Wulfsberg Electronics COBHAM RMS-555 Manual

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REVISION HISTORY
Refer to the DCA and associated markups for a complete description of
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REV
DCA
DATE
DRAWN
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APPROVED
PUBLISHED
A
W1176
06/06/2001
-----
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--------
06/06/2001
B
W17973
05/01/18
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TEMPLATE 150-744545-01 REV. E
Chelton Avionics, Inc.
dba Wulfsberg Electronics Division
Prescott, AZ
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DOCUMENT TITLE
PILOTS GUIDE, RMS 555 WITH ANTI-
JAMMING FEATURE
SIZE
A
LRU
RMS555
DOCUMENT NUMBER
150-040808
REV
B
Typed signatures indicate approval. Handwritten signature approval of
this document is on file at Wulfsberg Electronics, Prescott, Arizona.
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Digitally signed by: James Sneed
DN: CN = James Sneed C = US O = Cobham
OU = Cobham Aerospace Communications
Date: 2018.05.10 09:30:47 -06'00'
George Story
2018.05.09 14:10:52
-07'00'
Digitally signed by David Urban
Date: 2018.05.10 16:07:33
-07'00'
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COBHAM RESTRICTED
RMS-555 RADIO MANAGEMENT SYSTEM
WITH ANTI-JAMMING FEATURE
PILOT'S GUIDE
For use with Operational Revision Status (ORS) 01
Chelton Avionics Publication Number 150-040808 Rev. B
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Table of Contents
COBHAM RESTRICTED Table of Contents - 1
Table of Contents
INTRODUCTION.................................................................................................... Intro-1
I. GENERAL...............................................................................................Intro-1
II. APPLICABILITY......................................................................................Intro-1
Ill. HANDBOOK ORGANIZATION ...............................................................Intro-1
1 SYSTEM CONFIGURATION ......................................................Intro-1
2 CONTROLS AND DISPLAYS.....................................................Intro-1
3 OPERATION............................................................................... Intro-1
4 FAULT/WARNING ANNUNCIATIONS........................................Intro-1
5 TECHNICAL SPECIFICATIONS.................................................Intro-1
APPENDIX A - HAVE QUICK ANTI-JAMMING
TRAINING EXERCISE ............................................................................ Intro-2
IV. HOW TO USE THIS PILOT'S GUIDE.....................................................Intro-2
CHAPTER 1 –SYSTEM CONFIGURATION 1-1
1.0 CONTENTS OF THIS CHAPTER ................................................................1-1
1.1 DESCRIPTION OF EQUIPMENT ................................................................1-1
1.1.1 RMU-556 RADIO MANAGEMENT UNIT (RMU)..............................1-1
1.1.2 KDA-557 DATA ADAPTER (KDA) ...................................................1-1
1.1.3 RMS-555 SYSTEM CONFIGURATION MODULE...........................1-2
1.1.4 CONNECTED COMMUNICATIONS,NAVIGATION,
AND IDENTIFICATION EQUIPMENT (CNI) ....................................1-2
1.2 BENEFITS OF THE RMS-555 RADIO MANAGEMENT SYSTEM...............1-2
MAJOR BENEFIT #1....................................................................................1-2
MAJOR BENEFIT #2....................................................................................1-2
1.3 ADVANCED FEATURES OF THE RMS-555 RADIO MANAGEMENT
SYSTEM ......................................................................................................1-3
1.4 RMS-555 SYSTEM CONFIGURATIONS.....................................................1-4
CHAPTER 2 –CONTROLS AND DISPLAYS 2-1
2.0 CONTENTS OF THIS CHAPTER ................................................................2-1
2.1 INTRODUCTION TO CONTROLS AND DISPLAYS....................................2-1
2.2 EXPLANATION OF OPERATING CONTROLS AND DISPLAYS ................2-2
2.2.1 NORMAL OPERATING PAGE.........................................................2-2
2.2.2 FIELD SELECT KEYS .....................................................................2-4
2.2.3 TUNING & DATA ENTRY KNOBS...................................................2-4
2.2.4 TRANSFER SWITCHES..................................................................2-4
2.2.5 MODE SWITCHES ..........................................................................2-5
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2.2.6 DEDICATED FUNCTION SWITCHES.............................................2-5
PAGE SWITCH................................................................................2-5
DMEH SWITCH ...............................................................................2-5
IDT SWITCH....................................................................................2-6
SYS SWITCH...................................................................................2-6
SQ SWITCH.....................................................................................2-6
MEM SWITCH..................................................................................2-6
B/AZ SWITCH..................................................................................2-7
DIM SWITCH ...................................................................................2-7
2.2.7 REMOTE-MOUNTED SWITCHES...................................................2-7
