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I understand now. I'll consider your suggestion, but I think that it
would be easier for me to adapt my application to work with Stratux.<br>
<br>
Thanks for the clarification.<br>
<br>
Yaron <br>
<br>
<div class="moz-cite-prefix">On 21/07/2019 23:20, Oliver Jowett
wrote:<br>
</div>
<blockquote type="cite"
cite="mid:CAAjXfu_zHqydJBX_uieL4jP3Q3ZeT5+bAYzwzgY8NWvFbkY4vg@mail.gmail.com">
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<div dir="ltr">UAT uses different modulation / preamble / message
length and framing etc. A Mode S demodulator on a different
frequency is not going to work; you need a demodulator
specifically for UAT.
<div><br>
</div>
<div>The underlying modulation is BFSK so you could maybe use a
generic BFSK demodulator (or even rtl_fm) and build on top of
that, but you do only have ~2 samples per bit to play with on
a 2832 so YMMV.</div>
<div>
<div><br>
</div>
<div>Oliver</div>
<div><br>
</div>
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<br>
<div class="gmail_quote">
<div dir="ltr" class="gmail_attr">On Sun, 21 Jul 2019 at 19:49,
Yaron Haddi <<a href="mailto:yaron@rontalcolour.ca"
moz-do-not-send="true">yaron@rontalcolour.ca</a>> wrote:<br>
</div>
<blockquote class="gmail_quote" style="margin:0px 0px 0px
0.8ex;border-left:1px solid rgb(204,204,204);padding-left:1ex">
<div style="direction:ltr" bgcolor="#FFFFFF"> Hi Oliver,<br>
<br>
I know that the frequency is different and that messages
have other structures. I have created my own message parser,
so I was hopping that all is needed is just changing the
frequency in the rtl_adsb program or, alternately, the
ability to specify the desired frequency in the command
line.<br>
<br>
Yaron<br>
<br>
<div class="gmail-m_-7159817752260756814moz-cite-prefix">On
20/07/2019 06:10, Oliver Jowett wrote:<br>
</div>
<blockquote type="cite">
<div dir="ltr">
<div dir="ltr">On Fri, 19 Jul 2019 at 15:58, Yaron Haddi
<<a href="mailto:yaron@rontalcolour.ca"
target="_blank" moz-do-not-send="true">yaron@rontalcolour.ca</a>>
wrote:</div>
<div dir="ltr"><br>
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<div class="gmail_quote">
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0px 0.8ex;border-left:1px solid
rgb(204,204,204);padding-left:1ex">
<div style="direction:ltr" bgcolor="#FFFFFF"> Is it
possible to adapt rtl_adsb to receive UTAs on 978
MHz as well? I wish something like this was
included in the library as a binary for Windows.<br>
</div>
</blockquote>
<div><br>
</div>
<div>UAT is an entirely different protocol with
different modulation and message formats; it does
not have much in common with 1090MHz ADS-B.</div>
<div><br>
</div>
<div>You might want to look at dump978: <a
href="https://github.com/flightaware/dump978"
target="_blank" moz-do-not-send="true">https://github.com/flightaware/dump978</a> (though
there's no Windows build)</div>
<div><br>
</div>
<div>Oliver</div>
<div><br>
</div>
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<br>
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