<html><head><meta http-equiv="content-type" content="text/html; charset=utf-8"></head><body dir="auto"><div>I know some one who made a tx <br><br>Sent from my iPhone</div><div><br>On 22/12/2013, at 6:09 AM, Ray Wells <<a href="mailto:vk2tv@exemail.com.au">vk2tv@exemail.com.au</a>> wrote:<br><br></div><blockquote type="cite"><div>
<meta content="text/html; charset=ISO-8859-1" http-equiv="Content-Type">
<div class="moz-cite-prefix">It's too early to find what I'm looking
for but somewhere in the docs on using DTV dongles for adsb
there's mention of the bandwidth which I thought was stated to be
about 2MHz - but don't hold me to that.<br>
<br>
Dongles with the R820 rx chip already cover the 23cm band, where
(in Australia at least) wideband signals using any modulation
technique are permitted, so there's the experimental rx. Now for
someone smarter than me to come up with an experimental tx.<br>
<br>
Ray<br>
<br>
vk2tv<br>
<br>
On 21/12/13 21:51, Andrew Rich wrote:<br>
</div>
<blockquote cite="mid:ADCF534E-7801-4F1E-A236-C86B44F2A69B@tech-software.net" type="cite">
<meta http-equiv="content-type" content="text/html;
charset=ISO-8859-1">
<div>Most definitely</div>
<div><br>
</div>
<div>Someone should try making adsb for ham radio</div>
<div><br>
</div>
<div>The only thing is the bandwidth </div>
<div><br>
</div>
<div>ADSB is just pulse position modulation. </div>
<div><br>
</div>
<div>Except its at 1MB /s</div>
<div><br>
</div>
<div>I think it's about 7 MHz</div>
<div><br>
</div>
<div>Could be ok on 1200 MHz ?</div>
<div><br>
</div>
<div>It is awesome to hear a 'click' like static that translates
to a position report </div>
<div><br>
</div>
<div>Andrew </div>
<div><br>
Sent from my iPhone</div>
<div><br>
On 21/12/2013, at 1:33 PM, Ray Wells <<a moz-do-not-send="true" href="mailto:vk2tv@exemail.com.au">vk2tv@exemail.com.au</a>>
wrote:<br>
<br>
</div>
<blockquote type="cite">
<div>
<meta content="text/html; charset=ISO-8859-1" http-equiv="Content-Type">
<div class="moz-cite-prefix">Andrew,<br>
<br>
Are there any components of ADS-B that might be transferable
to a totally "new", UHF APRS system. We recognised years ago
that ax25 has severe limitations and that better systems
exist. Whilst we'll never change ax25 and 1k2 aprs it should
be possible to devise an alternative network using new
protocols to which users can migrate over a period of time.<br>
<br>
My $0.02 worth<br>
<br>
Ray<br>
vk2tv<br>
<br>
<br>
On 21/12/13 14:24, Andrew Rich wrote:<br>
</div>
<blockquote cite="mid:007101cefdfc$2f00f1a0$3601a8c0@home30af03032d" type="cite">
<meta http-equiv="Content-Type" content="text/html;
charset=ISO-8859-1">
<meta content="MSHTML 6.00.2900.2180" name="GENERATOR">
<style></style>
<div><font face="Arial" size="2">Been thinking about this
for a while</font></div>
<div> </div>
<div><font face="Arial" size="2">I thought 9k6 was less
reliable.</font></div>
<div> </div>
<div><font face="Arial" size="2">Wouldnt you be better off
going like FL-DIGI ?</font></div>
<div> </div>
<div><font face="Arial" size="2">Fast RTTY </font></div>
<div> </div>
<div><font face="Arial" size="2">- Andrew - </font></div>
<blockquote style="PADDING-RIGHT: 0px; PADDING-LEFT: 5px;
MARGIN-LEFT: 5px; BORDER-LEFT: #000000 2px solid;
MARGIN-RIGHT: 0px">
<div style="FONT: 10pt arial">----- Original Message -----
</div>
<div style="BACKGROUND: #e4e4e4; FONT: 10pt arial;
font-color: black"><b>From:</b> <a moz-do-not-send="true" title="ta1df.huseyin@gmail.com" href="mailto:ta1df.huseyin@gmail.com">Hüseyin ODABAŞ,
TA1DF</a> </div>
<div style="FONT: 10pt arial"><b>To:</b> <a moz-do-not-send="true" title="aprssig@tapr.org" href="mailto:aprssig@tapr.org">TAPR APRS Mailing List</a>
</div>
<div style="FONT: 10pt arial"><b>Sent:</b> Friday,
December 20, 2013 6:08 PM</div>
<div style="FONT: 10pt arial"><b>Subject:</b> Re:
[aprssig] 1200 vs 9600 baud (was: Tracker3 9600 baud
balloon tracker beta offer)</div>
<br>
</blockquote>
</blockquote>
<br>
</div>
</blockquote>
<blockquote type="cite">
<div><span>_______________________________________________</span><br>
<span>aprssig mailing list</span><br>
<span><a moz-do-not-send="true" href="mailto:aprssig@tapr.org">aprssig@tapr.org</a></span><br>
<span><a moz-do-not-send="true" href="http://www.tapr.org/mailman/listinfo/aprssig">http://www.tapr.org/mailman/listinfo/aprssig</a></span><br>
</div>
</blockquote>
<br>
<fieldset class="mimeAttachmentHeader"></fieldset>
<br>
<pre wrap="">_______________________________________________
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="http://www.tapr.org/mailman/listinfo/aprssig">http://www.tapr.org/mailman/listinfo/aprssig</a>
</pre>
</blockquote>
<br>
</div></blockquote><blockquote type="cite"><div><span>_______________________________________________</span><br><span>aprssig mailing list</span><br><span><a href="mailto:aprssig@tapr.org">aprssig@tapr.org</a></span><br><span><a href="http://www.tapr.org/mailman/listinfo/aprssig">http://www.tapr.org/mailman/listinfo/aprssig</a></span><br></div></blockquote></body></html>