ATC IDENT SWITCH.......................................................................2-7
UHF TRANSFER SWITCH ..............................................................2-7
NAV/MLS SELECT SWITCH ...........................................................2-7
2.3 ADDITIONAL DISPLAYS PROVIDED .........................................................2-8
2.3.1 GENERAL........................................................................................2-8
2.3.2 PRE-FLIGHT TEST DISPLAY..........................................................2-8
2.3.3 DUAL SYSTEM NORMAL OPERATING PAGES............................2-9
2.3.4 DME HOLD DISPLAY....................................................................2-10
2.3.5 DME MLS DISPLAY.......................................................................2-11
2.3.6 DIRECT TUNING DISPLAY...........................................................2-12
2.3.7 MEMORY PROGRAMMING DISPLAY..........................................2-12
2.3.8 TRANSPONDER/TCAS SPECIAL FUNCTIONS...........................2-13
2.3.9 UHF COM SPECIAL FUNCTIONS ................................................2-14
2.3.10 DIAGNOSTIC DISPLAYS ..............................................................2-16
CHAPTER 3 OPERATION 3-1
3.0 CONTENTS OF THIS CHAPTER ................................................................3-1
3.1 PRE-FLIGHT PROCEDURES......................................................................3-1
3.1.1 OPERATIONAL REVISION STATUS (ORS)
VERIFICATION................................................................................3-1
3.1.2 PRE-FLIGHT TEST PROCEDURES ...............................................3-2
3.1.3 ADJUSTING DISPLAY BRIGHTNESS.............................................3-3
3.1.4 SETTING RECEIVER AUDIO LEVEL..............................................3-5
3.1.5 VERIFYING CLEARANCE DELIVERY CONTROL HEAD
OPERATION....................................................................................3-5
STEP 1.............................................................................................3-5
STEP 2.............................................................................................3-5
STEP 3.............................................................................................3-6
3.2 IN FLIGHT PROCEDURES..........................................................................3-6
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3.2.1 VHF COM FUNCTIONS...................................................................3-6
THE VHF COM FIELD .....................................................................3-6
ENTERING A NEW FREQUENCY IN ONSIDE COM......................3-7
ENTERING A NEW FREQUENCY IN XSIDE COM
(DUAL RMU INSTALLATIONS).......................................................3-7
DIRECT TUNING...........................................................................3-11
MEMORY MODE OF OPERATION ...............................................3-12
DIRECT TUNING AND MEMORY MODE OF OPERATION..........3-13
3.2.2 VHF NAV FUNCTIONS..................................................................3-14
THE VHF NAV FIELD ....................................................................3-14
ENTERING A NEW FREQUENCY.................................................3-15
SELECTING DME HOLD...............................................................3-15
DIRECT TUNE MODE ...................................................................3-15
MEMORY MODE OF OPERATION ...............................................3-15
DIRECT TUNING AND MEMORY MODE OF OPERATION..........3-16
3.2.3 ATC TRANSPONDER FUNCTIONS..............................................3-16
THE ATC TRANSPONDER FIELD ................................................3-16
ENTERING A NEW CODE.............................................................3-16
SELECTING THE ATC MODE.......................................................3-17
3.2.4 ADF FUNCTIONS..........................................................................3-18
THE ADF FIELD.............................................................................3-18
ENTERING A NEW FREQUENCY.................................................3-18
SELECTING ADF MODES.............................................................3-18
DIRECT TUNE MODE ...................................................................3-19
MEMORY MODE OF OPERATION ...............................................3-19
DIRECT TUNING AND MEMORY MODE OF OPERATION..........3-19
3.2.5 TCAS FUNCTIONS........................................................................3-20
THE ATC/TCAS FIELD..................................................................3-20
SELECTING TCAS DISPLAY PARAMETERS...............................3-20
SELECTING THE ACTIVE ATC/TCAS MODES............................3-21
INITIATING ATC/TCAS SELF TEST..............................................3-21
3.2.6 MLS FUNCTIONS..........................................................................3-22
THE MLS FIELD ............................................................................3-22
ENTERING A NEW MLS CHANNEL..............................................3-22
SELECTING MLS AZIMUTH (AZ), BACK AZIMUTH (B/AZ)
AND GLIDESLOPE (GS) ...............................................................3-22
SELECTING MLS MODE OF OPERATION...................................3-24
3.2.7 UHF COM FUNCTIONS ................................................................3-24
3.2.7.1 GENERAL OPERATING PROCEDURES ........................3-24
