AlliedSignal ' fe ELECTRONIC AND AVIONICS SYSTEMS INSTALLATION MANUAL BENDIX/KING° KT 76A/78A ATCRBS TRANSPONDER MANUAL NUMBER 006-001 43-0006 REVISION 6, NOVEMBER 1996WARNING INFORMATION SUBJECT TO THE EXPORT CONTROL LAWS. THIS DOCUMENT, WHICH INCLUDES ANY ATTACH- MENTS AND EXHIBITS HERETO, CONTAINS INFORMATION ‘SUBJECT TO INTERNATIONAL TRAFFIC IN ARMS REGULA- TION (ITAR) OR EXPORT ADMINISTRATION REGULATION (EAR) OF 1979, WHICH MAY NOT BE EXPORTED, RE- LEASED OR DISCLOSED TO FOREIGN NATIONALS INSIDE OR OUTSIDE THE U.S: WITHOUT FIRST OBTAINING AN EX- PORT LICENSE. VIOLATORS OF ITAR OR EAR MAY BE SUB- JECT TO A PENALTY OF 10 YEARS IMPRISONMENT AND A FINE OF $1,000,000 UNDER 22 U.S.C. 2778 OR SECTION 2410 OF THE EXPORT ADMINISTRATION ACT OF 1979. IN- CLUDE THIS NOTICE, WITH ANY REPRODUCED PORTION OF THIS DOCUMENT. COPYRIGHT NOTICE ‘© 1996 ALLIEDSIGNAL, INC. REPRODUCTION OF THIS PUBLICATION OR ANY PORTION ‘THEREOF BY ANY MEANS WITHOUT THE EXPRESS WRIT- TEN PERMISSION OF ALLIEDSIGNAL COMMERCIAL AVIONICS SYSTEMS'IS PROHIBITED. FOR FURTHER IN- FORMATION CONTACT THE MANAGER, TECHNICAL PUB- LICATIONS, ALLIEDSIGNAL COMMERCIAL AVIONICS SYS- TEMS, 400 NORTH ROGERS ROAD, OLATHE, KANSAS, 66062. TELEPHONE: (913) 768-2398.WW 12 13 14 15 16 a4 22 23 2.4 25 26 27 28 3.4 BENDIX/KING ~ KT 76A/784 ‘TRANSPONDER: SECTION! GENERAL INFORMATION INTRODUCTION GENERAL DESCRIPTION TECHNICAL CHARACTERISTICS .........-..222206 Danaea sass ele UNITS AND ACCESSORIES SUPPLIED ........:...0.065 peal ACCESSORIES REQUIRED BUT NOT SUPPLIED ........ ELL eee aA LICENSE REQUIREMENTS ...........:.c00c0eeeseesseeeeteeeeeeeeeerees SECTION II INSTALLATION GENERAL INFORMATION UNPACKING AND INSPECTING EQUIPMENT ........00000000lesssseeeeeee INSTALLATION PROCEDURES ..........0000000000beeeeeeeeeeeeeeeeeeees VOLTAGE CHANGEOVER INSTRUCTIONS ..........06000000eesssseeeeeee KT 76A/78A INSTALLATION MOLEX CONNECTOR ASSEMBLY PROCEDURE ..........- SOc KACO INSTALCATION Wu unU EEL UEEL Mua eae LOCATION CONSIDERATIONS .......... See ES EM aae OPERATION NORMAL OPERATION .....--.---...2208 0002 Revision, Nov. 1996 MMKT76AR6.D0C. 24 2-4 21 a4 PageiBENDIX/KING KT 764/780, TRANSPONDER LIST OF ILLUSTRATIONS FIGURE 2-1 CRIMPING TOOL (SHEET 1) ..... 2-4 FIGURE 2-1 CRIMPING TOOL (SHEET 2) 2-5 FIGURE 2-1 CRIMPING TOOL (SHEET 3) 2-6 FIGURE 2-2 KT 76A/78A INTERCONNECT DIAGRAM 2-7 FIGURE 2-3'DUAL TRANSPONDER INTERCONNECT . 2-9 FIGURE 2-4 KT 76A/78A OUTLINE AND MOUNTING DRAWING .. an FIGURE 2-5 KA 60 ANTENNA INSTALLATION DRAWING 2-15 FIGURE 2-6 VOLTAGE CHANGEOVER KIT ASSEMBLY 247 FIGURE 2-7 ACCEPTABLE CABLE CONNECTIONS DRAWING (SHEET 1) . 2-18 FIGURE 2-7 ACCEPTABLE CABLE CONNECTIONS DRAWING (SHEET 2) . 2-19 FIGURE 2-7 ACCEPTABLE CABLE CONNECTIONS DRAWING (SHEET 3) . 2-20 FIGURE 2-7 ACCEPTABLE CABLE CONNECTIONS DRAWING (SHEET 4) . 2-21 FIGURE 3-1 KT 76A/78A TRANSPONDER CONTROLS . 3-2 Revision 6, Nov. 1996 Pageiii MMKT76AR6.D0C.BENDIX/KING “KT 76A/78A TRANSPONDER SECTION! GENERAL INFORMATION me INTRODUCTION This manual contains information relative to the physical, mechanical, and electrical characteristics of the AlliedSignal KT 76A/78A. Information relative to the maintenance, alignment and procurement of replacement parts may be found in the KT 764/78A Maintenance/Overhaul Manual. 