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Hello Roland,
Yes, I am aware of this fact. Indeed the direwolf modem for sure is a
very solid implementation with a vivid user community. My perception, however, is that direwolf is focused on APRS and comes with its own implementation of an ax25 stack.
What I like about the soundmodem is its tight integration with the
linux ax25 kernel stack and the fact that it is capable of multimode.
There are other reasons as well that make the codebase interesting to
me, but about that later, if you really like.
Direwolf can be directly connected to the Linux AX.25 stack either via
it's PTS pseudo-serial interface or it's TCP-KISS interface and socat.
Next up, yes, soundmodem does offer the ability to send AX.25 packets
over at least one alternative mode but in my experience, that one mode
didn't perform very well and never gained any adoption. Direwolf offers multiple modes (AFSK, FSK, PSK, QPSK, IL2P, etc) as well as FX.25
support be it for speed, robustness, etc. Finally, if you run various
packet decode tests, you'll see that Thomas Sailers's soundmodem gets
about a 60-65% decode rate where as Direwolf, UZ7HO's soundmodem, and
even some hardware TNCs get in upwards of 95%:
https://raw.githubusercontent.com/wb2osz/direwolf/master/doc/WA8LMF-TNC-Test-CD-Results.pdf
--David
KI6ZHD
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Hello Roland,<br>
<br>
<blockquote
cite="mid:
ead3128b-135b-707e-e24c-dd69e1b814bd@blackspace.at"
type="cite">Yes, I am aware of this fact. Indeed the direwolf
modem for sure is a very solid implementation with a vivid user
community. My perception, however, is that direwolf is focused on
APRS and comes with its own implementation of an ax25 stack.
<br>
<br>
What I like about the soundmodem is its tight integration with the
linux ax25 kernel stack and the fact that it is capable of
multimode. There are other reasons as well that make the codebase
interesting to me, but about that later, if you really like.
<br>
</blockquote>
<br>
Direwolf can be directly connected to the Linux AX.25 stack either
via it's PTS pseudo-serial interface or it's TCP-KISS interface and
socat. Next up, yes, soundmodem does offer the ability to send
AX.25 packets over at least one alternative mode but in my
experience, that one mode didn't perform very well and never gained
any adoption. Direwolf offers multiple modes (AFSK, FSK, PSK, QPSK,
IL2P, etc) as well as FX.25 support be it for speed, robustness,
etc. Finally, if you run various packet decode tests, you'll see
that Thomas Sailers's soundmodem gets about a 60-65% decode rate
where as Direwolf, UZ7HO's soundmodem, and even some hardware TNCs
get in upwards of 95%:<br>
<br>
<a class="moz-txt-link-freetext" href="
https://raw.githubusercontent.com/wb2osz/direwolf/master/doc/WA8LMF-TNC-Test-CD-Results.pdf">https://raw.githubusercontent.com/wb2osz/direwolf/master/doc/WA8LMF-TNC-Test-CD-Results.pdf</a>
<br>
<br>
--David<br>
KI6ZHD<br>
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