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Table of Contents
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THE UHF COM FIELD......................................................3-24
ENTERING A NEW FREQUENCY...................................3-25
TRANSFERRING UHF CONTROL...................................3-25
TUNING THE GUARD FREQUENCY ..............................3-26
SELECTING AND USING THE SPECIAL UHF MEMORY
PAGE................................................................................3-26
3.2.7.2 UHF COM HAVE-QUICK ANTI-JAM OPERATION..........3-28
ACTIVATING AND DEACTIVATING AJ MODE ...............3-28
DISPLAYING SPECIAL UHF PAGES IN AJ MODE.........3-29
UHF MODE SELECTION FROM THE SPECIAL UHF
PAGE................................................................................3-29
AJ ACTIVE ON/OFF FUNCTION......................................3-30
GUARD MODE ACTIVATION...........................................3-30
WIDE BAND/NARROW BAND RECEIVER SELECTION 3-30
TONE OPERATION..........................................................3-30
WORD OF DAY ENTRY...................................................3-30
TIME OF DAY FUNCTION ...............................................3-30
OPERATIONAL DATE......................................................3-30
RETURN TO OPERATING PAGE....................................3-31
3.2.7.2.1 WORD OF DAY ENTRY PROCEDURES.........3-31
ACTIVATING WOD ENTRY .............................3-31
VERIFYING AJ OPERATION...........................3-33
SINGLE WOD ENTRY OPERATION................3-34
MULTIPLE WOD ENTRY OPERATION...........3-35
MWOD MODE ACTIVATION/ENTRY
VERIFICATION ................................................3-36
MULTIPLE WOD ERASE OPERATION...........3-38
3.2.7.2.2 FREQUENCY MANAGEMENT
TRAINING (FMT) CHANGE .............................3-39
3.2.8 TACAN FUNCTIONS.....................................................................3-41
THE TACAN FIELD........................................................................3-41
ENTERING A NEW TACAN CHANNEL.........................................3-41
SELECTING TACAN MODES........................................................3-41
DIRECT TUNE MODE ...................................................................3-42
MEMORY MODE OF OPERATION ...............................................3-42
DIRECT TUNE MEMORY MODE ..................................................3-42
3.3 POST FLIGHT PROCEDURES .................................................................3-42
3.4 ABNORMAL PROCEDURES.....................................................................3-42
3.5 EMERGENCY PROCEDURES..................................................................3-42
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Table of Contents
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CHAPTER 4 FAULT/WARNING ANNUNCIATION 4-1
4.0 CONTENTS OF THIS CHAPTER ................................................................4-1
4.1 INPUT/OUTPUT DIFFERENT MESSAGES.................................................4-1
4.2 INVALID DATA MESSAGES........................................................................4-2
4.3 EFIS ERROR MESSAGES..........................................................................4-4
4.4 ONSIDE RMU SYSTEM FAULT ERROR MESSAGES...............................4-4
4.5 ONSIDE RMU STUCK BUTTON MESSAGES ............................................4-5
4.6 ONSIDE RMU KNOB FAULT MESSAGES..................................................4-5
4.7 ONSIDE SYSTEM FAULT MESSAGE.........................................................4-6
4.8 SYSTEM CROSS-TALK MESSAGE............................................................4-7
4.9 MAJOR SYSTEM FAULT MESSAGE..........................................................4-7
4.10 SYSTEM CLOCK FAULT MESSAGE..........................................................4-8
4.11 WAITING FOR INITIALIZATION DATA MESSAGE.....................................4-8
4.12 EXPLANATIONS OF PREFLIGHT TEST RESULTS...................................4-8
4.12.1 DISPLAYS FOR INITIAL POWER-UP .........................................4-8
4.12.2 DISPLAYS ONLY UPON FAILURE .............................................4-9
4.13 CONFIGURATION ERROR MESSAGE.......................................................4-9
4.14 MEMORY DATA ERROR MESSAGE........................................................4-10
4.15 DIAGNOSTIC MEMORY FULL MESSAGE ...............................................4-10
4.16 KDA-557 IS NOT RESPONDING MESSAGE............................................4-10
CHAPTER 5 TECHNICAL SPECIFICATION 5-1
5.0 CONTENT OF THIS CHAPTER...................................................................5-1
5.1 RMU-556 DISPLAY LAYOUT ......................................................................5-1
5.2 SYSTEM INTERFACE.................................................................................5-2
APPENDIX A A-1
HAVE QUICK ANTI-JAMMING TRAINING EXERCISE .........................................A-1
SINGLE WOD ENTRY EXERCISE ........................................................................A-1
MULTIPLE WOD ENTRY EXERCISE ...................................................................A-2
INDEX IN-1
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Introduction
Introduction
I. GENERAL
This Pilot's Guide contains information about the benefits, features, and general
operational characteristics for the Chelton RMS-555 Radio Management System
(RMS). The appropriate Aircraft Flight Manual Supplement should be consulted for
specific operating procedures.
