Nautel FM10 Owner's manual

e-mail: [email protected]
web: www.nautel.com
Nautel Maine Inc. Nautel Limited
201 Target Industrial Circle, Hackett’s Cove, RR #1 Tantallon,
Bangor, Maine USA 04401 Nova Scotia Canada B0J 3J0
Phone: [phone] Phone: [phone]
Fax: [phone] Fax: [phone]
ISO 9002 REGISTERED ISO 9001 REGISTERED
© Copyright 2002 NAUTEL. All rights reserved
TECHNICAL INSTRUCTIONS
FM10
FM BROADCAST TRANSMITTER
10 000 WATT
3-Phase AC Power
Original Issue.........................15 July 1997
Change 1 .....................15 November 1999
Change 2 ........................ 01 October 2002

10 000 WATT FM BROADCAST TRANSMITTER
FM10
Effective Pages (Page 1)
01 October 2002
LIST OF EFFECTIVE PAGES
The list of effective pages lists the status of all pages in this manual. Original pages are identified by a zero in the
Change No. column. Pages subsequently changed are identified by the date of the change number. On a changed
page, the text affected by the latest change is indicated by a vertical bar in the margin opposite the changed material.
Original ...........................................................15 July 1997
Change 1 .............................................. 15 November 1999
Change 2 .................................................. 01 October 2002
Total number of printed sides in this manual is 198 as listed below:
CHANGE CHANGE
PAGE No. DATE PAGE No. DATE
Title 2 01 October 2002
Title (Rear) - Blank
Effective (1) 2 01 October 2002
Effective (2) 2 01 October 2002
Effective (3) 2 01 October 2002
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Safety (1) 2 01 October 2002
Safety (2) 2 01 October 2002
Safety (3) 2 01 October 2002
Safety (4) 2 01 October 2002
Warranty (1) 2 01 October 2002
Warranty (2) 2 01 October 2002
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FM10
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01 October 2002
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10 000 WATT FM BROADCAST TRANSMITTER
FM10
Safety (Page 1)
01 October 2002
ARTIFICIAL RESPIRATION (MOUTH-TO-MOUTH)
(a) START MOUTH-TO-MOUTH BREATHING
IMMEDIATELY. SECONDS COUNT. Do not wait to
loosen clothing, warm the casualty, or apply stimulants.
(b) ASSESS RESPONSIVENESS OF CASUALTY. Do not
jar casualty or cause further physical injury (Figure 1)
(c) IF POSSIBLE, SEND A BYSTANDER TO GET
MEDICAL HELP. Do not leave casualty unattended
(Figure 2)
(d) CHECK CAROTID PULSE (Figure 3)
(e) LAY CASUALTY ON HIS/HER BACK and place any
available jacket or blanket under his/her shoulders.
(f) TILT THE HEAD BACK AND LIFT THE CHIN to open the
airway (Figure 4)
(g) PINCH CASUALTY’S NOSE AND EXHALE TWO SLOW
BREATHS INTO CASUALTY (Figure 5)
(h) REMOVE YOUR MOUTH and check for breathing
(Figure 6)
(i) CONTINUE GIVING ONE BREATH EVERY FIVE
SECONDS without interruption. If any air is retained in
the stomach after exhalation by casualty, press gently on
stomach to expel air.
(j) IF CHEST DOES NOT RISE CHECK for obstruction in
casualty’s mouth: clear foreign material using your finger,
tissues, etc. Use chin lift and recommence mouth-to-
mouth breathing.
(k) WHILE MOUTH-TO-MOUTH BREATHING IS
CONTINUED have someone else:
(a) Loosen casualty’s clothing.
(b) Keep the casualty warm.
(l) DON’T GIVE UP. Continue without interruption until the
casualty is revived, or until a doctor pronounces the
casualty dead. Four hours or more may be required.
(m) DO NOT PROVIDE ANYTHING ORALLY while victim is
unconscious.
1
2
3
4
5
6

10 000 WATT FM BROADCAST TRANSMITTER
FM10
Safety (Page 2)
01 October 2002
GENERAL RULES FOR TREATMENT FOR BURNS, BLEEDING, AND SHOCK
1. After casualty has revived, treat for injuries and shock.
2. Reassure casualty.
3. Try to make him comfortable.
4. Keep him reasonably warm but do not apply heat.
5. If thirsty, liquids may be given but no alcohol (no liquids should be given in cases of severe burns).
6. Treat burns or wounds. Infection danger in treating burns or wounds is very great so ensure hands are
clean and do not handle affected areas more than necessary.
7. Do not apply salves, grease, etc. to burns.
8. Do not remove burned clothing which adheres to the skin or break blisters.
9. Cover the burn with a dry sterile dressing, piece of sheeting, etc.
10. Bandage lightly over blisters where care must be taken to cover and not to break.
11. If severe bleeding of wound, elevate affected area, except in the case of a fracture.
12. Expose wound and apply pressure.
13. Apply dressing, pad and bandage.
14. For burns and bleeding, immobilize injured part using splints if necessary and keep patient in restful
position during removal to hospital or expert medical attention.
15. In all cases, send for medical aid immediately.

