Honeywell BENDIX/KING KY 96A User manual

INSTALLATION MANUAL
KY 96A, KY 97A
VHF COMMUNICATION
TRANSCEIVER
MANUAL NUMBER 006-00674-0004
Revision 4, April 2003
h

WARNING
THE ENCLOSED TECHNICAL DATA IS ELIGIBLE FOR EXPORT UNDER LICENSE DES-
IGNATION NLR AND IS TO BE USED SOLELY BY THE INDIVIDUAL/ ORGANIZATION
TO WHOM IT IS ADDRESSED. DIVERSION CONTRARY TO U.S. LAW IS PROHIBITED.
COPYRIGHT NOTICE
©1989, 1994, 1996, 2003 HONEYWELL INTERNATIONAL INC.
REPRODUCTION OF THIS PUBLICATION OR ANY PORTION THEREOF BY ANY
MEANS WITHOUT THE EXPRESS WRITTEN PERMISSION OF HONEYWELL IS
PROHIBITED. FOR FURTHER INFORMATION CONTACT THE MANAGER, TECHNICAL
PUBLICATIONS, HONEYWELL, ONE TECHNOLOGY CENTER, 23500 WEST 105TH
STREET OLATHE KS 66061 TELEPHONE: [phone].

BKY 96A, KY 97A
Rev 4, Apr 2003 IM 006-00674-0004.dwd RH-1
REVISION HISTORY
INSTALLATION MANUAL
BENDIX/KING
KY 96A, KY 97A
VHF Communication Transceiver
PART NUMBER REV DATE DESCRIPTION
---------------------------------------------------------------------------------------------------------------------
006-00674-0004 4 Apr/2003
006-00674-0003 3 Apr/1994
006-00674-0002 2 Jan/1994
006-00674-0001 1 Oct/1989

BKY 96A, KY 97A
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THIS PAGE RESERVED

BTABLE OF CONTENTS KY 96A, KY 97A
Rev 4, Apr 2003 MM 006-00674-0004.dwd TOC-1
SECTION I
GENERAL INFORMATION
Paragraph Page
1.1 Introduction.............................................................................................1-1
1.2 Description of Equipment.........................................................................1-1
1.3 Technical Characteristics.........................................................................1-1
1.4 Units and Accessories Supplied ..............................................................1-4
1.5 Accessories Required, But Not Supplied.................................................1-6
1.6 License Requirements.............................................................................1-6
1.7 Continued Airworthiness..........................................................................1-6
LIST OF TABLES
Table Page
1-1Technical Characteristics.........................................................................1-2
1-2KY96A Configurations ............................................................................1-4
1-3KY97A Configurations ............................................................................1-5
SECTION II
INSTALLATION
Paragraph Page
2.1 General....................................................................................................2-1
2.2 UnpackingandInspectionEquipment .....................................................2-1
2.3 Equipment Installation .............................................................................2-1
2.4 Post Installation Checks ..........................................................................2-4
LIST OF TABLES
Table Page
2-1CompatibleInstallations...........................................................................2-2
LIST OF ILLUSTRATIONS
Figure Page
2-1KY96A, KY 97A Cover-On Adjustments..... ...........................................2-5
2-2KY96A Pin Functionand Location Diagram...........................................2-6
2-3KY97A Pin Functionand Location Diagram...........................................2-7
2-4MolexTerminal andTools........................... ...........................................2-8
2-5KY96A, KY 97A Outline and Mounting....... Dwg 155-05666-0001......2-11
2-6KY96A, KY 97A InstallationAssembly........ Dwg 155-05690-0000......2-13
2-7Connector (P/N030-00101-0002 R-9) Assembly..................................2-15
2-8KY96A Interconnect.................................... Dwg 155-01583-0000......2-17

