<div>Andrew:</div>
<div> </div>
<div>Do you have any good web links that explain Mode S/ADS-B, the tech specs, formats etc?</div>
<div> </div>
<div>What kind of reciever are you using.</div>
<div> </div>
<div>Thanks</div>
<div> </div>
<div>Jeff N4864S<br><br></div>
<div class="gmail_quote">On Wed, Jul 1, 2009 at 5:12 PM, Andrew Rich <span dir="ltr"><<a href="mailto:vk4tec@tech-software.net">vk4tec@tech-software.net</a>></span> wrote:<br>
<blockquote style="BORDER-LEFT: #ccc 1px solid; MARGIN: 0px 0px 0px 0.8ex; PADDING-LEFT: 1ex" class="gmail_quote">
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<div><font size="2" face="Arial">There are heaps of cheap video tx modules around.</font></div>
<div><font size="2" face="Arial"></font> </div>
<div><font size="2" face="Arial">Is there any reason why they can't be PulsePositionModulated ? </font></div>
<div><font size="2" face="Arial"></font> </div>
<div><font size="2" face="Arial">Should be enough bandwidth </font></div>
<div><font size="2" face="Arial"></font> </div>
<div><font size="2" face="Arial">I have been looking closely at MODE S aircraft signals - 1 MB at 8MHz bandwidth</font></div>
<div><font size="2" face="Arial"></font> </div>
<div><font size="2" face="Arial">Sounds like a click. Sends position</font></div>
<div><font size="2" face="Arial"></font> </div>
<div><font size="2" face="Arial">Also been looking at AIS - 9600 self organising GMSK. </font></div>
<div><font size="2" face="Arial"></font> </div>
<div><font size="2" face="Arial">Maybe good ole 1200 baud will be a round for a while.</font></div>
<div><font size="2" face="Arial"></font> </div>
<div><font size="2" face="Arial">I have been using radio modules - 19k2 on air - 100 mW beef up to 30 watts.</font></div>
<div><font size="2" face="Arial"></font> </div>
<div><font size="2" face="Arial">Andrew</font></div>
<div><font size="2" face="Arial"></font> </div>
<div><font size="2" face="Arial"></font> </div></div><br>_______________________________________________<br>aprssig mailing list<br><a href="mailto:aprssig@tapr.org">aprssig@tapr.org</a><br><a href="https://www.tapr.org/cgi-bin/mailman/listinfo/aprssig" target="_blank">https://www.tapr.org/cgi-bin/mailman/listinfo/aprssig</a><br>
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