10 000 WATT FM BROADCAST TRANSMITTER
FM10
Safety (Page 3)
01 October 2002
ELECTRIC SHOCK - RESCUE METHODS
Electricity can damage the body in a number of ways. It may interfere with the proper functioning of the nervous
system and the heart action, it can subject the body to extreme heat and can cause severe muscular contractions.
The path that the current of electricity takes through the body is important. Currents which pass from hand to hand
or from hand to foot may pass directly through the heart and upset its normal functioning. This threat to life is
related to the amount of current or amperage that will flow through a victim's body. Very little current (as little as
10 milliamps) can result in severe shock or death.
Speed in the application of first aid measures is absolutely essential in cases of electrical injury. As soon as the
victim is freed safely from the source of the electrical current, if breathing has stopped, artificial respiration should
be commenced immediately. If the carotid pulse cannot be felt, external cardiac massage should be commenced
simultaneously. Resuscitation should be continued until the patient is breathing on his own or until medical aid
arrives. Survival rates can be quite high if cardio-pulmonary resuscitation is started within 3 to 4 minutes of the
injury being received.
ACT AT ONCE - DELAY OR INDECISION MAY BE FATAL
1. Turn OFF the electrical source.
2. Commence artificial respiration immediately.
3. Treat for burns, bleeding and shock.
REMOVING A CASUALTY FROM ELECTRICAL CONTACT
LOW VOLTAGE - 0 to 240 volts (household use)
Switch off the current, if possible and time permits. If the switch cannot be located immediately and the supply is
through a flexible cord or cable, the current may be shut off by removing the plug or even breaking the cable or
wrenching free. Never attempt to shut off current by cutting cord with a knife or scissors.
If the current cannot be shut off, the greatest care is necessary in removing the casualty. Household rubber gloves,
rubber or plastic hose (if there is no water in them), a dry unpainted stick or a clean dry rope can be used to free
victim.
HIGH VOLTAGE - 240 volts and up (industrial machines and power lines)
Do not touch any person or equipment in contact with a wire.
Use a dry unpainted pole, clean dry rope, dry rubber or plastic water hose to separate the casualty from the contact.
Keep as far away as possible.
Do not touch the casualty until he is free.

10 000 WATT FM BROADCAST TRANSMITTER
FM10
Safety (Page 4)
01 October 2002
TOXIC HAZARD WARNING
There are devices used in this equipment containing BERYLLIUM OXIDE ceramic, which is non-hazardous during
normal device operation and under normal device failure conditions. These devices are specifically identified in the
equipment manual’s parts list(s).
DO NOT cut, crush or grind devices because the resulting dust may be HAZARDOUS IF INHALED.
Unserviceable devices should be disposed of as harmful waste.

10 000 WATT FM BROADCAST TRANSMITTER
FM10
Warranty (Page 1)
01 October 2002
WARRANTY
Nautel Limited/Nautel Maine Incorporated, hereinafter referred to as Nautel, guarantees all mechanical and
electrical parts of the equipment for a period of thirteen months from date of shipment.
1. A "Part Failure" shall be deemed to have occurred when the part has become defective, or does not have the
characteristics required for the specified equipment performance:
(a) When the equipment is operated within the design parameters, and
(b) When the equipment is installed and adjusted according to Nautel's prescribed procedures as stated in
the instruction manual.
2. Nautel shall provide replacements for all "Parts" at no cost to the Customer when they become defective
during the warranty period, and upon the return of the defective part.
3. In the event that a "Part" fails during the warranty period and causes damage to a sub-assembly that cannot
be readily repaired in the field, the entire sub-assembly so damaged may be returned to Nautel for repair.
The repairs will be made without charge to the Customer.
4. Where warranty replacements or repair are provided under items 2 or 3, Nautel will pay that part of the
shipping costs incurred in returning the part/assembly to the Customer.
5. Warranty replacement parts and repair, which are provided under items 2 or 3, shall be guaranteed for a
period of ninety days from date of shipment or until the end of the original warranty period, whichever occurs
later.
6. Nautel will not assume responsibility for any charges incurred by other than Nautel employees.
7. Nautel shall have the privilege of investigating whether failures have been caused by factors beyond its
control.
8. Nautel shall in no event be liable for any consequential damages arising from the use of this equipment.
9. When requesting a warranty repair/replacement, please provide complete and accurate information. Observe
the instructions regarding 'Equipment Being Returned to Nautel' on page two of this warranty and provide the
information requested.
10. When ordering spare/replacement parts; please provide complete and accurate information. Refer to the parts
list of this manual for ordering information. Provide as much of the information requested for 'Equipment
Being Returned to Nautel' on page two of this warranty as is practical. The information identified by an
asterisk is the minimum required.
ON-LINE PART QUOTES
Nautel provides an on-line website service (www.nautel.com/in-service.html) where requests for part quotes may
be submitted. Requests will normally be responded to within one working day.

10 000 WATT FM BROADCAST TRANSMITTER
FM10
Warranty (Page 2)
01 October 2002
FACTORY SUPPORT
TECHNICAL ASSISTANCE
Nautel's field service department provides telephone technical assistance on a 24 hour, seven days a week basis.
Requests by other media (facsimile or e-mail) will be responded to the next working day if received after Nautel's
normal working hours. Contact the appropriate field service centre from the following:
U.S.A. customers use: Nautel Maine Incorporated Telephone [phone] (24 hours)
201 Target Industrial Circle Facsimile 207-947-3693
Bangor, Maine 04401
All other customers use: Nautel Limited Telephone [phone] (24 hours)
10089 Peggy's Cove Road Facsimile 902-823-3183
Hackett's Cove, Nova Scotia E-Mail [email protected]
Canada Web www.nautel.com
B3Z 3J4
MODULE EXCHANGE SERVICE
In order to provide Nautel customers with a fast and efficient service in the event of a problem, Nautel operates a
factory rebuilt, module exchange service which takes full advantage of the high degree of module redundancy in
Nautel equipment. This module exchange service is operated from Nautel’s factory in Bangor, Maine and
Hackett’s Cove, Nova Scotia. These two locations allow us to provide a quick turn around service to keep our
customers on the air. During the transmitter’s warranty period, up to thirteen months from shipment, repair and
exchange of modules is at no charge to the customer. When the warranty has expired, a charge of 80% of the
list price for all exchanged modules is made. If the faulty module is returned to Nautel within 30 days, a credit is
issued reducing this charge by one half to 40% of the list price. U.S.A. customers are required to contact our
Bangor, Maine facility. Canadian and overseas customers should contact our Nova Scotia, Canada facility.
EQUIPMENT BEING RETURNED TO NAUTEL
All equipment being returned to Nautel and all requests for repairs or replacements should be marked 'field
return' and addressed to the appropriate Nautel facility.
Complete and accurate information regarding the equipment being returned will ensure prompt attention and will
expedite the dispatch of replacements. Refer to the nameplate on the transmitter and/or the appropriate
module/assembly to obtain name, type, part and serial number information. Refer to the parts list of this manual
or the appropriate service instruction manual for additional ordering information.
The following information should accompany each request:
*Model of Equipment
*Serial number of Equipment
*Name of Part/Assembly
Serial number of Part/Assembly
*Complete reference designation of Part/Assembly
*Nautel's part number of Part/Assembly
*OEM's part number of Part/Assembly
Number of hours in Use
Nature of defect
*Return shipping address
* Denotes minimum information required to order spare/replacement parts