BTABLE OF CONTENTS KY 96A, KY 97A
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2-9KY97A Interconnect.................................... Dwg 155-01583-0001......2-19
2-10DualKY 96A Interconnect ........................... Dwg 155-01584-0000......2-21
2-11DualKY 97A Interconnect ........................... Dwg 155-01584-0001......2-23
2-12DualKY 96A with KA 25 Interconnect ......... Dwg 155-01585-0000......2-25
2-13DualKY 97A with KA 25 Interconnect ......... Dwg 155-01585-0001......2-27
SECTION III
OPERATION
Paragraph Page
3.1 Power On Unit .........................................................................................3-1
3.2 Transmit Indicator....................................................................................3-1
3.3 Modes of Operation .................................................................................3-1
3.4 Remote Frequency Transfer....................................................................3-3
3.5 Remote Channel Increment.....................................................................3-3
3.6 Dim Select ...............................................................................................3-3
LIST OF ILLUSTRATIONS
Figure Page
3-1KY96A, KY 97A Controls....................... ................................................3-4
APPENDIX E
ENVIRONMENTAL QUALIFICATION FORMS
LIST OF ILLUSTRATIONS
Figure Page
E-1KY96A Environmental Qualification Form ............................................. E-3
E-2KY97A Environmental Qualification Form ............................................. E-4

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SECTION I
GENERAL INFORMATION
1.1 INTRODUCTION
This manual contains information relative to the physical, mechanical, and electrical
characteristics of the Bendix/ King KY 96A and KY 97A VHF Communication Trans-
ceivers. Installation and operating procedures are also included. Information relative
to the maintenance, alignment, and procurement of replacement parts may be found
in the KY 96A, KY 97A Maintenance/ Overhaul Manual.
1.2 DESCRIPTION OF EQUIPMENT
The KY 96A and KY 97A VHF Comm Transceivers consist electrically of five sections:
receiver, transmitter, synthesizer, display circuitry, and the microprocessor board.
The transceivers are identical except that the KY 96A operates at 28 Vdc and the
KY 97A operates at 14 Vdc.
The KY 96A, KY 97A is currently available with 25 kHz receiver selectivity, 100 mW
into 500 ohms or 8 W into 4 ohms audio outputs (4 W into 4 ohms in the KY 97A), and
operating ranges of118.000 to 136.975 MHz. See paragraph 1.4belowfor descrip-
tions of specific versions.
NOTE: Previous versions were available with 50 kHz receiver selectivity; however,
it is not a current configuration.
The KY 96A, KY 97A has the capability of programming up to nine memory channel
frequencies for later recall. Channel frequency information is stored in non-volatile
memory so that when the radio is turned off and then back on, channel information is
retained. Both units also have the capability of remote transfer of Use and Standby
frequencies, and remote recall of channel frequency information.
1.3 TECHNICAL CHARACTERISTICS

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TABLE 1-1 Technical Characteristics
SPECIFICATION CHARACTERISTIC
TSO COMPLIANCE:
Transmitter: TSO C37c, DO-186 Class 4
Receiver:
KY96A (versions -10,-30,-50,-60,-70)
KY96A (versions -11,-31,-51,-61)
KY97A (versions -10,-30,-50,-60,-70)
KY97A (versions -11,-31,-51,-61)
TSO C38c, DO-186 Class C + D
TSO C38c, DO-186 Class A + B
TSO C38c, DO-186 Class C + D
TSO C38c, DO-186 Class A + B
ENVIRONMENTAL DATA: See Environmental Qualification Form in Appendix A.
PHYSICAL DIMENSIONS
(Including Weight):
Referto Figure 2-5, Dwg No 155-05666-0001.
MOUNTING: Panel mounted, no shock mounting required.
TEMPERATURE RANGE: -20 deg C to +55 deg C with short time operation at
+70 deg C.
POWER REQUIREMENTS:
KY 96A: 27.5 Vdc
(Receive)
(Transmit)
(Lighting)
400 mA Audio squelched LCD Max brightness.
500 mA Audio @ 100 mW LCD Max brightness.
1100 mA Audio @ 8 W LCD Max brightness.
5 A transmit at 5 W RF output LCD Max brightness.
138 mA Max @ 28 Vdc.
KY 97A: 13.75 Vdc
(Receive)
(Transmit)
(Lighting)
600 mA Audio squelched LCD Max brightness.
700 mA Audio @ 100 mW LCD Max brightness.
1100 mA 4 ohms Audio @ 8 W LCD Max brightness.
6 A transmit at 5 W RF output LCD Max brightness.
275 mA Max @ 14 Vdc.
FREQUENCY RANGE:
(version dependent,see paragraph 1.4)
118.000 MHz to 136.975 MHz in 25 kHz increments.
FREQUENCY STABILITY: 0.0015% from -20 deg C to +55 deg C.
DESIGN: All solid state. Printed circuit board and point to point
wiring.