II. APPLICABILITY
The operating procedures contained in this Pilot's Guide are applicable to RMS-555
Radio Management Systems with Operational Revision Status (ORS) 01/04. ORS
04 is the same as 01 but adds Flight ID Entry to support ADS-B out.
Ill. HANDBOOK ORGANIZATION
The RMS-555 Pilot's Guide is organized into an Introduction, five Chapters, and an
Index. The contents of the Chapters are briefly described below.
1 SYSTEM CONFIGURATION
Provides a brief description of the RMS-555 System, and various configurations in
which it is available.
2 CONTROLS AND DISPLAYS
Introduces the controls which the pilot uses to operate the RMS-555 System, and the
displays that provide information back to the pilot.
3 OPERATION
Explains the normal operating procedures of the RMS-555 System.
4 FAULT/WARNINGANNUNCIATIONS
Describes fault and warning messages that can appear and suggested courses of
action.
5 TECHNICAL SPECIFICATIONS
Contains a listing of various technical parameters for the equipment. Additional
technical information is contained in the RMS-555 Installation Manual, and the RMS-
555 Maintenance and Overhaul Manual.
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Intro - 2
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Introduction
APPENDIX A - HAVE QUICK ANTI-JAMMING TRAINING EXERCISE
Presents a step-by-step program designed to teach flight crews the proper entry
procedures for single WOD and multiple WOD (MWOD).
IV. HOW TO USE THIS PILOT'S GUIDE
This Pilot's Guide assumes the reader is knowledgeable about airborne
communications and navigation systems. Only the operational procedures for the RMS-
555 Radio Management System are includedhere.
It is suggested that Chapters 1, 2, 3, and 4 be read prior to operating the RMS-555
during actual flight. The pilot should also be familiar with the appropriate Aircraft Flight
Manual Supplement prior to flight. Chapter 5 of this Guide may be reviewed at the
pilot's convenience.
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Chapter 1 –System Configuration
Page 1 - 1
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CHAPTER 1 –SYSTEM CONFIGURATION
1.0 CONTENTS OF THIS CHAPTER
This chapter contains a brief description of the various units that comprise the RMS-555
Radio Management System, along with an explanation of the various configurations of
the RMS-555 Radio Management System that are available.
1.1 DESCRIPTION OF EQUIPMENT
The RMS-555 Radio Management System replaces many individual radio controls,
control heads, or tuning units with one Radio Management Unit (RMU) installed in the
cockpit, and a remote mounted Data Adapter. The specific equipment models that
comprise the RMS-555 System are pictured below in Figure 1-1 and are briefly
described in the following sections.
Figure 1-1: RMS-555 System Components
1.1.1 RMU-556 Radio Management Unit (RMU)
The flight crew utilizes the RMU-556 (RMU) to control various Communication,
Navigation, and Identification equipment (CNI) aboard the aircraft. All operating
controls for the connected CNI except receiver audio level are incorporated in the RMU.
Receiver audio controls are included in the audio selector panel installed in theaircraft.
In response to the crew manipulating the various controls of the RMU, digital data is
transmitted to the KDA-557 Data Adapter.
1.1.2 KDA-557 Data Adapter (KDA)
Digital data from the RMU is transmitted to the KDA-557 where it is processed, and
transmitted directly to the specific CNI requiring new information. The KDA-557 also
listens for return information from the connected CNI, comparing actual status with that
commanded by the RMS-555 System.
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Chapter 1 –System Configuration
Page 1 - 2
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1.1.3 RMS-555 System Configuration Module
A non-volatile memory, the RMS-555 System Configuration Module, is programmed
during the RMS-555 System installation. This unit stores data identifying the specific
equipment connected to the system, and optional operating characteristics for a specific
aircraft installation.