10 000 WATT FM BROADCAST TRANSMITTER
FM10
Contents (Page 1)
15 November 1999
TABLE OF CONTENTS
Section Page
1GENERAL INFORMATION
1.1 INTRODUCTION ........................................................................................................ 1-1
1.2 FACTORY SUPPORT ................................................................................................ 1-1
1.3 PURPOSE AND SCOPE OF MANUAL....................................................................... 1-1
1.3.1 FAMILY TREE ............................................................................................................ 1-1
1.4 PURPOSE OF EQUIPMENT ...................................................................................... 1-1
1.5 MECHANICAL DESCRIPTION................................................................................... 1-1
1.6 TECHNICAL SUMMARY............................................................................................ 1-1
1.7 SPECIAL TOOLS AND TEST EQUIPMENT .............................................................. 1-1
1.8 GLOSSARY OF TERMS ............................................................................................ 1-1
2UNPACKING AND INSTALLATION
2.1 PLANNING AND SITE PREPARATION ..................................................................... 2-1
2.1.1 TRANSMITTER ROOM REQUIREMENTS ................................................................. 2-1
2.1.1.1 Transmitter Dimensions........................................................................................ 2-1
2.1.1.2 Transmitter Clearances......................................................................................... 2-1
2.1.1.3 Air Flushing........................................................................................................... 2-1
2.1.1.4 Cooling................................................................................................................. 2-1
2.1.1.5 Heating................................................................................................................. 2-1
2.1.1.6 Work Area ............................................................................................................ 2-1
2.1.2 LIGHTNING PROTECTION........................................................................................ 2-2
2.1.2.1 Station Reference Ground .................................................................................... 2-2
2.1.2.2 AC Power Source ................................................................................................. 2-2
2.1.2.3 Antenna Feed Cable............................................................................................. 2-2
2.1.2.4 Antenna Tower...................................................................................................... 2-2
2.1.2.5 External Control/Monitor Wiring............................................................................ 2-2
2.1.3 ELECTRICAL POWER ............................................................................................... 2-2
2.1.3.1 Nominal Voltage ................................................................................................... 2-2
2.1.3.2 Voltage Stability.................................................................................................... 2-2
2.1.3.3 Power Consumption.............................................................................................. 2-3
2.1.3.4 External Switching................................................................................................ 2-3
2.1.4 ANTENNA SYSTEM................................................................................................... 2-3
2.1.4.1 RF Feed Cable ..................................................................................................... 2-3
2.1.5 RF DRIVE SOURCE................................................................................................... 2-3
2.1.6 SAFETY INTERLOCK................................................................................................. 2-3
2.1.7 REMOTE CONTROL CIRCUITS................................................................................. 2-3
2.1.7.1 RF On Control ...................................................................................................... 2-3
2.1.7.2 RF Off Control...................................................................................................... 2-3
2.1.7.3 Protection Reset ................................................................................................... 2-4
2.1.7.4 Power Increase..................................................................................................... 2-4
2.1.7.5 Power Decrease.................................................................................................... 2-4
2.1.7.6 Low Power Select ................................................................................................. 2-4
2.1.8 EXCITER INTERLOCK............................................................................................... 2-4
2.1.9 RF PERFORMANCE MONITORING........................................................................... 2-4
2.1.9.1 Forward Power Level............................................................................................ 2-4
2.1.9.2 Reflected Power Level.......................................................................................... 2-4
2.1.9.3 RF Output Sample................................................................................................ 2-4
2.1.9.4 Exciter Power Sample........................................................................................... 2-5