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TRANSMITTER
EMISSION: 6K 00A3E
OCCUPIED BANDWIDTH: 25 kHz
POWER OUTPUT:
KY 96A:
KY 97A:
5 watts minimum
5 watts minimum
MODULATION: 70% modulation capability with 98% limiting.
Less than 15% distortion at 70% modulation.
SIDETONE OUTPUT: Adjustable up to 100 mW into 500 ohms headphones.
MICROPHONE: Standard carbon or dynamic mic containing transistor-
ized preamp. Must provide 100 mVrms into 100 ohm
load.
HARMONIC CONTENT: Greater than 60 dB down from carrier.
HIGH TEMPERATURE PROTECTION: If the transmitter or modulator circuits become hot
enough to potentially hurt any components in the trans-
ceiver, a protection circuit will automatically turn down
the transmitter power consumption and output power
(1.25 watts minimum).
DUTY CYCLE: 1 minute on, 4 minutes off.
FCC IDENTIFIER: ASY7BL KY96A,KY97A
RECEIVER
RECEIVER SENSITIVITY: 2 uV (hard) or less for 6 dB S+N/N with 1 kHz tone
modulated 30%.
RECEIVER SELECTIVITY:
Class C + D
(version dependent,see paragraph 1.4)
Class A + B
(version dependent,see paragraph 1.4)
-6 dB at +/- 8 kHz minimum. 40 dB at +/- 17 kHz. 60
dB at +/- 22 kHz. DO-186.
-6 dB at +/- 15 kHz minimum. 60 dB at +/- 43 kHz.
DO-186.
RECEIVER OUTPUT: 100 mW minimum into 500 ohms or 8 W into 4 ohms
(KY 96A) or 4 W into 4 ohms (KY 97A).
AGC CHARACTERISTIC: From 5 uV to 20,000 uV audio output will not vary
more than 3 dB.
SQUELCH: Automatic squelch (internally adjustable carrier-to-
noise setting) with manual disable.
TABLE 1-1 Technical Characteristics
SPECIFICATION CHARACTERISTIC

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1.4 UNITS AND ACCESSORIES SUPPLIED
NOTE: Not all configurations listed below are currently available, consult Bendix/
King Equipment Catalog for further information.
1.4.A. KY 96A VHF Comm Transceiver, P/N 064-1052-XX, which is configured in the
following versions:
1.4.B. KY 97A VHF Comm Transceiver, P/N 064-01051-00XX, which is configured in
the following versions:
SPURIOUS RESPONSES AND CROSS
MODULATION PRODUCTS:
At least 80 dB down.
INTERCOM INPUT: When the mic is connected to the intercom input both
the receiver and mic audio appears at the audio output.
100 mVrms of mic audio into 500 ohms is required for
100 mW output.
TABLE 1-2 KY 96A Configurations
PART NUMBER RECEIVER
SELECTIVITY AUDIO OUTPUT FREQUENCY RANGE
064-1052-10 25 kHz 500 ohm headphone 118.000 to 135.975 MHz
064-1052-11 50 kHz 500 ohm headphone 118.000 to 135.975 MHz
064-1052-30 25 kHz 500 ohm headphone 118.000 to 136.975 MHz
064-1052-31 50 kHz 500 ohm headphone 118.000 to 136.975 MHz
064-1052-50 25 kHz 8 W into 4 ohms 118.000 to 135.975 MHz
064-1052-51 50 kHz 8 W into 4 ohms 118.000 to 135.975 MHz
064-1052-60 25 kHz 8 W into 4 ohms 118.000 to 136.975 MHz
064-1052-61 50 kHz 8 W into 4 ohms 118.000 to 136.975 MHz
064-1052-70* 25 kHz 8 W into 4 ohms 118.000 to 136.975 MHz
*Crown Series Unit
TABLE 1-1 Technical Characteristics
SPECIFICATION CHARACTERISTIC

