KAM_WIRE.TXT                                  N8FC, Jan. 12, 1992


 --- Help with wiring KAM To RS-232 and ICOM 8-Pin ---

Apparently, who ever wrote the Installation and Operations
Manuals for the KAM had no knowledge of flow charting or
schematic diagrams. After spending all day reading the Install-
ation Manual <and gritting my teeth>, I got out my volt-ohm meter
and did some lead-pin checking with the DB-9 plugged into the KAM
<some pins are jumpered internally>. Also, I took the DB-9 apart
and took a look inside.

I hope the following deciphered information and schematics are
helpful. But, be very careful - the insulation on the wires have
a tendency to melt when you solder them. Real quality stuff . . .

The following parts are available from Radio Shack:

    274-025    8-Pin MIC Plug
    276-1548   DB-25 Female
    276-1536   Metalized Hood


------------- Kantronics KAM to Icom 2400A or 229H -------------


      DB-9       Color      Function          8-pin Mic Plug

*   1 AFSK OUT    Wht      Audio line         1 MIC Input
    2 XCD         Yel      Squelch              n/c (cut Yel)
*   3 PTT         Brn      Push to Talk       5 PTT
    4 Audio       Blu      Same as 5            n/c (cut Blu)
*   5 Audio       Pur      Audio plug tip    ^8 AF Out
*   6 GND         Bare     Shield             7 MIC Ground
    7 +12 VDC     Red      Alternate Pwr        n/c (cut Red)
    8 GND         Grn      Same as 6          6 PTT Ground (Join)
    9 GND         Blk      Same as 6          6 PTT Ground (both)
    Already Cut   Org      Not Used             n/c (cut Orange)

    * Must have for HostMaster II Software
    ^ Wire pin 8 of Mic Plug if not using speaker jack on radio
      (ok to use both at same time)


-------------------Icom 8-Pin Audio Plug------------------------


                      Purple (5 AF Out) [Or use 1/8 Audio Plug]
                     ÚÄÄÄÄÄÄÄÄ
 WHT (1 MIC IN)      ³
         ÄÄÄÄÄÄÄÄ1   ³   7ÄÄÄÄÄÄÄÄÄ  Shield (MIC Ground)
                     ³
       n/c ÄÄÄÄ2     8     6ÄÄÄÄÄÄÄÄ GRN/BLK (8,9 PTT Ground)

         n/c ÄÄÄÄ3       5ÄÄÄÄÄÄÄÄ BRN (3 PTT)
                     4
                     ³
                     ÀÄÄÄ n/c


----------- DB-9 Connector when plugged into KAM ---------------


               WHT AFSKÄÄÄÄÄÄ1
                                6ÄÄÄÂÄÄÄ Shield
                YEL XCDÄÄÄÄÄÄ2      ³
                                7ÄÄijÄÄÄ +12 VDC
                BRN PTTÄÄÄÄÄÄ3      ³
                                8ÄÄÄ´
              BLU AUDIOÄÄÂÄÄÄ4      ³
                         ³      9ÄÄÄ´
                         ÃÄÄÄ5      ³
                 ÚÄÄÄÄÄ¿ ³          ³
           oÄÄÄÄÄÅÄÄÄÄÄÅÄÙ          ³
                 ÀÄÄÄÄÄÁÄÄÄÄÄÄÄÄÄÄÄÄÙ
                 Audio Plug


-------------- Kantronics KAM to RS-232 ------------------------


      Shield  Bare ÄÄÄÄÄÄ¿
                         ³
            * GND  BLK ÄÄÁÄÄÄ1               SG - Signal Ground
                                14
            * TXD  WHT ÄÄÄÄÄÄ2              TXD - Xmit Data
                                15
            * RXD  RED ÄÄÄÄÄÄ3              RXD - Recv Data
                                16
            * RTS  GRN ÄÄÄÄÄÄ4              RTS - Request To Send
                                17
            * CTS  BRN ÄÄÄÄÄÄ5              CTS - Clear To Send
                                18
              DSR  BLU ÄÄÄÄÄÄ6              DSR - Data Set Ready
                                19
            * GND  ORG ÄÄÄÄÄÄ7               SG - Signal Ground
                                20ÄÄ¿
              DCD  YEL ÄÄÄÄÄÄ8      ³       DCD - Data Carrier
                                    ³               Detect
           Purple  DTR ÄÄÄÄÄÄÄÄÄÄÄÄÄÙ       DTR - Data Term Ready

    * Must have for HostMaster II


------ End of File ---- Written by R. Jepsen, N8FC -------------