Hello Marty,
My old friend and the person responsible for recommending Writelog to me.
DTR Pin 1 on DB9 connector, Pin 8 on older DB25 serial connector.
RTS Pin 7 on DB9 connector, Pin 4 on older DB25 serial connector.
GND Pin 5 on DB9 connector, Pin 7 on older DB25 serial connector.
Hope this helps.
Dave KG0US
Marty Tippin wrote:
> Anyone know of a good way to split out the DTR (or RTS) signals on the rig
> control serial port? My FT-920 doesn't support PTT on the rig port, but if
> I could get to DTR or RTS on that same serial cable, I could route those
> through an optoisolator to drive the external PTT on the rig. I suppose
> there must be some sort of "breakout box" you can put in line with the
> cable but not sure what it is or who carries it.
>
> Any ideas short of building my own custom cable?
>
> -Marty NW0L
> martyt@pobox.com
>
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