Packet Radio's most complete Transceiver to TNC interface drawings, diagrams, and illustrations on the worldwide internet. These pages are intended to support the Packet Radio users and the AX.25 digital Amateur Radio Operator. Many long hours and much research is being spent to insure that most, if not all, these interface drawings are correct. Please use caution as you interface your TNC and transceiver. The caveat is; I am not responsible for mistakes or omissions. It is my wish that this reference material is helpful to all who use it and that it promotes a greater interest in this fun-filled hobby of PacketRadio.

Happy Packeting, es 73 de Glynn E. ''Buck'' Rogers Sr.

NOTE: BEFORE PROCEEDING FURTHER, read the following as it may prove helpful later.

The mic and TNC connections pictured on these pages illustrate the connections you will encounter with most radio to TNC interfaces. Most manufacturers will apply the same pin connection scheme to their radios when using the same type mic (number of pins) connector. For instance, most all models of ALINCO transceivers which have 8 pin Mic connectors will use the same pin connections; e.g. Pin 1 = AFSK IN, Pin 2 = PTT, Pin 8 = Ground for PTT, and Pin 7 = Shield. Receive audio is usually taken from the External speaker (in most transceivers, a 3.5 millimeter plug).

One very important reminder; For best TNC DCD performance, your transceiver volume should be set between the 9 and 11 o'clock position. I've found that too little audio (below the 9:00 O'clock setting), is not good. Likewise, too much receive audio will create distortion and will cause inconsistent decoding of Packet data. Knowing this, we soon understand that an optimum setting for the volume control is at the ten o'clock position. The Squelch may be set in a similar manner, usually aroung 10 or 11 o'clock position... unless you have local CPU noise, whereupon, you have to govern your settings accordingly.

Happy Packeting, es 73 de Glynn E. ''Buck'' Rogers Sr.
CAVEAT!!!!! Interfaces shown on these pages, are tried and were successful in on-the-air-operation.... HOWEVER!...I am NOT responsible for errors, ommissions, or mistakes! PROCEED AT YOUR OWN RISK!
MAIN PAGE (one)
"TNC to Transceiver Wiring Index"
In the listing below, Point to, and Click On an interface description to view the related diagram.
    PC and compatibles, TRS CoCo's, and Commodore "Serial and TTL Comport interfacing"

  1. RS232 DB25 to DB25 and DE9 to DE9 TNC to Computer Interface Cable
  2. Flow diargam of the TNC to Radio Interface
  3. Pictorial of a Computer to TNC Interface
  4. TTL TNC port to Commodore 64 Interface
  5. Tandy / RadioShack Color Computer Serial port to TNC Interface

    ALINCO transceivers to various TNC

  6. ALINCO DJ 120 to MFJ or PacComm (TNC2)
  7. The Kantronics (HF port), KAM/Plus, to the ALINCO DX-70TH.
  8. The Kantronics (9 pin VHF port), KAM/Plus, KPC3, KPC9612 to the ALINCO DR-150
  9. ALINCO 8 PIN MIC connectors to TNC2 Interface
  10. AEA PK-232 to ALINCO DR-590 Twin-Band
  11. Alinco DR-590 to AEA PK-232
  12. Alinco DJ-F1 HandHeld to MFJ-1270B/C, AEA PK-900 or PacComm Tiny2
  13. Alinco 8 pin Mic I/O to BayCom
  14. Alinco 8 pin Mic I/O to BayPac BP-2 and BP-2M

    AZDEN transceivers to various TNC

  15. Early AZDEN 2000..etc with 12 pin Mic to Kantronics KAM, KPC-3, and KPC-9612 (VHF port).
  16. AZDEN 4000 w/8 PIN Mic to Kantronics KAM (VHF port), KPC-3, and KPC-9612 (1200 baud port).
  17. AZDEN 5000, 6000, and early 7000 TNC Interface
  18. AZDEN PCS-9600D to MFJ-1270CQ/Turbo TNC. This combo operates both 1200 and 9600 bauds.
  19. Azden 4000 interfaced to the PacComm "Handi-Packet" TNC.
  20. AZDEN UHF 9600 Baud-Ready PCS-9600D interfaced to the Kantronics KPC-9612 TNC