12 GENERAL DESCRIPTION The KT 76A/78A Transponders are radar beacon equipment designed to fulfil the role of the airborne beacon under the requirements of the Air Traffic Control! Radar Beacon System (ATCRBS).. The KT 76A/78A Transponders are capable of locating the user through the air traffic controller. Range and azimuth are established by the return from the transponder’s pulsed transmitter in reply to a routine interrogation from the ground radar site. The transponder reply is, a set of pulses, selected in number, and positioned in time, one with respect to the other (not entirely unlike telegraphy). Information is conveyed to the ground in this manner. An identity code number, selected at the front panel by the pilot is transmitted as a Mode A reply. Mode C, altitude reporting, is an additional capability designed into the transponder. However, in order to convey attitude information, the transponder must be used in conjunction with a reporting altimeter and ‘operated in “ALT" mode. An additional feature of the transponder and beacon system is the S.P.1. (Special Pulse identification). After pressing the ident button the transponder, when interrogated, willreply with a special pulse that will cause the associated pip on the controller's display to “bloom” effecting immediate recognition. 13 TECHNICAL CHARACTERISTICS SPECIFICATION: CHARACTERISTIC TSO COMPLIANCE: Crab ‘TSO CATEGORY: KT 76A -DAPBBBXXXXXX Class | KT 78A -DAPBBBXXXXXX Class II APPLICABLE DOCUMENTS: __| TSO C74b RTCA DO-138, TEMPERATURE RANGE: =15 @C to +55 GC for continuous operation HUMIDITY RANGE: Up to 95% at +50 @C (+122 @F) for 12 hours WEIGHT: See Figure 2=4 INSTALLATION SPACE: [See Figure 2-4 [POWER REQUIREMENTS: ___[14V, 1.8 A Max, 1.1 A standby ALTITUDE: KT 76A tested up to 35000 feet, which exceeds ‘TSO requirements. KT78A up to 15,000 feet. TRANSMITTER FREQUENCY: | 1080 MHz #3 MHz (with a coax cable SWR of 1.2 to 1 or less) TRANSMITTER POWER: KT 76A - 200 W peak minimum KT 78A - 113 W peak minimum (COOLING: Not required, but recommended Revision 6, Nov. 1996 MMKT76AR6.DOC. Page 1-1BENDIX/KING KT 76A/78A ‘TRANSPONDER ‘SPECIFICATION CHARACTERISTIC RECEIVER FREQUENCY: 1030 MHz RECEIVER SENSITIVITY: =74 dBm nominal ~72.d8m minimum for 90% reply MODE A CAPABILITY: 4096 identity codes plus SPI pulse MODE C CAPABILITY: ‘Accapis ARINC allitude digitizer output, reporting in 100 foot increments from -1000 feet up to 63,000 feet. ‘SIDE LOBE SUPPRESSION: [3 pulse ‘SUPPRESSION IN: ‘Accepts ARING Bilateral Ex: (LO <0.5V, High > 18V) KN 63/KDM 706/KTU 709 AlliedSignal Unilateral Ex: (LO <0.5 V, High > 8V KN 62AV/KN 64/KNS 80 1.4 UNITS AND ACCESSORIES SUPPLIED AlliedSignal KT 76A Transponder P/N 066-1062-00; P/N 066-1062-02 (Blue/White lighting); or P/N 068-1062-10, Crown Series; 14 V de or AlliedSignal KT 78A Transponder P/N 066-1062-01, 14 Vdc. Mounting Tray P/N 047-03898-0002 (supplied with each unit). B. AlliedSignal KT 76A/78A Installation Kit P/N 050-01577-0000/0001. Parts List as follows: |PART NUMBER: DESCRIPTION QUANTITY’ =0000 0001 (050-01577-0000 _|Inst Kit KT 76A/70 x (050-01577-0001 _|Inst Kit w/out Ant '006-01058-0004 | RF Connector Assy '030-00005-0000 [Conn BNC