[aprssig] Need Help Digipeating Programming for D7

[Curt, WE7U]

On Wed, 30 May 2007 gerheim at cox.net wrote:

> I'm looking into writing a program for the HP-50G graphing calculator which will permit digipeating with a D7.  I have little experience writing digipeat code or with KISS mode.  This is for wilderness travel where a PC may not be available.
>
> What I know so far:
>
> The D7 seems to go into KISS mode.  When I tell it "KISS ON", stuff changes.  (Gotta start small.)
>
> The calculator can send binary or char down the serial cable.  Even unprintable char's.
>
> I'm not sure how my callsign will be imbedded in the outgoing signal.  The FCC has this rule...   ;-)
>
> Where can I go for references?  I tried googling, but you guys may have your fingers right on the pulse.

Look for "mike chepponis kiss" via Google.

Be careful of the D7A in KISS mode.  It can lock up if it gets too
much too fast from probably either side (radio or serial port), or
if the packets are too long, for instance 1024-byte TCP/IP packets.
The KISS buffers are less than adequate in the TH-D7A.

--
Curt, WE7U.   APRS Client Comparisons: http://www.eskimo.com/~archer
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