[Trlog] Icom 706MKIIG interface for TR

[Sibilja Mirko]

Hi John,

try to take +5 V to power transistors from Pin 14 at LPT port instead.

73!  Mirko, S57AD
----- Original Message -----
From: John Unger <w4au at contesting.com>
To: <trlog at contesting.com>
Sent: Monday, March 03, 2003 5:28 PM
Subject: [Trlog] Icom 706MKIIG interface for TR


> I am trying to put together an interface for a IC706 to use with TR. I
> would like to be able to use one serial port for both the frequency read
> out and keying. I am trying to use the serial port voltages to power the
> transistors in the frequency read out part of the interface.
>
> The interface works FB without the serial port being set up for keying in
> the logcfg.dat file. However, when the serial port keying is enabled in TR
> it appears as if all the pins with voltage on the serial port connector
are
> pulled low, and the net effect is that the frequency read out only works
> when sending CW!
>
> I've tried using pin 7 (9-pin connector) with PTT disabled in TR, but the
> voltage there still seems to disappear.
>
> Has anyone gotten both functions to work from a single serial port, or
> should I just give up and use the parallel port for keying?
>
> tnx es 73 - John, W4AU
>
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