1.1.4 Connected Communications, Navigation, and Identification Equipment (CNI)
The RMS-555 System can provide control of as many as three (3) VHF and/or two (2)
UHF communications transceivers, two (2) VHF navigation receivers, two (2) DMEs,
two (2) Mode S or Mode C transponders, two (2) ADF receivers, two (2) MLS receivers,
and two (2) TACAN receivers.
The individual CNI equipment executes the commands sent by the KDA-557, tuning to
the new frequencies desired by the flight crew. All signal reception and demodulation
functions occur within the connected CNI equipment, just as they do in aircraft
containing individual radio tuning units or control heads.
1.2 BENEFITS OF THE RMS-555 RADIO MANAGEMENT SYSTEM
The RMS-555 System provides two major benefits over conventional discrete radio
tuning units.
Major Benefit #1 -Flight Crew efficiency is increased while workload is reduced.
No longer must the crew move around the instrument panel and pedestal area to control
the various CNI equipment. All operating controls are contained in one 6.0 inch (152
mm) by 2.5 inch (62 mm) Radio Management Unit.
Major Benefit #2-Significant cockpit space savings are provided
In a typical corporate aircraft installation, the RMS-555 will provide a cockpit space
saving of greater than 50% over conventional individual radio control heads.
Several other benefits are provided with the installation of the RMS-555 System.
Advanced features provided within the RMS-555 System increase crew
efficiency.
With the space savings provided by the RMS-555 System, the rest of the cockpit
design may be optimized, further increasing crewefficiency.
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Chapter 1 –System Configuration
Page 1 - 3
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1.3 ADVANCED FEATURES OF THE RMS-555 RADIO MANAGEMENT SYSTEM
The RMS-555 System provides control for a wide variety of CNI equipment. Equipment
to provide additional functions may be installed and controlled by the RMU-556. This
eliminates the need for additional control heads. All connected CNI may be controlled
from either RMU-556 in dual installations. For example, either pilot can tune both VHF
COM 1 and VHF COM 2 from their Radio Management Unit. This capability increases
crew efficiency through reduced workload. Additionally, this capability enhances
reliability with dual independent tuning sources for connected CNI.
In addition to the expected Standby and Active Frequency storage available on
conventional control heads, the RMS-555 System provides features not available with
conventional control heads.
Twenty Pilot Programmable Memory Channels are provided for each VHF or
UHF COM, and ten are provided for VHF NAVs, ADFs, andTACANs.
Direct tuning for VHF COM, UHF COM, VHF NAV, TACAN, and ADF is provided.
When this feature is active, the pilot directly tunes the operating frequency of a
particular receiver. One way this feature can be used is to tune an ADF for best
sound quality when listening to commercial AM broadcaststations.
Internal Diagnostics for the RMS-555 are included along with an event diagnostic
memory.
RMS-555 System architecture allows great flexibility in installations. For example, the
control of CNI equipment connected to the RMS-555 may also be accomplished by a
compatible Flight Management System (FMS). Additionally, low power consumption
Clearance Delivery Control Heads may be installed with RMS-555 Systems to allow use
of the VHF COM or VHF NAV while minimizing power consumption prior to engine start.
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Chapter 1 –System Configuration
Page 1 - 4
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1.4 RMS-555 SYSTEM CONFIGURATIONS
Two major types of RMS-555 System installation are offered, single and dual. In the
single installation, one RMU-556, one KDA-557, and one RMS-555 Configuration
Module are installed aboard the aircraft as shown in Figure 1-2. With this configuration,
control of a large number of connected CNI can be provided with the single RMU-556.
The dual RMS-555 System installation is pictured in Figure 1-3. Note the two
independent tuning sources provided by the dual installation.
Versions of the RMU-556 are offered for single or dual systems, for installation of MLS
receivers, and for Military applications. Chapter 2, Controls and Displays, explains the
various RMU-556 configurations.
Figure 1-2: Single System Installation
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Chapter 1 –System Configuration
Page 1 - 5
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Figure 1-3: Dual System Installation
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Chapter 2 –Controls and Displays
Page 2 - 1
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CHAPTER 2 –CONTROLS AND DISPLAYS
2.0 CONTENTS OF THIS CHAPTER
This chapter describes the operating controls for the RMS-555 System. Following a
general introduction, the functions of all operating controls are briefly described. The
last section of this chapter provides examples of the displays provided to the crew by
the RMS-555 System.