10 000 WATT FM BROADCAST TRANSMITTER
FM10
Contents (Page 2)
15 November 1999
TABLE OF CONTENTS (Continued)
Section Page
2UNPACKING AND INSTALLATION (Continued)
2.1.9.5 DC Input Current Level......................................................................................... 2-5
2.1.9.6 DC Input Voltage Level......................................................................................... 2-5
2.1.10 REMOTE ALARM INDICATIONS................................................................................ 2-5
2.1.10.1 IPA/RF Fail Alarm................................................................................................. 2-5
2.1.10.2 PA/Module Fail Alarm........................................................................................... 2-5
2.1.10.3 High Reflected Power Alarm................................................................................. 2-5
2.1.10.4 AC Power Alarm................................................................................................... 2-6
2.1.10.5 High Temperature Alarm....................................................................................... 2-6
2.1.10.6 PA Volts/Combiner Alarm..................................................................................... 2-6
2.1.10.7 Interlock Open Alarm............................................................................................ 2-6
2.1.10.8 Fan Fail Alarm...................................................................................................... 2-6
2.1.10.9 Low Battery Alarm ................................................................................................ 2-6
2.1.11 REMOTE STATUS INDICATIONS.............................................................................. 2-6
2.1.11.1 Remote Status...................................................................................................... 2-6
2.1.11.2 RF On Status........................................................................................................ 2-7
2.1.11.3 Transmitter Ready Status ..................................................................................... 2-7
2.1.12 PARTS SUPPLIED BY NAUTEL................................................................................. 2-7
2.1.12.1 Parts Removed During Disassembly for Shipment................................................ 2-7
2.1.12.2 Ancillary Parts....................................................................................................... 2-7
2.1.13 PARTS REQUIRED BUT NOT SUPPLIED BY NAUTEL............................................. 2-7
2.1.13.1 Surge Protector Panel........................................................................................... 2-7
2.1.14 TEST EQUIPMENT AND SPECIAL TOOLS ............................................................... 2-7
2.2 NON-TECHNICAL PRE-COMMISSIONING................................................................ 2-8
2.2.1 ACCEPTANCE OF SHIPMENT .................................................................................. 2-8
2.2.2 UNPACKING INSTRUCTIONS ................................................................................... 2-8
2.2.3 ASSEMBLY/INSTALLATION....................................................................................... 2-8
2.2.4 INSTALLATION OF EXTERNAL CONTROL/MONITOR WIRING............................... 2-8
2.2.5 INSTALLATION OF AC POWER SUPPLY ASSEMBLY.............................................. 2-9
2.2.6 INSTALLATION OF AC POWER SOURCE WIRING................................................ 2-10
2.2.7 IPA/RF POWER MODULE INSTALLATION.............................................................. 2-11
2.2.8 EXCITER INSTALLATION ........................................................................................ 2-13
2.2.8.1 Internally Mounted Nautel Exciter ....................................................................... 2-13
2.2.8.2 Externally Mounted Exciter................................................................................. 2-13
2.2.9 RF OUTPUT ACCESS.............................................................................................. 2-14
2.2.10 INSTALLATION OF RF FEED CABLE...................................................................... 2-14
2.2.10.1 Connection of RF Feed Cable............................................................................. 2-14
2.2.11 REFERENCE GROUND INTERCONNECTION ........................................................ 2-14
2.3 TECHNICAL PRE-COMMISSIONING....................................................................... 2-16
2.3.1 SELECTING PWR TRANSFORMER'S PRIMARY WINDING TAPS ......................... 2-16
2.3.2 SELECTING EXCITER INTERLOCK CONNECTIONS.............................................. 2-16
2.3.3 LOAD RESISTANCE CHECK FOR B+ VOLTAGE POWER SUPPLY....................... 2-16
2.3.4 CONTROL/MONITOR BATTERY ............................................................................. 2-16
2.3.5 REMOVAL OF METER SHORTING CLIPS .............................................................. 2-17

10 000 WATT FM BROADCAST TRANSMITTER
FM10
Contents (Page 3)
15 November 1999
TABLE OF CONTENTS (Continued)
Section Page
3CONTROLS AND INDICATORS
3.1 GENERAL .................................................................................................................. 3-1
3.2 AC/DC POWER SUPPLY CONTROLS AND INDICATORS ....................................... 3-1
3.3 CONTROL/MONITOR FUNCTIONS CONTROLS AND INDICATORS....................... 3-1
3.4 RF POWER STAGE CONTROLS AND INDICATORS ............................................... 3-1
3.5 RF POWER MODULE CONTROL AND INDICATORS............................................... 3-1
3.6 IPA MODULE CONTROL AND INDICATORS............................................................ 3-1
4COMMISSIONING/OPERATION INSTRUCTIONS
4.1 GENERAL .................................................................................................................. 4-1
4.2 CONTROLS AND INDICATORS ................................................................................ 4-1
4.3 EMERGENCY SHUTDOWN PROCEDURE................................................................ 4-1
4.3.1 TURN-OFF OF RF OUTPUT ...................................................................................... 4-1
4.3.2COMPLETE SHUTDOWN .......................................................................................... 4-1
4.4 PRE-STARTUP CHECKS........................................................................................... 4-1
4.5 TURNING ON THE TRANSMITTER........................................................................... 4-2
4.6 POWER AMPLIFIER MODULE CIRCUIT BREAKER SETTINGS.............................. 4-2
4.7 OPERATING PRECAUTIONS.................................................................................... 4-2
4.8 READING FORWARD/REFLECTED POWER METER............................................... 4-2
4.9 REMOTE OPERATION .............................................................................................. 4-2
4.10 COMMISSIONING PROCEDURES ............................................................................ 4-3
4.10.1 CONTROL/MONITOR BACKUP BATTERY INSTALLATION...................................... 4-3
4.10.2 EXCITER SETUP........................................................................................................ 4-3
4.10.3 PRELIMINARY SETTINGS......................................................................................... 4-4
4.10.4 INITIAL TURN-ON ...................................................................................................... 4-4
4.10.4.1 Low Voltage DC Power Supplies........................................................................... 4-4
4.10.4.2 Enabling of RF Power Circuits .............................................................................. 4-5
4.10.4.3 Intermediate RF Power Check .............................................................................. 4-5
4.10.4.4 Check of RF Power Stages................................................................................... 4-5
4.10.5 PUTTING TRANSMITTER IN SERVICE..................................................................... 4-7
5SYSTEM LEVEL TROUBLE SHOOTING
5.1 GENERAL .................................................................................................................. 5-1
5.2 SCHEDULED MAINTENANCE................................................................................... 5-1
5.3 CORRECTIVE MAINTENANCE.................................................................................. 5-1
5.3.1 ON-AIR TROUBLE SHOOTING.................................................................................. 5-1
5.3.1.1 Remote Trouble Shooting..................................................................................... 5-1
5.3.1.2 Local Trouble Shooting......................................................................................... 5-2
5.3.2 OFF-AIR TROUBLE SHOOTING................................................................................ 5-2
5.4 ELECTROSTATIC PROTECTION.............................................................................. 5-2
5.4.1 PERSONAL DISCHARGING....................................................................................... 5-2
5.4.2 HANDLING/STORAGE............................................................................................... 5-2
5.4.3 TOOLS/TEST EQUIPMENT........................................................................................ 5-2
5.4.4 STRESS CURRENT PROTECTION ........................................................................... 5-3
5.5 OPERATION WITH DEFECTIVE/MISSING RF POWER AMPLIFIER MODULES...... 5-3
5.6 RF POWER AMPLIFIER MODULE/IPA MODULE FAULT ISOLATION..................... 5-4
5.6.1 POWER AMPLIFIER TROUBLE SHOOTING............................................................. 5-5