Coax RG 142 '030-00101-0002 [Panel Mount Plug (030-01094-0002_ {Conn Card Edge 12/24 030-01096-0000 [Key Polarizer '030-01107-0024 | Connector Term 24T (071-01174-0000 [Antenna DME/XPNOR: (089-02013-0037 | Nut Hex #6-32 (089-02353-0001 _ {Nut Clip #6-32 (089-05903-0007 ._ [Scr PHP #4-40 X 7/16 slat =le] =} =) =1 11 =P Page 1-2 Revision 6, Nov. 1996 MMKT76AR6.DOCBENDIXIKING 23 KT 7600788 ‘TRANSPONDER PARTNUMBER [DESCRIPTION QUANTITY (089-05907-0006 | Scr PHP #6-32 X 3/6 7 7 (089-06012-0008 [Scr PHP #6-32 X 1/2 6 6 (089-08027-0030 _ | Washer, Flat #6 q 7 (089-08094-0030 _|Washer, Flat 446 Al 7 q 7 7 7 7 7 7 i (089-08110-0034 | Lockwasher #6 (089-08168-0002 _| Washer, Wave (090-00019-0007 _ | Retaining Ring 436 (097-00031-0005 | Cable Clamp 312 15 ACCESSORIES REQUIRED BUT NOT SUPPLIED A. Voltage changeover Kit (14 to 28 V de) 050-01578-0000 Parts List as follows: PARTNUMBER [DESCRIPTION [QUANTITY “| -0000 [050-01578-0000__ [VOLT CHNGOVER KIT [047-04159-0001__ | SHIELD HEAT WiF [089-02009-0037__ [NUT HEX 4-40 [089-02016-0037__ [NUT HEX 10-32 (089-05878-0008 [SCR PHP 4-40X 1/2 (089-05991-0012 _ |SCRPHP 10-32 xa/4 (089-08112-0034 | WSHR SPLTLK (091-00009-0000 {GROMMET RUBBER 132-00113-0004__| RES WW 1055 W5% SPST SP Pepys] px B. Low Loss Antenna Installation Kit 050-01253-0002 Parts List as follows: PARTNUMBER | DESCRIPTION UANTITY -0002 (050-01253-0002__ [SC XPDRULOSS KIT x (006-01058-0004 | RF Connector Assy 1 (024-00072-0000 [CA Coax Low Loss 210 in. /030-00102-0001 [Connector RF 1 [030-00435-0000___ [Connector Ant BNC 1 Revision 6, Nov. 1996 MMKT76AR6.DOG Page 1-3BENDIX/KING KT 76A/78A TRANSPONDER: 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. The KT 76A or KT 78A may be operated for up to 30 days without a station license, after filing the FCC Form 404 and while awaiting the receipt of the station license, if a copy of the FCC Form 404 is kept in the aircraft. ‘This equipment has been type accepted by'the FCC and entered on their list of type accepted equipment as AlliedSignal KT 76A or AlliedSignal KT 78A and must be identified as AlliedSignal KT 76A or KT 78A on your FCC Form 404, Aircraft Radio Station License Application. Revision 6, Nov. 1996 Page 1-4 MMKT76AR6.DOCBENDIX/KING pci’ TRANSPONDER SECTION Il INSTALLATION ‘= GENERAL INFORMATION, Installation of the KT 76A/78A will differ according to equipment location and other factors, Cable harnesses will be fabricated by the installing agency to fit these various requirements. This section contains interconnect diagrams, mounting dimensions and other information pertaining to installation. fl ‘The conditions and tests required for TSO approval of this article are minimum performance standards. It is the responsibility of those desiring to install this article either on or within a specific type or class of aircraft to determine that the aircraft installation conditions are within TSO standards. The article may be installed only if further evaluation by the applicant documents an acceptable installation and is approved by the Administrator. 