BKY 96A, KY 97A
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1.4.C. The KY 96A, KY 97A Installation Kit, P/N 050-02600-0000, which contains the
following components:
050-02600-0000 INSTL KIT KY196A REV AA
---------------------------------------------------------------
SYMBOL PART NUMBER FIND NO DESCRIPTION UM -0000
---------------------------------------------------------------
REF1 155-05690-0000 INSTALL ASSY RF .00
030-00101-0002 PANEL MOUNT PLUG EA 1.00
030-01094-0080 CONNECTOR KEYED EA 1.00
030-01107-0031 CONNECTOR TERM 31T EA 1.00
057-02193-0001 DECAL COMM 1 EA 1.00
057-02193-0002 DECAL COMM 2 EA 1.00
057-05944-0003 KIT TSO LABEL EA 1.00
089-02013-0037 NUT FLAT 6-32 EA 1.00
089-02051-0024 NUT SPEED U 6-32 EA 4.00
089-02191-0022 NUT LOCK 6-32 EA 1.00
089-02353-0001 NUT CLIP 6-32 EA 6.00
089-05903-0007 SCR PHP 4-40X7/16 EA 2.00
089-05907-0008 SCR PHP 6-32X1/2 EA 1.00
089-06012-0008 SCR FHP 6-32X1/2 EA 6.00
089-08094-0030 WSHR FLT STD .446 EA 1.00
089-08168-0002 WASHER WAVE EA 1.00
090-00019-0007 RING RTNR .438 EA 1.00
091-00072-0002 CABLE CLAMP 2 EA 1.00
TABLE 1-3 KY 97A Configurations
PART NUMBER RECEIVER
SELECTIVITY AUDIO OUTPUT FREQUENCY RANGE
064-1051-10 25 kHz 500 ohm headphone 118.000 to 135.975 MHz
064-1051-11 50 kHz 500 ohm headphone 118.000 to 135.975 MHz
064-1051-30 25 kHz 500 ohm headphone 118.000 to 136.975 MHz
064-1051-31 50 kHz 500 ohm headphone 118.000 to 136.975 MHz
064-1051-50 25 kHz 4 W into 4 ohms 118.000 to 135.975 MHz
064-1051-51 50 kHz 4 W into 4 ohms 118.000 to 135.975 MHz
064-1051-60 25 kHz 4 W into 4 ohms 118.000 to 136.975 MHz
064-1051-61 50 kHz 4 W into 4 ohms 118.000 to 136.975 MHz
064-1051-70* 25 kHz 4 W into 4 ohms 118.000 to 136.975 MHz
*Crown Series Unit

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1.5 ACCESSORIES REQUIRED, BUT NOT SUPPLIED
1.5.A. Communications antenna and cables.
1.5.B. Headphones: 500 ohm nominal impedance.
1.5.C. Microphone: Low impedance carbon or dynamic with transistorized preamp.
1.5.D. For 13.75 V operation of the KY 96A a 14-to-28 V convertor such as KGS Elec-
tronics Model RB-125 or equivalent may be used. The RB-125 is available from
Bendix/ King under P/N 068-01016-0003.
1.6 LICENSE REQUIREMENTS
The transmitter, as installed in the aircraft, requires an Aircraft Radio Station License.
This license is obtained by filing FCC Form 404, Aircraft Radio Station License Appli-
cation, which may be obtained from your local FCC Field Office. The KY 96A, KY 97A
may be operated for up to 30 days without a station license after filing Form 404 while
awaiting the receipt of the radio license if a copy of FCC Form 404 is kept in the air-
craft.
NOTE: This equipment has been type accepted by the FCC and entered on their
list of type accepted equipment as AlliedSignal KY 96A/97A, and must
be identified as AlliedSignal KY 96A/97A on FCC Form 404.
CAUTION: THE VHF TRANSMITTER IN THIS EQUIPMENT IS GUARANTEED TO
MEET FEDERAL COMMUNICATIONS COMMISSION ACCEPTANCE
OVER THE OPERATING TEMPERATURE RANGE ONLY WHEN A
BENDIX/ KING CRYSTAL IS USED IN THE STABILIZED MASTER OS-
CILLATOR. USE OF OTHER THAN A BENDIX/ KING CRYSTAL IS
CONSIDERED AN UNAUTHORIZED MODIFICATION AND MAY VOID
THE WARRANTY.
NOTE: The Federal Communications Commission requires that the operator of
the transmitter of this equipment hold a Restricted Radio Telephone Op-
erator Permit (FCC Form 753) or higher class license. A permit may be
obtained by a U.S. citizen from the nearest field office of the FCC; no ex-
amination is required.
1.7 CONTINUED AIRWORTHINESS
The instructions for continued airworthiness in the TC or STC approvals for this prod-
uct supplements or supersedes the instructions for continued airworthiness in this
manual.
This Bendix/ King product KY 96A, KY 97A is designed and manufactured to allow on-
condition maintenance. On-condition maintenance is described as follows. There are
no periodic service requirements necessary to maintain continued airworthiness. No
maintenance is required until the equipment does not properly perform its intended