    ERICSSON/GE transceivers to various TNC

  21. ERICSSON/GE Phoenix to MFJ-1270CQ/Turbo TNC
  22. ERICSSON/GE MVP to TNC Interface

    ICOM transceivers to various TNC

  23. ICOM Transceivers and Hand-Held to TNC2.
  24. Icom IC 22A to KPC-3 and Kantrinics KAM & KPC-9612 VHF ports.
  25. ICOM HandHelds with 2.5mm and 3.5mm MIC/ExtSpkr jacks to KANTRONICS KPC/KAM
  26. ICOM IC-207 to MFJ-1270CQ Turbo (Both 1200 and 9600 baud port interface).
  27. ICOM IC-746, 756, and 706H's Accessory (ACC1) port (for HF use) to MFJ-1278 MultiMode
  28. ICOM IC-706 to RJ-45 Mic port for 1200 baud operation.
  29. ICOM IC-2100 to MFJ-1270C. 1200 baud I/O.
  30. ICOM IC-281 to TimeWave/AEA PK-96 (two ports, 1200 and 9600 baud)
  31. PK-88 (8 pin) to ICOM 8 PIN MIC
  32. ICOMs with 8 pin MIC connectors to TNC2 clones.
  33. ICOM 8 pin MIC to KANTRONICS KPC and KAM.

    KDK transceivers to various TNC

  34. Special PTT circuit for the KDK-240.
  35. PacComm, MFJ-1270,74,78, or the AEA PK-96 TNC to KDK-2033
  36. Kantronics KPC-3/KPC3 Plus to KDK 4 pin MIC I/O.

    KENWOOD transceivers to various TNC

  37. Interfacing the NEW Kenwood TH-D7A for Packet and APRS use. It has a built-in 1200 and 9600 baud TNC.
  38. Once upon a time, there was a TAPR TNC"1"... and I interfaced it to a Kenwood 4 pin (7400).
  39. Kenwood 8 pin Mic/Radios and Hand-Helds to TNC
  40. Kenwood RJ-45 Mic connector to TNC Interface
  41. HF Kenwood ACCY2 to Kantronics All Mode
  42. SIX (6) Pin Kenwood Mics to Kantronics Packet Communicators (KPC) DE9 connectors.
  43. Kenwood TM-251, Six (6) pin "MINI DIN" 733, and V7A to MFJ-1270CQ Turbo.
  44. KENWOOD TS-450, 950, and KW ACCY2 to AEA PK-900
  45. KENWOOD 2700 series (8 pin) to DRSI PacketAdaptor *PCA

    MIDLAND transceivers to various TNC

  46. Midland transceivers (13-510, etc) with 4 Pin Mic connections to TNC

    MoToRoLa transceivers to various TNC

  47. MICOR to TNC Interface box is a quick and easy
    RadioShack transceivers to various TNC

  48. Radio Shack RJ-45 to Kantronics KPCs & KAM
  49. Radio Shack hand-held transceivers to TNC2 Interface

  50. Radio Shack HandHelds with 2.5mm and 3.5mm MIC/ExtSpkr jacks to KANTRONICS KPC/KAM
  51. RJ-45 MIC I/O of the Radio Shack VHF Mobile to TNC Interface

    Ten-Tec transceivers to various TNC

  52. Ten-Tec transceivers with 4 Pin Mic connectors to TNC Interface
  53. Ten-Tec transceivers with quarter inch (1/4") Mic connectors TNC Interface

    STANDARD transceivers to various TNC

  54. STANDARD HandHeld transceiver to TNC Interface

    UNIDEN transceivers to various TNC

  55. UNIDEN HR-2510 to TNC2 Interface (1200 Baud is legal above 28 MHz).


    REGENCY transceivers to various TNC

  56. TNC to Regency HR2A/B (An oldie, but goodie)

    KACHINA transceivers to various TNC

  57. KACHINA 505-DSP, HF Transceiver to MFJ-1278"B"

    Kantronics transceivers to various TNC

  58. Kantronics KPC-9612 Plus to Kantronics D-410 transceiver.
  59. Kantronics DVR 2-2 transceiver DataPort and Mic I/O.

    YAESU transceivers to various TNC

  60. YAESU FT-207, FT-208, and WILSON MK-II, MK-IV, WE-800 to KANTRONICS KPC/KAM
  61. YAESU FT-Series with 2.5mm and 3.5mm MIC/ExtSpkr jacks to KANTRONICS KPC/KAM
  62. YAESU 8 pin mic connections to TNC2
  63. TNC2 Interface to YAESU hand-held transceivers
  64. YAESU mobile transceivers to TNC Interface
  65. YAESU 757 to AEA/TimeWave DSP-2232 MultiMode DSP Controller
  66. YAESU FT-10 and FT-20 VHF and UHF Hand-Held transceivers to 5 pin DIN TNC.
  67. YAESU FT-2500 2 Meter transceiver RJ-45 MIC port to 5 pin DIN TNC
  68. YAESU FT-2500 2 Meter transceiver RJ-45 MIC port to de9 port of KAM & KPC
  69. YAESU FT-3000M 1200 and 9600 baud interface to MFJ-1270CQ Turbo, 5 pin DIN TNC.
  70. YAESU FT-51R Dual Band HandHeld transceiver to 5 pin DIN TNC.
  71. YAESU FT-8000R Dual Band Mobile transceiver 1200 and 9600 baud interface to MFJ-1270CQ Turbo.
  72. YAESU FT-8100R Dual Band Mobile transceiver 1200 and 9600 baud interface to MFJ-1270CQ Turbo.
  73. YAESU VX-1R "Ultra-Compact" Dual-Band HandHeld transceiver to 5 pin DIN TNC.
  74. YAESU FT-847 HF/VHF/UHF multimode (1200 & 9600 baud) transceiver to the MFJ-1278B MultiMode data controller.
  75. YAESU FT-920 HF - 56 MHz transceiver to TNC with 5 pin DIN port.
    ''NEW'' November 1998 !
  76. CLICK HERE to view my library of TNC to Transceiver cables and drawings!
    The cables I have illustrated on Page two are available 'READY-MADE' from MFJ ENTERPRISES INC; Orderline is 1.800.647.1800