2.2 UNPACKING AND INSPECTING EQUIPMENT Exercise extreme care when unpacking the equipment. Make a visual inspection of the unit for evidence of damage incurred during shipment. If a claim for damage is to be made, save the shipping container to substantiate the claim. The claim should be promptly filed with the transportation company. It would be advisable to retain the container and packaging material after all equipment has been removed in the event that equipment storage or reshipment should become necessary. 23 INSTALLATION PROCEDURES, Listed below are factors and suggestions to consider before installing your KT 76A/78A. Close adherence to these suggestions will assure more satisfactory performance from your equipment. Also note the following instructions for voltage changeover in the KT 76A/78A and the caution concerning cooling considerations for the unit. The KT 76A/78A Interconnection Diagrams are depicted in (Figure 2-2) and (Figure 2-3). 24 VOLTAGE CHANGEOVER INSTRUCTIONS ‘The KT 76A/78A is designed to operate from 13.75 V dc input power. The panel lamps are internally wired to operate from either a 13.75 V de or 27.5 V de panel light system, depending on the connections at the rear connector. Details of this panel lamp option are shown on the Interconnect Diagram (Figure 2-2). No internal wiring changes are required. To operate the unit from 27.5 V de, a 10-ohm, 55-W resistor is installed in series with the power input pin. This resistor and associated hardware is included in the Voltage Changeover Kit, PIN 050-01578-0000 (refer to illustration Figure 2-6). Because of the heat it dissipates, this resistor should be mounted on the aircraft firewall or other structural member away from the avionics stack. 25 KT 76A/78A INSTALLATION ‘A. The KT 76A/78A are mounted rigidly in the aircraft panel. B. Avoid mounting close to any external heat source. If this cannot be accomplished, the following caution must be adhered to. Revision 6, Nov. 1996 MMKT76AR6.D0C Page 2-1BENDIX/KING KT 76A/78A ‘TRANSPONDER, CAUTION e THE GREATEST SINGLE CONTRIBUTOR TO INCREASED RELIABILITY OF ALL MODERN DAY AVIONICS IS TO LIMIT THE MAXIMUM OPERATING TEMPERATURE OF THE INDIVIDUAL UNITS WHETHER PANEL OR REMOTE MOUNTED. WHILE MODERN DAY INDIVIDUAL CIRCUIT DESIGNS CONSUME MUCH LESS ELECTRICAL ENERGY, THE WATTS PER CUBIC INCH DISSIPATED WITHIN AVIONICS UNITS REMAINS MUCH THE SAME BECAUSE.,OF THE HIGH DENSITY PACKAGING TECHNIQUES UTILIZED. CONSEQUENTLY, THE IMPORTANCE OF PROVIDING AVIONICS STACK COOLING IS ESSENTIAL TO ‘THE LIFE SPAN OF THE EQUIPMENT. WHILE EACH INDIVIDUAL, UNIT MAY NOT REQUIRE FORCED AIR COOLING, THE COMBINED HEAT LOAD OF SEVERAL UNITS OPERATING IN A TYPICAL AVIONICS STACK WILL SIGNIFICANTLY DEGRADE THE RELIABILITY OF THE AVIONICS IF PROVISIONS FOR STACK COOLING ARE NOT INCORPORATED IN THE INITIAL INSTALLATION. RECOMMENDATIONS ON STACK COOLING ARE CONTAINED IN ALLIEDSIGNAL INSTALLATION BULLETIN #55. FAILURE TO PROVIDE STACK COOLING WILL CERTAINLY LEAD TO INCREASED AVIONICS MAINTENANCE COSTS AND MAY VOID THE WARRANTY. e C. Allow adequate space for installation of cables and connectors. D. Secure the mounting tray P/N 047-03898-0002 to instrument panel per Figure 2-4. The rearward mounting holes must be attached to a structural member of the airframe by means. of support brackets. E. Looking at the bottom of unit, make sure the front lobe of the holddown device is in a vertical Position. This can be accomplished by using 3/32” allen wrench through the face plate. F. Slide unit into tray until front lobe touches mounting tray. G_Tum allen wrench clockwise until rear lobe engages with the tray slot. Continue tuming wrench clockwise until tight. CAUTION DO NOT OVERTIGHTEN LOCKING SCREW. H. For removal, turn 3/32" allen wrench counterclockwise until unit disengages from tray slot. Unit may then be removed. 