[aprssig] Re: APRS Standard Connectors?
Chris Kantarjiev
cak at dimebank.com
Wed Nov 30 12:23:59 EST 2005
>
> Many GPS devices expect to be plugged into
> a PC, so they have a DB-9 series female on
> the end of their cables. So the standard APRS
> GPS connector could be:
>
> 1 (DCD)
> 2 Serial GPS data to PC
> 3 Serial data to GPS
> 4 Power 12 volts
> 5 GROUND
> 6 (DSR)
> 7 (RTS) Suggested 5 Volts Power?
> 8 (CTS)
> 9 (???)
>
> Notice that Chris suggested pin 8 for 5V power,
> but since the PC is the DTE and the GPS plugged
> into the serial port is the DCE, then I think the
> PC should output the 5 volts on pin 7 which is
> an output from the PC and not pin 8 which is
> normally an input to the PC. Did I get that right?
Works for me. I've never been able to get the story straight about how
RS-232 is represented on a DB-9. I don't mind adjusting a couple of
connectors to get caught up to the latest standard.
It would be really nice if the next rev of the OT/TT family
would implement it, especially since they're starting to
provide +5V for GPS units!
73 de chris K6DBG
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