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<div class="moz-cite-prefix">On 12/12/2023 2:57 PM, Denis Barton
wrote:<br>
</div>
<blockquote type="cite"
cite="mid:7a61081f-90d6-4298-b2e5-25095a4e0f35@gmail.com">Stephen,
what frequency for VARHF APRS on 30Mhz ?
<br>
<br>
Denis
<br>
<br>
WB8SKP
<br>
</blockquote>
<p> </p>
<p>The same as for classic packet APRS. All three modes are
operating from the same Yaesu FT-891 receivers on each band. <br>
</p>
<p>On 30M that means 10.147.60 MHz USB carrier freq, assuming you
are using standard 1600/1800 "KAM" tones on classic FSK packet.
Set the FLdigi modes (MFSK16 / PSK63) to 1700 Hz center frequency;
i.e. same as 300-baud packet. VARA generates a FIXED spread of
tones centered around 1500 Hz audio frequency, so the on-air
signal will appear to be 200 Hz lower than packet or MFSK. The
DSP IF-passbands on my FT-891 transceivers has been widened
slightly (from 500 Hz to around 650) to accommodate the "slightly
off-frequency" VARA mode. <br>
</p>
<p>On 60M "Channel 5" (5.403.50 USB carrier freq) same thing --
operate the normal packet APRS and FLdigi modes with standard
1600/1800 tones. VARA with it's 1500 Hz center frequency will be
also received with no frequency offset required. <br>
</p>
<p><br>
</p>
<hr width="100%" size="2">Stephen H. Smith wa8lmf (at) aol.com <br>
Skype: WA8LMF<br>
EchoLink: Node # 14400 [Think bottom of the 2-meter band]<br>
Home Page: <a class="moz-txt-link-freetext" href="http://wa8lmf.net">http://wa8lmf.net</a><br>
<br>
"Studio B" Ham Shack on Wheels<br>
<a class="moz-txt-link-rfc2396E" href="http://WA8LMF.net/Aliner"><http://WA8LMF.net/Aliner></a><br>
<br>
-- APRS over VARA --<br>
<a class="moz-txt-link-rfc2396E" href="http://wa8lmf.net/VARAforAPRS.htm"><http://wa8lmf.net/VARAforAPRS.htm></a><br>
<br>
60-Meter APRS! HF NVIS APRS Igate Now Operating<br>
<a class="moz-txt-link-rfc2396E" href="http://WA8LMF.net/map/"><http://WA8LMF.net/map/></a><br>
<br>
Flying Digipeater!<br>
<a class="moz-txt-link-rfc2396E" href="http://WA8LMF.net/FlyingDigi"><http://WA8LMF.net/FlyingDigi></a><br>
<br>
<br>
<p><br>
</p>
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