26 MOLEX CONNECTOR ASSEMBLY PROCEDURE ‘The KT 764/78A uses a special connector (refer to Figure 2-1) that mates directly with the Printed e@ Circuit Board inside the unit. Assembly of the connector is as follows: Revision 6, Nov. 1996 Page 2-2 MMKT76AR6.DOCBENDDVKING ~ KT 76A78A. TRANSPONDER: ‘Solderiess Contact Terminal Assembly using Molex Crimper Refer to instructions in Figure 2-1. Solderless Contact Terminal Assembly using Pliers 1. Strip each wire 5/32" for contact terminal (P/N 030-01107-0030). (The last two digits of the contact terminal part number indicate the number of terminals furnished). 2. Tin the exposed conductor. 3. Using needle nose pliers, fold over each conductor tab in turn, onto the exposed conductor. When both tabs have been folded, firmly press the tabs against the conductor. 4. Repeat step 3 for insulator tabs. 5. Apply a small amount of solder (using minimum heat) to the conductorftab connection to assure a good electromechanical joint. Contact insertion into Molex Connector Housing 1. After the contact terminals have been installed on the wiring harness, the contact terminals can be inserted into the proper location in the connector housing (PIN 030-01094-0053). The terminal cannot be inserted upside down. Be sure to push the terminal all the way in, until a click can be felt or heard. 2. The self-locking feature can be tested by gently pulling on the wire. of Contact from Molex Connector the flat narrow blade of a Molex contact ejector tool, HT-1884 HI (P/N 047-05099-0001) under the contact on the mating side of the connector. By turning the connector upside down one can see the blade slide into the stop. 2. When the ejector is slid into place, the locking key of the contact is raised, allowing the contact to be removed by pulling moderately on the lead. 3. Neither the contact or position is damaged by removing a contact; however, the contact should be checked visually before reinstalling in connector, to be certain that retaining tab “A” extends as shown (see Figure 2-1) for retention in connector. Revision 6, Nov. 1996 MMKT76AR6.D0C. Page 2-3BENDIX/KING KT 76A/78A, TRANSPONDER SOLDERLESS CONTACT ‘TERMINAL PIN 030-01 107-00XX TABA INSULATOR CRIMP. CONDUCTOR CRIMP MOLEX PIN HT-1884 FIGURE 2-1 CRIMPING TOOL (Sheet 1 of 3) Revision 6, Nov. 1996 Page 2-4 MMKT76AR6.D0CBENDDVKING KT 76A/78A. TRANSPONDER Holding the hand crimpers as shown, release the. crimper’s ratchet pawl and open by squeezing tightly on the Aandi, and then releasing pressure” " awl and open by squeezing Vahey MOLEX P/N 6115, Close crimpers unt ratchet begins to engage. Then insert terminal into jaws from the back side. (See the following: Figure 2-1). For 24 to 30 AWG wire, i will be necessary to start the crimp In jaw A and then ‘complete in