[pskmail] Re: APRS Position Problem

  • From: Ian Wade G3NRW <g3nrw@xxxxxxxxxxx>
  • To: pskmail@xxxxxxxxxxxxx
  • Date: Tue, 28 Sep 2010 20:20:50 +0100

From: ve7cus@xxxxxxx
Date: Tue, 28 Sep 2010   Time: 09:32:03


Here are the two outputs with the comp button on and off.

<SOH>00uVE7CUS:6 .Q$-A%H  y jpskmail 0.6.0c80DB<EOT>

<SOH>00uVE7CUS:26 !4904.13N/12305.40Wyjpskmail 0.6.0c05F7<EOT>

Darrel, VE7CUS

Hi Darrel

The compressed string (the first one above) doesn't make sense, almost certainly because it may contain non-printable ASCII characters -- one of the features of compressed format.

Can you tell me what the characters are between the colon (:) and "jpskmail", in hexadecimal. For example, at the moment they look like:

0x36  6
0x20  space
0x2e  .
0x51  Q
0x24  $
0x2d  -
0x41  A
0x25  %
0x48  H
0x20  space
0x20  space
0x79  y
0x20  space

I suspect (some of) the spaces aren't really spaces, and there may be some other characters that don't appear here at all.

In particular, I suspect the first character after the colon (preceding the "6") is actually the non-printing 0x1c (or possibly 0x1d), which is the APRS Data Type Identifier for compressed data.

Ian, G3NRW

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