10 000 WATT FM BROADCAST TRANSMITTER
FM10
Contents (Page 4)
15 November 1999
TABLE OF CONTENTS (Continued)
Section Page
5SYSTEM LEVEL TROUBLE SHOOTING (Continued)
5.7 REPLACEMENT OF RF POWER MODULE............................................................... 5-6
5.7.1 RF POWER MODULE REMOVAL.............................................................................. 5-6
5.7.2 RF POWER AMPLIFIER TUNING .............................................................................. 5-7
5.7.2.1 Test Equipment For Tuning................................................................................... 5-8
5.7.2.2 Preparation For Tuning......................................................................................... 5-8
5.7.2.3 Tuning Procedure ............................................................................................... 5-10
5.7.2.4 Completion of Tuning.......................................................................................... 5-12
5.7.3 RF POWER AMPLIFIER MODULE INSTALLATION................................................. 5-12
5.8 TEMPORARY REPLACEMENT OF IPA MODULE WITH RF POWER MODULE..... 5-13
5.8.1 RF POWER MODULE REMOVAL............................................................................ 5-13
5.8.2 IPA MODULE REMOVAL.......................................................................................... 5-13
5.8.3 IPA REPLACEMENT/RF POWER MODULE INSTALLATION................................... 5-14
5.9 CONTROL/MONITOR PWB REPLACEMENT/ADJUSTMENT................................. 5-15
5.10 POWER SUPPLY CONTROL PWB REPLACEMENT.............................................. 5-16
5.11 TROUBLE SHOOTING FRONT PANEL ALARMS................................................... 5-19
5.11.1 PA FAIL ALARM....................................................................................................... 5-19
5.11.2 MODULE RF DRIVE ALARM.................................................................................... 5-19
5.11.3 MODULE TEMP ALARM........................................................................................... 5-20
5.11.4 AC PHASE ALARM................................................................................................... 5-21
5.11.5 HIGH AC PWR ALARM ............................................................................................ 5-21
5.11.6 LOW AC PWR ALARM............................................................................................. 5-22
5.11.7 REFLECTED POWER ALARM................................................................................. 5-22
5.11.7.1 Reflected and Forward Power Zero Watts........................................................... 5-22
5.11.7.2 Reflected Power Zero Watts and Forward Power Normal.................................... 5-23
5.11.7.3 Reflected Power Between 100 and 440 Watts..................................................... 5-23
5.11.8 IPA INPUT ALARM................................................................................................... 5-24
5.11.8.1 Exciter ALC Check.............................................................................................. 5-24
5.11.8.2 Cables/Connections............................................................................................ 5-24
5.11.8.3 RF Drive Checks................................................................................................. 5-24
5.11.9 IPA OUTPUT ALARM............................................................................................... 5-25
5.11.9.1 IPA Module Low Supply Voltage Check .............................................................. 5-25
5.11.9.2 IPA Module Replacement ................................................................................... 5-25
5.11.9.3 Control/Monitor PWB IPA Output Monitor Check ................................................ 5-25
5.11.10 IPA SWR ALARM ..................................................................................................... 5-25
5.11.10.1 IPA Reflected Power........................................................................................... 5-25
5.11.10.2 IPA Forward Power............................................................................................. 5-26
5.11.11 IPA TEMP ALARM.................................................................................................... 5-26
5.11.12 PA VDC FAIL PWR SPLY (A thru F) ALARM............................................................ 5-27
5.11.12.1 Low Supply Output.............................................................................................. 5-27
5.11.12.2 High Supply Output/High Supply Temp............................................................... 5-27
5.11.13 PWR SPLY FAIL IPA ALARM................................................................................... 5-28
5.11.13.1 Low IPA Supply Output................................................................................. 5-28
5.11.13.2 High IPA Supply Output...................................................................................... 5-28
5.11.14 FAN FAIL ALARM..................................................................................................... 5-28
5.11.15 RECTIFIER TEMPERATURE ALARM ...................................................................... 5-29
5.12 AIR FILTERS............................................................................................................ 5-29
5.13 BACKUP BATTERY................................................................................................. 5-29
5.14 REPLACEMENT OF COAXIAL CABLES................................................................. 5-29