jaw Jaw |= TERMINAL WARE SIZE INSULATION RANGE ‘A_| 030011070030 | 1ato2sawe | .110 70.055 B | 030-01107.0030_| 2420 30awG | .055t0.030 WIRE STOP TERMINAL ‘Terminal is in the coirect position when insulation tabs are flush with outside face of crimp jaws. FIGURE 2-1 CRIMPING TOOL, (Sheet 2) Revision 6, Nov. 1996 MMKT76AR6.D0C. Page 2-5BENDIX/KING KT 76A/78A TRANSPONDER (Once the terminalis inthe comect postion, close the jaws geil unl he terminal is held loosely in plac Push the wie stop down sotha tess ‘snugly bend the contact portion ofthe terminal. ‘Sip off 1/8 ich ofthe wire ineuation and inaert the wire through the insulation tabs into he conductor tabs until the insltin his the conductor {nw fice or until the conductor touches the wire sop. wine sToP ‘CONDUCTOR JAWS ‘Squeeze the handles uni the crimp jaws close and the ache releases. ‘Stnighten the einai necessary, then release the plier grips and remove the crimped terminal {00 mich or oo litle pressor is needed to rlease the ermpers ratchet paw at the spanner wrench provided withthe tool can be used to loosen the lock mu, and ‘ounter-lockwiefor decreased presser. Once the ‘screwdriver ajsiment ee OPPOSITE SIDE FIGURE 2-1 CRIMPING TOOL (Sheet 3) Revision 6, Nov. 1996 Page 2-6 MMKT76AR6.DOC{ aan + 81/621 V3 | (Ong. No. 155-01234-0000, R-4) | MaZiLIOIG |p FIGURE 2-2 KT 76AV78A INTERCONNECT DIAGRAM Page2-7 Revision 6, Nov. 1996 MNKT76ARE DOCe-zebed 200 94vaLDINN 9651 ONS USNR, (24 ‘0000-¢9¢10-951 “oN “Sis .LOaNNOOWLNI UBONOdSNVUL TNd e-Z eInBLaw-eeteg soc suYSLDINN 9661 ¥ON BUDIENeL, (eu ‘0000-zv260-s61 oN “Bma) ‘NIMC ONLLNNON aN NINO WeLIVeL Ix 2 aUNDLE ‘wa0NCdsNveL, ‘veuvor 1 ONDIXIGN IE27. BENDIX/KING KT 76A/78A, TRANSPONDER: KA 60 INSTALLATION Refer to Figure 2-5 and Figure 2-7 for illustrations relating to the KA 60. A. Cc. Peel the backing off the antenna template and apply template to the aircraft at the desired mounting location. Drill or cut the proper size holes for mounting the antenna, then remove the template. Using the antenna as a stencil, draw a line around the base of the antenna that will come into contact with the aircraft. Then carefully scrape off the paint within the stenciled area. Lightly sand the bare metal with fine sandpaper to insure removal of all paint and protective coatings. Sand the inside area of the aircraft where the backing plate will be located to remove the chromate or other protective finish. Apply Aluminprep No. 33 (P/N 016-01127-0000) following the directions on the container to. cleanse the metal of any residue. Apply Alodine No. 1001 (P/N 016-01128-0000) following the directions on the container. Rivet the backing plate (P/N 047-04570-0000) into place, if required, Mount the antenna using #8 star washers (P/N 089-08017-0037) and 8-32 nuts (PIN 089-02148-0032) included with the antenna. RG-142 or equivatent coaxial cable is normally used on installations having a cable run of ten feet or less. For cable runs from nine to 17.5 feet, use low loss antenna installation kit (PIN 050-01253-0002). Inspect coaxial cable connector for proper center contact, then fasten it securely to the antenna. LOCATION CONSIDERATIONS, The antenna should be well removed from any projections, the engine(s) and