<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
<html>
<head>
<meta content="text/html;charset=ISO-8859-1" http-equiv="Content-Type">
<title></title>
</head>
<body bgcolor="#ffffff" text="#000000">
In Southern California, 440.800 is a repeater input (445.800-), and
445.925 is 5 kHz off of a repeater output (445.920-). Unfortunately,
neither of those proposed frequencies will be usable in Southern
California. We have been doing a little 9600 baud APRS on 438.975 for
several years though.<br>
<br>
73<br>
Phil - AD6NH<br>
<a class="moz-txt-link-abbreviated" href="http://www.aprs2.net">www.aprs2.net</a><br>
<a class="moz-txt-link-abbreviated" href="http://www.aprsca.net">www.aprsca.net</a><br>
<br>
David Dobbins wrote:
<blockquote
cite="mid:b481d0500909182034g727bb1ecv2d1317dab2c57da6@mail.gmail.com"
type="cite">Our experimentation with 9600 baud APRS in the Puget Sound
region for the past year + shows it works, and works great. We have a
dedicated 9600 baud APRS infrastructure growing on 440.800MHz and will
continue our development.
<div>
<div><br>
</div>
<div>In a recent message with Bob WB4APR, re the 445.925
frequency.... he is recommending that as a UHF voice coordination
frequency for APRS, rather than a data freq.</div>
<div><br>
</div>
<div>We will continue checking with our regional coordination
authorities in hopes of formally designating 440.800 for 9600 baud
APRS. In reviewing the WWARA band plan for UHF, 440.800 does not fall
into any category for other use, so works well with our plans.</div>
<div><br>
</div>
<div>Feedback appreciated..... will 440.800 work elsewhere in the
country? We're hoping for a single UHF frequency to continue
development of a 9600 baud infrastructure.</div>
<div><br>
</div>
<div>For those of you in larger metro areas, when you listen to
144.39 and all the packet activity, do you seldom hear a pause between
packets? If so, you should pursue UHF 9600 baud development where the
packets are much shorter and propagation seems to be working pretty
darn good. We're having lots of success with both D700/D710 and
KPC-9612 w/Icom or Alinco 9600 data radios for TNCs.</div>
<div><br>
</div>
<div>We also have a very successful 9600 baud VHF infrastructure
growing on 144.35 in the Puget Sound region.</div>
<div><br>
</div>
<div>There's lots of room for more informational data on a 9600 baud
system, and our guru's are busy exploiting that now.</div>
<div><br>
</div>
<div>Dave K7GPS</div>
<div>NWAPRS Lead Coordinator</div>
</div>
<pre wrap="">
<hr size="4" width="90%">
_______________________________________________
aprssig mailing list
<a class="moz-txt-link-abbreviated" href="mailto:aprssig@tapr.org">aprssig@tapr.org</a>
<a class="moz-txt-link-freetext" href="https://www.tapr.org/cgi-bin/mailman/listinfo/aprssig">https://www.tapr.org/cgi-bin/mailman/listinfo/aprssig</a>
</pre>
</blockquote>
</body>
</html>