10 000 WATT FM BROADCAST TRANSMITTER
FM10
Contents (Page 5)
15 November 1999
TABLE OF CONTENTS (Continued)
Section Page
6THEORY OF OPERATION
6.1 GENERAL .................................................................................................................. 6-1
6.2 TRANSMITTER DESCRIPTION................................................................................. 6-1
6.3 AC/DC POWER SUPPLY........................................................................................... 6-1
6.3.1 POWER TRANSFORMER (A1T1).............................................................................. 6-1
6.3.2 THREE-PHASE RECTIFIER ASSEMBLIES (A2, A3).................................................. 6-1
6.3.3 CIRCUIT BREAKER PANEL....................................................................................... 6-2
6.3.4 LOW VOLTAGE POWER SUPPLY ASSEMBLY (A26)............................................... 6-2
6.3.4.1 Low Voltage Power Supply PWB (A26A1)............................................................. 6-2
6.3.4.1.1 -15V Regulator ............................................................................................... 6-2
6.3.4.1.2 +24V Fan Supply............................................................................................ 6-2
6.3.4.1.3 +15V Regulator .............................................................................................. 6-2
6.3.4.1.4 +5V Regulator ................................................................................................ 6-2
6.3.4.2 3-Phase Monitor PWB .......................................................................................... 6-3
6.3.5 COOLING FANS......................................................................................................... 6-3
6.3.6 SWITCHING POWER SUPPLY (A THRU F AND IPA) ............................................... 6-3
6.3.7 POWER SUPPLY CONTROL PWB (A5A1)................................................................ 6-4
6.3.7.1 PA Volts Control ................................................................................................... 6-4
6.3.7.2 IPA Volts Control .................................................................................................. 6-4
6.3.7.3 Charging Relay Control......................................................................................... 6-4
6.3.7.4 PA Volts Monitor................................................................................................... 6-5
6.3.7.4.1 High PA Volts................................................................................................. 6-5
6.3.7.4.2 Low PA Volts.................................................................................................. 6-5
6.3.7.5 IPA Volts Monitor.................................................................................................. 6-5
6.3.7.5.1 High IPA Volts................................................................................................ 6-5
6.3.7.5.2 Low IPA Volts................................................................................................. 6-5
6.3.7.6 Temperature Monitors........................................................................................... 6-5
6.3.7.6.1 Switching Power Supplies............................................................................... 6-5
6.3.7.6.2 3-Phase Rectifier Assemblies......................................................................... 6-6
6.3.7.7 Fan Failure Detection............................................................................................ 6-6
6.3.7.8 Switching Power Supply Module Inhibit................................................................. 6-6
6.3.7.9 Alarm Reset.......................................................................................................... 6-6
6.4 RF POWER STAGE ................................................................................................... 6-6
6.4.1 IPA INPUT POWER PROBE ...................................................................................... 6-6
6.4.2 INTERMEDIATE POWER AMPLIFIER (IPA) MODULE .............................................. 6-6
6.4.3 INTERMEDIATE RF DRIVE SPLITTER...................................................................... 6-6
6.4.3.1 IPA Combiner....................................................................................................... 6-6
6.4.3.2 IPA Output Splitter................................................................................................ 6-7
6.4.3.3 IPA SWR Probe.................................................................................................... 6-7
6.4.4 RF POWER MODULE ................................................................................................ 6-7
6.4.5 RF COMBINER/FINAL FILTER................................................................................... 6-7
6.4.6 RF POWER PROBE................................................................................................... 6-7
6.5 CONTROL/MONITOR FUNCTION............................................................................. 6-8
6.5.1 CONTROL/DISPLAY PWB ......................................................................................... 6-8
6.5.2 CONTROL/MONITOR PWB ....................................................................................... 6-8
6.5.2.1 External Inputs...................................................................................................... 6-8
6.5.2.2 External Outputs................................................................................................... 6-8
6.5.2.3 Local/Remote Control Selection............................................................................ 6-9

10 000 WATT FM BROADCAST TRANSMITTER
FM10
Contents (Page 6)
15 November 1999
TABLE OF CONTENTS (Continued)
Section Page
6THEORY OF OPERATION (Continued)
6.5.2.4 RF On/Off Control................................................................................................. 6-9
6.5.2.5 Transmitter Interlock............................................................................................. 6-9
6.5.2.6 Transmitter Output Power Level Adjustment......................................................... 6-9
6.5.2.7 Automatic Level Control (ALC)............................................................................ 6-10
6.5.2.8 Alarm Reset........................................................................................................ 6-10
6.5.2.9 Protection Reset ................................................................................................. 6-10
6.5.2.10 Module Inhibit Reset..................................................................................... 6-10
6.5.2.11 High RF Power Module Temperature............................................................ 6-10
6.5.2.12 High IPA Temperature.................................................................................. 6-10
6.5.2.13 Low RF Power Module RF Drive................................................................... 6-10
6.5.2.14 PA Fail Alarm............................................................................................... 6-11
6.5.2.15 Low IPA Module Input................................................................................... 6-11
6.5.2.16 High IPA Module Input.................................................................................. 6-11
6.5.2.17 Low IPA Module Output................................................................................ 6-11
6.5.2.18 High IPA Module Output............................................................................... 6-11
6.5.2.19 High IPA Reflected Power ............................................................................ 6-11
6.5.2.20 Low Transmitter Forward Power ................................................................... 6-11
6.5.2.21 Transmitter Reflected Power ........................................................................ 6-12
6.5.2.21.1 Refld Pwr Less Than 100 Watts.......................................................................... 6-12
6.5.2.21.2 Refld Pwr Greater Than 440 Watts ..................................................................... 6-12
6.5.2.21.3 Refld Pwr Greater Than 1200 Watts ................................................................... 6-12
6.5.2.22 High AC Power............................................................................................. 6-12
6.5.2.23 Low AC Power.............................................................................................. 6-12
6.5.2.24 AC Phase Failure ......................................................................................... 6-12
6.5.2.25 Battery Backup............................................................................................. 6-12
7COMPONENT LEVEL TROUBLE SHOOTING
7.1 TROUBLE SHOOTING REFERENCE DATA ............................................................. 7-1
7.2 AC/DC POWER SUPPLY........................................................................................... 7-1
7.2.1 SWITCHING POWER SUPPLIES............................................................................... 7-1
7.2.2 POWER SUPPLY CONTROL PWB............................................................................ 7-1
7.2.3 LOW VOLTAGE POWER SUPPLY PWB................................................................... 7-1
7.2.4 3-PHASE MONITOR PWB.......................................................................................... 7-1
7.3 RF POWER STAGE ................................................................................................... 7-1
7.3.1 RF POWER MODULES.............................................................................................. 7-1
7.3.2 INTERMEDIATE POWER AMPLIFIER MODULE ....................................................... 7-1
7.4 CONTROL/MONITOR FUNCTION............................................................................. 7-1
7.4.1 CONTROL/MONITOR PWB ....................................................................................... 7-1
8PARTS LIST
8.1 INTRODUCTION ........................................................................................................ 8-1
8.2 FAMILY TREE............................................................................................................ 8-1
8.3 MANUFACTURER'S INDEX....................................................................................... 8-1
8.4 HOW TO LOCATE INFORMATION FOR A SPECIFIC PART.................................... 8-1
8.4.1 WHEN NAUTEL CONFIGURATION CONTROL NUMBER IS KNOWN...................... 8-1