propeller(s). It should also be well removed from landing gear doors, access doors, or other openings which will break the ground plane for the antenna. ‘The antenna should be mounted on a bottom surface of the aircraft and in a vertical position when the aircraft is in level fight. Avoid running other cables or wires near the antenna cable. Revision 6, Nov. 1996 MMKT76AR6.DOC Page 2-13BENDIX/KING KT 76A/78A TRANSPONDER: D. Avoid mounting the antenna within three (3) feet of the ADF sense antenna or any COMM antenna and six (6) feet from the transponder to DME antenna. . Where practical, plan the antenna location to keep cable lengths as short as possible, and avoid sharp bends in the cable to minimize the VSWR. F.__ To prevent AF interference, the antenna must by physically mounted a minimum distance of three feet from the KT 76A/78A. G. Aback-up plate should be used for added strength on thin-skinned aircraft. H. Theantenna should be kept clean. If left dirty (oil covered) the range of the Transponder may be affected. On pressurized aircraft, the antenna should be sealed using RTV (P/N 016-01082-0000) around the connector and mounting hardware. J. All antennas should be sealed around the outside for moisture protection. Revision 6, Nov. 1996 Page 2-14 MMKT76AR8.DOC900 94 yaLi3MM 9661 nN 9 Orso (es '0000-68250-51 ON “Sua ‘NUM NOUV TTVISMI VNNALNY 09 vot 8 3UNDIA si-zateg “SU3LANILN3D NI-Juv ( )S3S3HLNUVE NI SNOISN3WIG 00-wztI- 120 2 340N (ese) sae a f: fo 522 222) se (ose) oa (oaron 000% wvusvid LNOLNd 310H ‘ONLLNNOW i ! \ | = NDS 107 : T ‘ane onove (00-01s6-260BENDIX/KING KT 76A/78A TRANSPONDER 089-05991-0012 (2) > 3 ‘AIRCRAFT FIREWALL OR E} <091-00009-0000 (2)] ‘STRUCTURAL MEMBER gi 15878-0008 (2) 189-02009-0037 (2) 047-04159-0000 089-02016-0037 (2) il 089-08 112-0034 (2) 132-00113-0002 FIGURE 2-6 VOLTAGE CHANGEOVER KIT ASSEMBLY Revision 6, Nov. 1996 MMKT76AR6.DOC Page 2-17.BENDIX/KING KT 76A/78A, TRANSPONDER 45' to 9° MAX. ° USING CABLE P/N 024-00051-0060 UNIT CONNECTOR RG-400 P/N 030-00101-0002 ANTENNA CONNECTOR P/N 030-00005-0000 KT76A4/780 USING CABLE TIMES P/N AAB096 875° TO 17.5" Max} UNIT CONNECTOR P/N 030-00101-0002 ANTENNA CONNECTOR P/N 030-6092-0000 KT760/780 FIGURE 2-7 ACCEPTABLE CABLE CONNECTIONS DRAWING (Sheet 1 of 4) Revision 6, Nov. 1996 Page 2-18 MMKT76AR6.D0CBENDIX/KING KT 76A/7 TRANSPONDER 125° to 25° MAX. USING CABLE P/N 024-00072-0000 ECS P/N 311601 Ct cone a P/N 030-00102-0001 ANTENNA CONNECTOR P/N 030-00435-0000 KT76A/78A USING CABLE, P/N 024-00071-0000 ECS P/N 311201 UNIT CONNECTOR P/N 030-00101-0002 = 1) \cueune CONNECTOR P/N 030-00434-6000 P/N 030-00138-0000 P/N 024~00051-0060 RG-400 KT760/78A FIGURE 2-7 ACCEPTABLE CABLE CONNECTIONS DRAWING (Sheet 2) Revision 6, Nov. 1996 MMKT76AR6.DOC. Page 2-19BENDIX/KING KT 76A78A TRANSPONDER SHOULDER TEFLON aa rd D WASHER INSULATOR METAL NUT SHOULDER: coNtACT PLUG BODY WASHER Poce nut ond goskel, with “V° groove toward a ieee Teens aca ioce we TI ee | oe Comb out braid and fold out. Cut cable electric to dimension shown. Tin’ center Lt =a conductor, using minimum amount of heat i Put braid mes forward ond toper toward _ ‘center conductor. Ploce clome over braid =| e|e a Feud beck bro wires os shown, tim to