<div dir="ltr">Might be a good place to plug a new Wiki page. Explains how to set deviation of a 1200-baud TNC/Radio combo using a $20 RTL dongle.<div><br></div><div><a href="http://xastir.org/index.php/HowTo:Set_Deviation_via_RTL">http://xastir.org/index.php/HowTo:Set_Deviation_via_RTL</a><br></div></div><div class="gmail_extra"><br><div class="gmail_quote">On Wed, May 11, 2016 at 7:07 PM, John Langner via aprssig <span dir="ltr"><<a href="mailto:aprssig@tapr.org" target="_blank">aprssig@tapr.org</a>></span> wrote:<br><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex"><br>
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Suggested reading on the subject.<br>
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Sometimes it's a little mystifying why an APRS / AX.25 Packet TNC will decode some signals and not others. A weak signal, buried in static, might be fine while a nice strong clean sounding signal is not decoded. Here we will take a brief look at what could cause this perplexing situation and a couple things that can be done about it.<br>
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<a href="https://github.com/wb2osz/direwolf/raw/master/doc/A-Better-APRS-Packet-Demodulator-Part-1-1200-baud.pdf" rel="noreferrer" target="_blank">https://github.com/wb2osz/direwolf/raw/master/doc/A-Better-APRS-Packet-Demodulator-Part-1-1200-baud.pdf</a><br>
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Here, we take a closer look at some of the frames on the TNC Test CD in hopes of gaining some insights into why some are easily decoded and others are more difficult. There are a lot of ugly signals out there. Many can be improved by decreasing the transmit volume. Others are just plain weird and you have to wonder how they are being generated.<br>
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<a href="https://github.com/wb2osz/direwolf/raw/master/doc/A-Closer-Look-at-the-WA8LMF-TNC-Test-CD.pdf" rel="noreferrer" target="_blank">https://github.com/wb2osz/direwolf/raw/master/doc/A-Closer-Look-at-the-WA8LMF-TNC-Test-CD.pdf</a><br>
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</blockquote></div><br><br clear="all"><div><br></div>-- <br><div class="gmail_signature">Curt, WE7U<br><a href="http://wetnet.net/~we7u" target="_blank">http://wetnet.net/~we7u</a><br><a href="http://www.sarguydigital.com" target="_blank">http://www.sarguydigital.com</a></div>
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