10 000 WATT FM BROADCAST TRANSMITTER
FM10
Contents (Page 7)
15 November 1999
TABLE OF CONTENTS (Continued)
Section Page
8PARTS LIST (Continued)
8.4.2 WHEN REF DES IS KNOWN ..................................................................................... 8-1
8.5 REFERENCE DESIGNATION INDEXES.................................................................... 8-1
8.6 COLUMN CONTENT EXPLANATION........................................................................ 8-1
8.6.1 USE CODE COLUMN................................................................................................. 8-1
8.6.2 REF DES COLUMN.................................................................................................... 8-2
8.6.3 NAME OF PART AND DESCRIPTION COLUMN........................................................ 8-2
8.6.4 NAUTEL'S PART NO. COLUMN................................................................................. 8-2
8.6.5 JAN/MIL/OEM PART NO. COLUMN........................................................................... 8-2
8.6.6 X/Y GRID COLUMN.................................................................................................... 8-2
8.6.7 OEM CODE COLUMN................................................................................................ 8-2
8.7 COMMON ABBREVIATIONS/ACRONYMS................................................................ 8-2
9WIRING LIST
9.1 INTRODUCTION ........................................................................................................ 9-1
9.2 WIRING LISTS NOT PROVIDED ............................................................................... 9-1
9.3 PRINTED WIRING PATTERNS.................................................................................. 9-1
9.4 WIRE COLORS.......................................................................................................... 9-1
9.5 WIRING LIST PROVIDED .......................................................................................... 9-1
10 ELECTRICAL SCHEMATICS
10.1 INTRODUCTION ...................................................................................................... 10-1
10.2 COMPONENT VALUES ........................................................................................... 10-1
10.3 GRAPHIC SYMBOLS............................................................................................... 10-1
10.4 LOGIC SYMBOLS.................................................................................................... 10-1
10.5 REFERENCE DESIGNATIONS................................................................................ 10-1
10.6 UNIQUE SYMBOLOGY............................................................................................ 10-1
10.6.2 LOGIC LEVEL/CONVENTION.................................................................................. 10-1
10.7 IDENTIFICATION OF SCHEMATIC DIAGRAMS...................................................... 10-1
10.8 STRUCTURE OF SCHEMATICS.............................................................................. 10-1
10.9 LOCATING THE SCHEMATIC DIAGRAM(S) FOR A FUNCTIONAL BLOCK.......... 10-2
10.9.1 WHEN FIGURE NUMBER IDENTIFIED.................................................................... 10-2
10.9.2 WHEN REFERENCE DESIGNATION ASSIGNED TO BLOCK................................. 10-2
10.9.3 TITLE OF BLOCK..................................................................................................... 10-2
10.10 LOCATING A PART/ASSEMBLY IDENTIFIED ON A SCHEMATIC......................... 10-2
11 MECHANICAL DRAWINGS
11.1 INTRODUCTION ...................................................................................................... 11-1
11.2 LOCATING ASSEMBLY DETAIL DRAWINGS......................................................... 11-1
11.3 CONTENT OF MECHANICAL DRAWINGS.............................................................. 11-1
11.4 X/Y CO-ORDINATES ON PWB DRAWINGS............................................................ 11-1

10 000 WATT FM BROADCAST TRANSMITTER
FM10
Contents (Page 8)
15 November 1999
LIST OF ILLUSTRATIONS
Number Title Page
1-1 FM10 - 10 000 Watt Fm Broadcast Transmitter....................................................................... 1-5
2-1 External Input/Output Interface.............................................................................................. 2-15
5-1 Test Interconnection for RF Power Module to be Tuned........................................................... 5-9
5-2 Tuning Shelf Installation ........................................................................................................ 5-30
7-1 FET Gate Drive....................................................................................................................... 7-2
7-2 PA Volts Sample ..................................................................................................................... 7-2
7-3 Switching FET Assy Output ..................................................................................................... 7-2
7-4 100kHz Oscillator Waveform................................................................................................... 7-5
7-5 50kHz Square Wave Waveform.............................................................................................. 7-5
7-6 50kHz Ramp Waveform.......................................................................................................... 7-5
7-7 TP17 Waveform...................................................................................................................... 7-5
7-8 TP18 Waveform...................................................................................................................... 7-6
7-9 TP19 Waveform...................................................................................................................... 7-6
7-10 CR21 - Cathode Waveform ..................................................................................................... 7-6
7-11 CR30/31/32/33/137/138 - Anode Waveform ............................................................................ 7-6
8-1 Family Tree - FM10 10kW FM Broadcast Transmitter.............................................................. 8-6
SD-1 Electrical Schematic - FM10 FM Broadcast Transmitter Overview........................................ SD-1
SD-2 Electrical Schematic - AC/DC Power Supply (Sheet 1 of 2) .................................................. SD-2
SD-3 Electrical Schematic - AC/DC Power Supply (Sheet 2 of 2) .................................................. SD-3
SD-4 Electrical Schematic - Low Voltage Power Supply PWB (NAPS09C/01)............................... SD-4
SD-5 Electrical Schematic - 3-Phase Monitor PWB (NAPC60/03).................................................. SD-5
SD-6 Electrical Schematic - RF Power Stage (Sheet 1 of 2).......................................................... SD-6
SD-7 Electrical Schematic - RF Power Stage (Sheet 2 of 2).......................................................... SD-7
SD-8 Electrical Schematic - RF Combiner/Final Filter (NAF79) ..................................................... SD-8
SD-9 Electrical Schematic - Control/Monitor Function.................................................................... SD-9
SD-10 Electrical Schematic - Control/Display PWB (NAPD05/01A)............................................... SD-10
MD-1 Assembly Detail - FM10 FM Broadcast Transmitter - Front View ..........................................MD-1
MD-2 Assembly Detail - FM10 FM Broadcast Transmitter - Rear View...........................................MD-2
MD-3 Assembly Detail - NASR92/02 and /03 AC Power Supply Assemblies...................................MD-3
MD-4 Assembly Detail - 3-Phase Rectifier Assembly (182-7150 and 182-7150-01) ........................MD-4
MD-5 Assembly Detail - NAG02/01 & NAG02/02 Circuit Breaker Panel Assembly..........................MD-5
MD-6 Assembly Detail - NAC76 Power Supply Control Panel.........................................................MD-6
MD-7 Assembly Detail - NAC66/01A or NAC66/03 Control/Monitor Panel ......................................MD-7
MD-8 Assembly Detail - NAPD05/01A Control/Display PWB..........................................................MD-8
MD-9 Assembly Detail - NAI07 Intermediate RF Drive Splitter .......................................................MD-9
MD-10 Assembly Detail - NAFP68 IPA Input Power Probe.............................................................MD-10
MD-11 Assembly Detail - NAF79 RF Combiner/Filter and NAFP64 RF Power Probe .....................MD-11
MD-12A Assembly Detail - NAS43/02 Low Voltage Power Supply..................................................MD-12A
MD-12B Assembly Detail - NAS43/02A Low Voltage Power Supply................................................MD-12B
MD-13 Assembly Detail - NAPS09C/01 Low Voltage Power Supply PWB......................................MD-13
MD-14 Assembly Detail - NAPC60-03 3-Phase Monitor PWB ........................................................MD-14
MD-15 Dimensional Information - FM10 10 000 Watt FM Broadcast Transmitter ...........................MD-15