BKY 96A, KY 97A
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function. When service is required, a complete performance test must be accom-
plished following any repair action. Consult the appropriate section of the Mainte-
nance Manual for complete performance test information.

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THIS PAGE RESERVED

BKY 96A, KY 97A
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SECTION II
INSTALLATION
2.1 GENERAL
This section contains suggestions and factors to consider before installing the KY 96A,
KY 97A. Close adherence to these suggestions will assure more satisfactory perfor-
mance from the equipment.
The conditions and test required for the TSO and MOPS approval of this article are
minimum performance standards. It is the responsibility of those installing this article
either on or with a specified type or class of aircraft to determine that the aircraft instal-
lation conditions are within the TSO and MOPS standards. These articles must have
separate approval for installation in an aircraft. Any features in this equipment outside
the requirements of this applicable TSO and MOPS must be evaluated and approved
as part of the installation approval. The article may be installed only if performed under
14 CFR part 43 or the applicable airworthiness requirements.
2.2 UNPACKING AND INSPECTING EQUIPMENT
Unpack the equipment carefully and inspect each item for evidence of damage in-
curred during shipment. If a damage claim must be filed, save the shipping container
and all packing materials to substantiate your claim. The claim should be filed with the
transportation company as soon as possible. The shipping container and packing
should be saved in any case in the event that storage or reshipment of the equipment
is necessary.
2.3 EQUIPMENT INSTALLATION
The KY 96A, KY 97A installation will conform to standards designated by the custom-
er, installing agency, and existing conditions as to the unit location and type of instal-
lation. However, the following suggestions should be considered before installing the
KY 96A, KY 97A. The installing agency will supply and fabricate all external cables.
The connectors required are supplied by Bendix/ King. Connector pin function dia-
grams are included in this manual asFigure2-2,and Figure 2-3.Interconnect dia-
grams are included in thismanual asFigure 2-8through Figure 2-13.Refer to the ta-
ble below for compatible installations.

BKY 96A, KY 97A
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NOTE: Use good quality stranded wire with at least 600 V insulation that will not
support a flame.
2.3.1 Avionics Cooling Requirements for Panel Mounted Equipment
The most important contribution to improved reliability of avionics equipment is to limit
the maximum operating temperature of each unit. While modern designs consume
less total energy, the heat dissipated per unit volume (watts/cubic inch) remains much
the same due to contemporary high density packaging techniques. While each indi-
vidual unit may or may not require forced air cooling, the combined heat generated by
several units operating in a typical panel or rack can significantly degrade the reliability
of the equipment if provisions for adequate cooling are not incorporated in the initial
installation.
2.3.2 Mounting Rack Installation
2.3.2.A. The KY 96A, KY 97A is mounted rigidly in the aircraft panel. Select a position
in the panel that is not too close to any high external heat source. Remember
to allow adequate space for installation of cables and connectors. Avoid sharp
bends and placing the cables too near the aircraft control cables.
2.3.2.B. When installing two or more panel mounted units in a stack, the mounting
trays shall be spaced 0.050 inches (0.127 cm) apart. Current production
mounting trays have 0.025 inch (0.064 cm) dimples built in to top and bottom
and both sides so that the trays will automatically be spaced properly.
2.3.2.C.Refer to Figure 2-5for the KY 96A, KY97A mounting dimensions. Markand
cut the mounting holes.
2.3.2.D.Securethe mountingrack to theinstrument panelperFigure 2-5and Figure
2-6.The rear mounting bossesshouldbe attached totheairframe bymeans
of support brackets.
2.3.3 Antenna Installation
A conventional 50 ohm vertically polarized comm antenna is required with the KY 96A,
KY 97A. Vertical bent whip antennas are not recommended. Wideband comm anten-
TABLE 2-1 Compatible Installations
CURRENT INSTALLATION
KY196A KY197A KY196 KY197
KY96A Compatible YES*1 NO NO NO
KY97A Compatible NO YES*1 NO NO
*1 Will work but backlighting will be too bright and unsuitable, and the audio amplifier
will not function because the current installation is not wired for an audio amplifier.

