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s hardware <dg8fz @ww $913091dg8fz #0 15-Pin-ACC-'Modem'
a small connetor usable for external modems
normaly it's used as IBM Monitor-connector, but my usage is :
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\ /
5 4 3 2 1 <- to TRX
\ /
10 9 8 7 6 <- Signal-GND
\ /
15 14 13 12 11 <- from TRX
\ /
-------------------- <- Protective-Ground
the TRX is female.
Pin + Funtion :
5 permament + 12 V (may be used as TRX-Powersupply (only QRP-TRX))
10 0 V
15 + 12 V switched by TRX (Modem-Powersupply)
4 PTT (swiched to GND for transmission) (no TTL)
14 DCD (swiched to GND if SQL is open) (no TTL)
3 FM-Varaktor (modulator-input) ! 2 SSB-Modulator
9 FM-GND ! 8 SSB-GND
13 FM-Demodulator (demodulator-output) ! 12 SSB-Demodulator
1 IF-Out
7 IF-GND = IF-Switch (if connected to GND: IF-IO is used)
11 IF-IN
6 up- ( = GND ) / down-control ( = 470 Ohm to GND )
73's de karl dg8fz @ db0sao.deu.eu 9.mar.91
***end
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