proper length end arm om damp ot sow. Sip mle beter wshar od aon stor washer et cele cdc end tan nn Set U canes lo center conductor, ovidag excesie heat which fal inh swe cable eck. Sip tele inter oer contac. Insert prepored cable termination into connector body. Moke sure shorp edge of clomp sects propery in gasket. Tighten’ nut. FIGURE 2-7 ACCEPTABLE CABLE CONNECTIONS DRAWING (Sheet 3) Revision 6, Nov. 1996 Page 2-20 MMKT76AR6.D0C‘ewe oo Ta : (iveys) e ‘DNUNWG SNOLLOBNNOD SAV sTaVIdaOOV /-2 aNDL i=, HB HA e “itor Riso aw" | i Tae ein 7 44 nmons sv zones aw ails 79 509BENDIX/KING KT 76A/78A, TRANSPONDER SECTION Ill OPERATION 34 NORMAL OPERATION The transponder is turned on by rotating the function selector from the off position to any other position. NOTE The KT 76A/78A should be turned off before starting aircraft engine(s). After being turned on, there is a 45 second delay before the unit becomes functional. This is to permit the transmitter tube to warm up and stabilize. Usually the function switch will be rotated to the “standby” position, however, any operative position will initiate the time delay turn on. Any time that the function switch is in the “ON” or "ALT" position the transponder becomes an active part of the beacon system. It is undesirable from a systems view point to be operating (function ssalactor in either of these positions) while on the ground, taxiing, or running up at a terminal with a co-located beacon interrogator. Attention should be paid to the code selected on the control head. The selected code should be in accordance with instructions for IFR fight or rules applicable to transponder utilization for VFR flight. NOTE Never activate the transponder with either Code 0000, 7700 or 7777 selected on the control head. Code 7700 is selected for emergencies. During normal transponder operation, a flashing lamp is an indication of a transmitted reply. An interrogation will normally be at 10-15 second intervals. Lamp flashes within this interval may be from noise, a second or third interrogator, or from side lobes from interrogators without side lobe suppression. “ON" function will be the customary mode of operation. If an altitude digitizer is part of the system then “ALT" function will be selected if altitude reporting is requested by traffic control. “ALT” function enables the transponder to encode an altitude reply. The IDENT feature is used at the request of the traffic controller. The IDENT button is depressed momentarily and then released. A memory holds the IDENT reply for an interval to assure the proper reply for at least one radar sweep. This memory also tums the reply lamp on steady as an indication of the ident function. NOTE Consult the airportffacility directory section of the Airman's Information Manual for the location of radar beacons. Air traffic control radar beacon system (ATCRBS) Description: AIM, Section |. Radar beacon proceudres: AIM, Section Il. Revision 6, Nov. 1996 MMKT76AR6.DOC. Page 3-1BENDIX/KING KT 76/784 TRANSPONDER FUNCTION SELECTOR CODE SELECTOR KNOBS REPLY LAMP. IDENT BUTTON FUNCTION SELECTOR CODE SELECTOR KNOBS. REPLY LAMP IDENT BUTTON FIGURE 3-1 KT 76A/78A TRANSPONDER CONTROLS, Revision 6, Nov. 1996 Page 3-2 MMKT76AR6.D0C