[aprssig] Kenwood D700 Internal TNC Amazingly Mediocre!
bruninga at usna.edu
Sat Aug 6 15:18:59 CDT 2016
Do the test again. Set up a KWD to beacon at the fixed site once every 12
seconds on a separate frequency and then drive around with the three
comparative modems. My experience is the kenwood-to-kenwood performance is
probably going to be best under weak signal conditions... Bob
On Sat, Aug 6, 2016 at 4:02 PM, John Langner WB2OSZ via aprssig <
aprssig at tapr.org> wrote:
> The TM-D710 is a great radio, in many ways, but I also found the internal
> TNC demodulator performance to be rather disappointing with real world
> signals heard on the air.
> The document below describes an experiment where a TM-D710 is used to
> to APRS activity around my home. We compare the number of packets received
> - The internal TNC.
> - KPC-3+ connected to D710 speaker out.
> - A "soundcard TNC" connected to D710 speaker out.
> The internal TNC decoded the lowest number. You can read about the test
> conditions here:
> Any TNC can decode a good signal. In the real world we find a lot signals
> that are not so good. Trying to extract something from them can be a real
> challenge. Take a look at some of garbage signals people have been
> aprssig mailing list
> aprssig at tapr.org
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