BKY 96A, KY 97A
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nas provide efficient operation over the comm band. Antennas should be installed per
manufacturer’s recommendations. Additional recommendations are as follows:
2.3.3.A. Mount antenna on a flat metal surface or install a ground plane at least 18
inches square.
2.3.3.B. The antenna should be well removed from any projections and the engine(s)
and propeller(s). Also, for satisfactory operation, the antenna isolation be-
tween a communications transmitter antenna and a nav receiver antenna, as
well as between dual comm antennas, should be a minimum of 30 dB. VHF
antennas mounted on top and bottom have approximately 30 dB isolation. A
horizontally polarized nav antenna and a vertically polarized comm antenna
will have practical values from 10 to 30 dB.
2.3.3.C. If both comm antennas must be top mounted or both bottom mounted, anten-
na isolation between comms may not be adequate to prevent re-radiation. In
single audio panel installations, re-radiation can be prevented by use of the
XMT-REC interlock. Refer to Installation Bulletin #194. In dual audio panel
installations where simultaneous operation of both comms is desired, the
XMT-REC interlock is not recommended.
2.3.4 Cable Harness and Connector Assembly
The KY 96A, KY 97A uses a special connector that mates directly with the printed cir-
cuit board inside the unit. Assembly of the connector is as follows:
2.3.4.A. Contact Terminal AssemblyusingMolex Crimper (seeFigure2-4)
2.3.4.A.1 Strip each wire 5/32 inch for contact terminal, P/N 030-01107-00XX. (The last
two digits of the part number indicates the number of terminals required).
2.3.4.A.2 Open the Molex HT 1921 hand crimper with the engraved side toward the op-
erator. Place the conductor tab section of a contact terminal on Anvil A with
the contact portion facing away from the operator. Close the crimper slightly
until the contact tabs touch the female jaw.
2.3.4.A.3 Insert the stripped conductor until the insulation is even with the side of the
crimper facing the operator. Crimp the conductor tabs by squeezing the han-
dles together until the jaws are fully closed or a sufficient crimp is obtained.
2.3.4.A.4 Move the lead to Anvil A. Place the insulating tab section on Anvil A. Crimp
again until the jaws are fully closed or until a sufficient crimp is obtained.
2.3.4.B. Contact Insertion into Molex Connector Housing
After the contact terminals have been installed on the wiring harness, the contact ter-
minals can be inserted into the proper location in the connector housing (P/N 030-
01094-0080). The terminal cannot be inserted upside down. Be sure to push the ter-
minal all the way in until a click can be felt or heard. The self-locking feature can be
tested by gently pulling on the wire.
2.3.4.C. Location of Polarizing Key in Housing