Don't stop here! There's more, much more.

CLICK HERE to view many more TNC to RADIO interface drawings... ALL IN ONE PAGE!
CLICK HERE to view TNC to COMPUTER interface drawings... ALL IN ONE PAGE!
AND THERE ARE STILL MORE BELOW!


The following interface connections are associated with TNCees which use the popular five (5) pin DIN radio port.

See the connector key below this table.

Transceiver
Mfg		 Radio
Connector		 TX AFSK
Pin 1		 Ground/Shield
Pin 2		 Push-To-Talk
Pin 3		 Receive AF
Pin 4		 Ext CD
Pin 5
ADI 8PIN Pin 1 Pin 8 Pin 2 Ext Spkr
Alinco 8 PIN PIN 1 PIN 8 PIN 2 Ext Spkr
Azden 6 PIN mini DIN PIN 1 PIN 2 PIN 3 PIN 5 Ext CD PIN 6
Azden 8 PIN PIN 1 PIN 2 PIN 7 Ext Spkr
Drake 4 PIN PIN 1 PIN 3 / 4 PIN 2 Ext Spkr
ERICSSON/GE MVP 4 PIN PIN 2 PIN 1 PIN 3 PIN 4
Icom 4 PIN PIN 1 PIN 4 PIN 2 Ext Spkr
Icom 8 PIN PIN 1 PIN 6 PIN 5 PIN 8
Icom RJ-45 PIN 6 PIN 7 PIN 4 PIN 3
Icom 8 PIN DIN (Acc) PIN 4 PIN 2 PIN 3 PIN 5 Ext CD PIN 6
Icom 13 PIN DIN (Acc) Pin 11 Pin 2 Pin 3 Pin 12 Ext CD PIN 13
Kachina 505 DB25/ACC1 PIN 17 PIN 14 PIN 18 PIN 16
KDK 6 PIN PIN 5 PIN 6 PIN 4 Ext Spkr
Kenwood 4 PIN PIN 1 PIN 4 PIN 2 Ext Spkr
Kenwood 6 PIN PIN 1 PIN 6 PIN 2 Ext Spkr
Kenwood 6 PIN mini DIN PIN 1 PIN 2 PIN 3 PIN 5 Ext CD PIN 6
Kenwood 8 PIN PIN 1 PIN 8 / 7 PIN 2 Ext Spkr
Kenwood RJ-45 PIN 3 PIN 6 PIN 5 Pin 2
Kenwood 13 PIN DIN PIN 11 PIN 4 PIN 9 Pin 3
Midland 4 PIN PIN 1 PIN 2 PIN 4 Ext Spkr
Radio Shack RJ-45 PIN 5 PIN 2 PIN 6 Ext Spkr
Regency HR-2 1/4" Stereo Tip Sleeve Ring Ext Spkr
Ten-Tec 1/4" Stereo Ring Sleeve Tip Ext Spkr
Ten-Tec 4 PIN PIN 1 PIN 2 PIN 3 Ext Spkr
Uniden 5 PIN PIN 1 PIN 2 PIN 3 Ext Spkr
Yaesu 5 PIN DIN PIN 1 PIN 2 PIN 3 PIN 4 Ext CD PIN 5
Yaesu 6 PIN mini DIN PIN 1 PIN 2 PIN 3 PIN 5 Ext CD PIN 6
Yaesu 8 PIN PIN 8 PIN 7 PIN 6 Ext Spkr

INDEX OF CONNECTORS
(CAUTION, some connectors will vary in pin number assignment)

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TNX es 73 de Buck Rogers K4ABT

ALL MATERIAL, TEXT AND GRAPHICS ON THESE PAGES ARE ©COPYRIGHT of, and by, G. E. "Buck" ROGERS Sr, K4ABT. ALL RIGHTS ARE RESERVED. 1986-1998
Reproduction in any form must have the written permission of the author.

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