2.1 INTRODUCTION TO CONTROLS ANDDISPLAYS
The RMS-555 provides tuning and mode selection capability for the connected CNI
equipment via one panel-mounted unit. A monochrome cathode ray tube is utilized to
display operating parameters of the CNI equipment. Individual Field Select Keys,
Transfer Switches, Mode Switches, and Dedicated Function Select Switches are utilized
in conjunction with rotary Increment/Decrement knobs to set operating frequencies,
codes, and modes of operation. Certain installations may also include remote-mounted
switches to allow control of special features.
All operational controls of the RMS-555 System are included on the RMU-556 as
depicted in Figure 2-1. Each control is explained in Section 2.2.
Figure 2-1: RMU-556 Operating Controls
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Chapter 2 –Controls and Displays
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2.2 EXPLANATION OF OPERATING CONTROLS AND DISPLAYS
2.2.1 Normal Operating Page
The display shown in Figure 2-2 is the Normal Operating Page. This page will always
be divided into five fields. Each field is dedicated to a CNI function, and contains the
parameters most frequently altered by the pilot. Individual fields are separated by a
dashed line. Figure 2-2 shows an RMU configured with the top field dedicated to VHF
COM, the second field to VHF NAV. The next field is configured for Microwave Landing
System (MLS). Below the MLS field are the Automatic Direction Finder (ADF) and
Transponder (ATC) fields.
Figure 2-2: A Typical Normal Operating Page
The type of CNI and location of various fields on the RMU are set at the time of
installation, and stored in the RMS-555 System Configuration Module. The Flight
Manual Supplement for a particular aircraft will include details of the field definitions for
a specific RMS-555 System installation. Chapter 5, Technical Specifications, of this
Pilot's Guide provides basic information on the types of CNI possible in the field
Locations. Installation personnel may refer to the installation manual, 006-00675-0000,
for detailed information.
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Chapter 2 –Controls and Displays
Page 2 - 3
Page 2 - 3
Page 2 - 3
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Some applications will require more than five fields to handle all installed CNI functions.
Multiple Normal Operating Pages will appear as shown in figure 2-3 when more than
five fields are required. The primary operating page contains a MORE message in the
bottom field. Depressing the switch adjacent to the MORE will bring up the secondary
Normal Operating Page as shown in right side of Figure 2-3. By pressing the switch
adjacent to the RETURN message, the primary Normal Operating Page will be
displayed again. The switch adjacent to the MORE may be pressed to view any other
Normal Operating Pages.
Figure 2-3: Multiple Normal Operating Pages
These commodities, technology or software are controlled in accordance with the United States Export Administration Regulations, Export Classification
Control Number(ECCN) EAR99. When exporting, diversion contrary to U.S. law is prohibited.

Chapter 2 –Controls and Displays
Page 2-4
COBHAM RESTRICTED
2.2.2 Field Select Keys
Control of an individual CNI unit is accomplished by first depressing the appropriate
Field Select Key at the left edge of the RMU-556. A rectangular cursor (shown in Figure
2-4) appears in that field. Whenever the cursor appears, the information highlighted by
the cursor may be altered by the Tuning & Data Entry Knobs.
Figure 2-4: Example of the Cursor
2.2.3 Tuning & Data EntryKnobs
Frequencies, codes, or any other information highlighted by the cursor may be changed
by use of the Tuning & Data Entry Knobs which are located on the lower right of the
unit. The two knobs function as three independent switches. The largest knob changes
the largest digits (i.e., 1 MHz increments of COM frequencies), while the smaller knob
alters intermediate digits (i.e., 25 kHz increments of COM frequencies). The third switch
function is accessed by pulling the smaller knob out. When the small knob is pulled out
and rotated, such parameters as half Kilohertz ADF frequencies, and TACAN X or Y
Channels may be altered.
2.2.4 Transfer Switches
Switches with a diamond label are Transfer Switches and cause frequencies stored in
the Standby and Active locations to switch places. The receiver is tuned to the
frequency appearing in the Active location. Normally, you will first use the appropriate
Field Select Key to choose which radio to set to a new frequency. You may then use
the knobs to select a new Standby frequency, and finally press the Transfer Switch to
tune the receiver to the new frequency. The previous Active frequency is retained in the
Standby location.
These commodities, technology or software are controlled in accordance with the United States Export Administration Regulations, Export Classification
Control Number(ECCN) EAR99. When exporting, diversion contrary to U.S. law is prohibited.