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Prior to insertion of connector into rear of unit, check polarizing key position between
contacts 8 and 9. Refer to Figure2-6to check correct positionof polarizing key.
2.3.4.D. Extraction of Contact from Molex Connector
2.3.4.D.1 Slip the flat narrow blade of a Molex HT-1884 contact ejector tool, P/N 047-
05099-0001, under the contact on the mating side of the connector. By turn-
ing the connector upside down one can see the blade slide into the stop.
2.3.4.D.2 When the ejector is slid into place, the retaining tab of the contact is raised,
allowing the contact to be removed by pulling moderately on the lead.
2.3.4.D.3 Neither the contact or position is damaged by removing a contact; however,
the contact should be visually checked before reinstalling to be certain that re-
taining tab “A” extends asshown inFigure 2-4for retention in connector.
2.3.4.E. Coax Connector
Refer to Figure2-7for instructions for mounting the right angle coaxialBNCconnector
to the coax cable. Install the connector into the mounting rack.
2.3.5 KY 96A, KY 97A Installation
2.3.5.A. Looking at the top of the unit, make sure the front lobe of the hold down device
is in a vertical position.
2.3.5.B. Slide the unit into the mounting rack until the front lobe touches the mounting
rack.
2.3.5.C. Insert a 3/32 inch Allen wrench through the hole in the front panel to engage
the locking screw. Turn clockwise until the rear lobe engages the mounting
rack. Continue turning until the unit is secure in the mounting rack. DO NOT
OVERTIGHTEN.
2.3.5.D. To remove the unit turn the locking screw counterclockwise, using a 3/32 inch
Allen wrench, until the unit disengages from the mounting rack. Pull the unit
out of the mounting rack by pulling on the metal tabs located behind the front
panel on each side of the unit.
2.4 POST INSTALLATION CHECKS
An operational performance flight test is recommended after the installation is com-
pleted to insure satisfactory performance of the equipment in its normal environment.
Check all aircraft control movements to be sure no electrical cables interfere with their
operation. To check the communications transceiver, maintain an appropriate altitude
and contact a ground station facility at a range of at least 50 nautical miles. Then con-
tact a ground station close in. Pull the volume control out to defeat the automatic
squelch feature and listen for any unusual electrical noise which would reduce the
comm receiver sensitivity by increasing the squelch threshold. If possible, verify the
communications capability on both the high and low end of the VHF comm band.

BKY 96A, KY 97A
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CAUTION: BEFORE FLIGHT, CHECK THE ANTENNA VSWR. THIS SHOULD BE
CHECKED WITH AN IN-LINE TYPE WATTMETER INSERTED IN THE
COAXIAL TRANSMISSION LINE BETWEEN THE TRANSCEIVER
AND THE ANTENNA. ANY PROBLEM WITH THE ANTENNA INSTAL-
LATION WILL MOST LIKELY BE SEEN AS A HIGH REFLECTED POW-
ER. VSWR OF 3:1 WILL RESULT IN A 25% LOSS OF POWER.
NOTE: The LCD back lighting can be set for the most pleasing intensity by ad-
justing the panel lighting. See paragraph 3.6 of thismanualfor dimse-
lect.
2.4.1 Adjustments
The KY 96A, KY 97A are factory adjusted to accommodate typical requirements for
most aircraft configurations. However, baseline mic gain, sidetone, carrier/noise
squelch, and carrier squelch may be adjusted through the cover for specific aircraft
configurations. See Figure 2-1.
FIGURE 2-1 KY 96A, KY 97A Cover-On Adjustments

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FIGURE 2-2 KY 96A Pin Function and Location Diagram
J96A
~
1 2 3 4 5 6 7 8 9 10 11 12131415
FRONT VIEW - CONNECTOR
(AS SEEN IF VIEWING FROM THE FRONT OF THE RACK)
H ---------- - 500 a AUDIO HI
7 --------------- - 500 a AUDIO LO
J - -------------- MIC AUDIO HI
K - ------- MIC INTERCOM
9 - ------------ MIC KEY
8 -------------- MIC AUDIO LO
10 - ----------- SQUELCH AND COMPRESSOR DISABLE
L - AGC TEST/REMOTE CHANNEL INC
11 - REMOTE TRANSFER
R - -------- AIRCRAFT POWER +27.5 VDC
14- --------------- AIRCRAFT POWER +27.5 VDC
P
----------------SWITCHED +27.5 VDC
13 -------------SWITCHED +27.5 VDC
N -
---------------- +2 7.5 VDC
12- -------------- +27.5 VDC
F
------- AIRCRAFT GROUND
6 ----------- AIRCRAFT GROUND
S
-------- AIRCRAFT GROUND
15 AIRCRAFT GROUND
B
----------- N/C
1 -
----------- + 28 VDC LIGHTING HI
2 -------------- -DETECTED AUDIO OUT
A --------------- -DIM SELECT
E --------- - 4a AUDIO OUT
5 ------- 4a AUDIO LO
D - AUX AUDIO IN 1
C - --------- AUX AUDIO IN 2
3 - ------------ AUX AUDIO IN 3
4 --------------------- AUX AUDIO IN LO
M - ---------------------- XMIT REC INTERLOCK
-INPUTS OUTPUTS -
J96A2
E401
--------------------- -ANTENNA