[aprssig] KPC3+

Matt Werner kb0kqa at gmail.com
Sat Feb 4 13:32:40 EST 2006


The computer doesn't provide 12V however, and whatever voltages are
provided by the serial port are likely to be extremely low current.

On 2/4/06, Jim <kg6ows at clearwire.net> wrote:
> easy test. unplug walwart & see if tnc is powered with computer
> ----- Original Message -----
> From: "Matt Werner" <kb0kqa at gmail.com>
> To: "TAPR APRS Mailing List" <aprssig at lists.tapr.org>
> Sent: Saturday, February 04, 2006 9:50 AM
> Subject: Re: [aprssig] KPC3+
>
>
> > http://www.kantronics.com/documents/kpc3ppinout.pdf
> >
> > Page 2, pin 13.
> >
> > EXT-IN can be jumpered to supply power to the TNC.  Power can go both
> > ways however, so shorting this pin, if jumpered correctly, will short
> > the walwart (if that's what you're using).
> >
> > See J7 on the top of that page.
> >
> > 73 - Matt
> > KB0KQA
> >
> > On 2/4/06, K2DLB <k2dlb at stny.rr.com> wrote:
> >> Matt
> >>     I don't find anything in the jumper listings for +12v output to
> >> computer
> >>
> >> Brian
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