Motorola F2265A User manual

ATU
HF-SSB Automatic Antenna Tuner
1.6-30 MHz, 125 W
Owner’s Manual
68P02948C35-A

ATU
HF-SSB Automatic Antenna Tuner
1.6-30 MHz, 125 W
Owner’s Manual
68P02948C35-A

i
ATU
HF-SSB Automatic Antenna Tuner
1.6-30 MHz, 125 W
TABLE OF CONTENTS
Para. Page
Performance Specifications.........................................................................................................................................iii
Model Complements .................................................................................................................................................... v
Accessories................................................................................................................................................................... v
CHAPTER 1 DESCRIPTION
1.1 GENERAL DESCRIPTION ........................................................................................................ 1-1
1.2 FUNCTIONAL DESCRIPTION.............................................................................................................1-1
CHAPTER 2 INSTALLATION
2.1 GENERAL ................................................................................................................................... 2-1
2.2 RECOMMENDED EQUIPMENT .............................................................................................. 2-1
2.2.1 Tools...........................................................................................................................................2-1
2.2.2 Accessories.................................................................................................................................2-1
2.3 MOBILE INSTALLATION INSTRUCTIONS .......................................................................... 2-1
2.3.1 Cable Kits ...................................................................................................................................2-1
2.3.2 Installation Instructions ..............................................................................................................2-1
2.3.3 Operational Check ......................................................................................................................2-3
2.4 BASE STATION INSTALLATION INSTRUCTIONS ............................................................. 2-4
2.4.1 Antenna Installation....................................................................................................................2-4
2.4.2 Antenna Ground Plane ...............................................................................................................2-5
2.4.3 ATU Installation Instructions .....................................................................................................2-6

ii
TABLE OF CONTENTS (Cont.)
Para. Page
CHAPTER 3 THEORY OF OPERATION
3.1 FUNCTIONAL DESCRIPTION.................................................................................................. 3-1
3.1.1 ATU Function ............................................................................................................................ 3-1
3.1.2 ATU Operation .......................................................................................................................... 3-1
3.2 BLOCK DIAGRAM DESCRIPTION .........................................................................................3-2
3.2.1 RF Matching Network................................................................................................................ 3-2
3.2.2 RF Sensor................................................................................................................................... 3-2
3.2.3 Tuner Logic................................................................................................................................ 3-2
3.2.4 Latches and Relay Drivers ......................................................................................................... 3-3
3.3 DETAILED CIRCUIT DESCRIPTIONS ....................................................................................3-3
3.3.1 RF Sensor Circuit....................................................................................................................... 3-3
3.3.2 RF Matching Network Circuit ................................................................................................... 3-4
3.3.3 Tuner Logic Circuit.................................................................................................................... 3-5
3.3.4 Latches And Relay Drivers Circuit ............................................................................................ 3-6

iii
PERFORMANCE SPECIFICATIONS
ELECTRICAL
Frequency Range 1.6-30 MHz
Input Power Capability 125 W (two-tone test method and a single tone transmission
for CW Morse code, both at a duty cycle of 1 minute
transmission/4 minutes reception)
Tuning Accuracy Automatically tunes to 50 Ωwith a nominal VSWR of 1.5
(maximum VSWR of 2) on any frequency in the
1.6-30 MHz range
Number of Memory Channels 4437
Tuning Time Typical: 0.5 seconds
Maximum: 3 seconds
From memory: less than 300 milliseconds
RF Tuning Power 5-7 W
Antennas For frequency range 1.6-30 MHz:
- 12 ft (3.7 m) to 16 ft (5 m) mobile whips
- 23 ft (7 m) to 35 ft (10.8 m) base station whips
- 23 ft (7 m) to 60 ft (18.2 m) long wire antennas
For frequency range 2-30 MHz:
- Same as for 1.6-30 MHz plus 8-12 ft (2.5-3.7 m) mobile
whips
Power Requirements 12 V dc nominal, 1.2 A, supplied through the RF coax
cable from the radio

iv
GENERAL
Environmental Conditions
Vibration MIL-STD-810D Method 514.3 and EIA RS152B
Shock MIL-STD-810D Method 516.3 and EIA RS152B
Sand & Dust MIL-STD-810D Method 510.2
Rain MIL-STD-810D Method 506.2
Salt Fog MIL-STD-810D Method 509.2
Operating Temperature -30ºC to +60ºC
Storage Temperature -40ºC to +85ºC
Humidity 90 to 95% @ 50ºC
Dimensions (H x W x L) 14.2" x 3.6 x 9" (36 cm x 9.1 cm x 22.9 cm)
Weight 5.5 lbs (2.5 kg)
Lead-in Length from Antenna to Tuner 1 ft max. (mobile installation)
Specifications subject to change without notice

v
MODEL COMPLEMENTS
Model F2265A
FLN2301 Mobile Automatic Antenna Tuner (ATU) 125 W
FHN5914 Housing
FLN8372 Antenna Tuner Board
FHN5760 ATU Assembly
FKN4314 High Voltage Cable Kit (for Use with Mobile Whips)
FKN4589A RF Coax Cable Kit, 17 feet
68P02948C35 ATU, HF-SSB Automatic Antenna Tuner Owner’s Manual
ACCESSORIES
FKN4612A RF Cable kit, 30 feet (N Type - UHF)
FKN4613A RF Cable Kit, 100 feet (N Type - UHF)
v/(vi Blank)