10 000 WATT FM BROADCAST TRANSMITTER
FM10
Contents (Page 9)
15 November 1999
LIST OF TABLES
Number Title Page
1-1 Technical Summary................................................................................................................. 1-2
1-2 Test Equipment ....................................................................................................................... 1-4
1-3 Special Tools........................................................................................................................... 1-6
1-4 Glossary of Terms................................................................................................................... 1-6
2-1 Power Transformer Wire Connections ................................................................................... 2-10
2-2 Three-phase AC Power Connection....................................................................................... 2-11
2-3 Module Connector Mating Information................................................................................... 2-12
2-4 Primary Winding Tap Selection for Three-Phase Power Transformer A1T1........................... 2-17
3-1 Ac/Dc Power Supply Controls and Indicators ........................................................................... 3-2
3-2 Control/Monitor Function Controls and Indicators................................................................... 3-11
3-3 RF Power Stage Controls and Indicators................................................................................ 3-17
3-4 RF Power Module Control and Indicators............................................................................... 3-18
3-5 IPA Module Controls and Indicators....................................................................................... 3-20
5-1 PA Failures Versus RF Output................................................................................................. 5-3
5-2 Fuse Versus Power Amplifier FET........................................................................................... 5-4
5-3 Power Module Mating Connectors ........................................................................................... 5-7
5-4 Component Association for Tuning........................................................................................ 5-11
5-5 Fault Analysis - No RF Output or Reduced RF Output........................................................... 5-17
5-6 Factory Determined Measurements for Critical Parameters................................................... 5-28
7-1 Test Voltages/Waveforms - Switching Power Supply............................................................... 7-2
7-2 Test Voltages/Waveforms - Power Supply Control PWB ......................................................... 7-3
7-3 Test Voltages - Low Voltage Power Supply PWB..................................................................... 7-4
7-4 Test Voltages - 3 Phase Monitor PWB..................................................................................... 7-4
7-5 Test Voltages - Control/Monitor PWB ...................................................................................... 7-7
8-1 Manufacturers' Code to Address Index..................................................................................... 8-3
8-2 Ref Des Index - FM10 10kW FM Broadcast Transmitter.......................................................... 8-8
8-3 Ref Des Index - NASR92 Ac/Dc Power Supply...................................................................... 8-13
8-4 Ref Des Index - NAG02 Circuit Breaker Panel....................................................................... 8-14
8-5 Ref Des Index - NAC66 Control/Monitor Panel ...................................................................... 8-15
8-6 Ref Des Index - NAPD05/01A Control/Display PWB.............................................................. 8-16
8-7 Ref Des Index - NAI07 Intermediate RF Drive Splitter ........................................................... 8-19
8-8 Ref Des Index - NAFP68 IPA Input Power Probe................................................................... 8-20
8-9 Ref Des Index - NAF79 10kW RF Combiner/Filter................................................................. 8-21
8-10 Ref Des Index - NAFP64 10kW RF Power Probe................................................................... 8-22
8-11 Ref Des Index - NAS43/02 Low Voltage Power Supply.......................................................... 8-23
8-12 Ref Des Index - NAPS09C/01 Low Voltage Power Supply PWB............................................ 8-24
8-13 Ref Des Index - NAPC60/03 3-Phase Monitor PWB .............................................................. 8-27

10 000 WATT FM BROADCAST TRANSMITTER
FM10
Contents (Page 10)
15 November 1999
LIST OF TABLES (Continued)
Number Title Page
9-1 Wiring Lists Provided............................................................................................................... 9-1
9-2 Wiring List - 10 000 Watt FM Broadcast Transmitter................................................................ 9-2
9-3 Wiring List - NASR92/02 and NASR92/03 AC Power Supplies................................................. 9-8
9-4 Wiring List - NAC66/01A or NAC66/03 Control/Monitor Panel.................................................. 9-9
9-5 Wiring List - NAS43/02 Low Voltage Power Supply................................................................ 9-10
9-6 Wiring List - Fan Plate Assembly (182-7130)......................................................................... 9-11
9-6A Wiring List - Fan Panel Assembly.......................................................................................... 9-12
9-7 Wiring List - Connector Mating Information - Sorted by Floating Connector ........................... 9-14
9-8 Wiring List - Connector Mating Information - Sorted by Fixed Connector............................... 9-18
10-1 List of Electrical Schematics.................................................................................................. 10-3
11-1 List of Mechanical Drawings .................................................................................................. 11-1