[aprssig] KPC-3+ and power mod?

Wes Johnston aprs at kd4rdb.com
Mon Jul 11 19:24:53 CDT 2005

Yep, if your GPS V can take 12v, the kpc3 can pass enough to power it. 
If you need 5v, you will have to provide your own regulator.  I suspect
it's just a matter of connecting the GPS power pin to radio port pin7 to
supply 12v, data out from GPS to pin 2 and ground to pin 6 (all on radio
port).  Probably best if you just make a Y cable for the radio port 1
leg going to the GPS , 1 leg going to the radio.


Earl Needham wrote:

> At 04:15 PM 7/3/2005, Wes Johnston wrote:
>> Yes, there is a jumper setting to select between pin 7 on radio port and
>> pin 13 on serial port... of course I just removed the jumper and
>> soldered both options ON.
>> J6 needs to be center & 2, J7 needs to be center and 1, but I soldered
>> all 3 pins of j7 together.
>> Important difference.... kpc3 uses pin 25, kpc3plus uses pin 13.
>> Probably important if you plan to use the same serial cable on
>> several TNCs.
>         Just got a chance to investigate this further -- the mod is
> listed as a way to power the KPC-3+.  Is that particular part of the
> board stout enough to power outboard items?  I want to power a HamHUD
> and a GPS-V.
>         Anybody know?
>         Thanks,
>         Earl
> Earl Needham, KD5XB, Clovis, New Mexico DM84jk
> http://kd5xb-2.no-ip.info
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