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Hello Bob, Good Saturday from Bill - WD8ARZ the Geiger Counter HF
Mobile dude .... hi hi<br>
<br>
The topics / Links below might be some starting points to take in
other directions for what your looking for Bob. These links are ham
hf radio related, though there are hf aircraft versions as you know.<br>
<br>
Though the MarsAle group I have been in for more than a decade has
had selcodes assigned by Bonnie to be used on HF, it didnt catch on
as far as I know. Plenty of software out there for this mode, such
as multipsk.<br>
<br>
Suspect this will at least generate some conversations.... hi hi<br>
<br>
73 from Bill - WD8ARZ<br>
=============================<br>
Selective Calling (SELCAL) and ALE<br>
<a class="moz-txt-link-freetext" href="http://hflink.com/articles/">http://hflink.com/articles/</a><br>
<br>
HF Selcall Evolution<br>
File Format: Microsoft Powerpoint<br>
1. The Evolution of Codan Selcall ......In the beginning God created
493.1 (Kyoto 1978) by means of CCIR. 2. Basic 4 Digit Selcall
......And 493.1 begat the Codan ...<br>
<br>
hflink.com<br>
hflink.com/selcall/Selcall%20evolution.ppt<br>
<br>
International Amateur Radio HF Selcall Channels<br>
All types of HF Digital Selective Calling CCIR 493 or ITU-M R.493
DSC<br>
<a class="moz-txt-link-freetext" href="http://hflink.com/selcall/channels/">http://hflink.com/selcall/channels/</a><br>
<br>
HF Selcall<br>
This is an informational resource for HF Selcall. Selcall CCIR 493-4
is the primary focus of this resource, and the variations of it that
have been developed for modern HF selective calling. References for
ITU-R M.493-n (Marine GMDSS DSC) types of digital selective calling
also are included. The long term objective of this resource is to
provide information about the use of these types of HF Selcall in
various radio communication services. Please refer to the original
documents of the various standards and recommendations for more
detail and updates.<br>
<a class="moz-txt-link-freetext" href="http://hflink.com/selcall/">http://hflink.com/selcall/</a><br>
=============================<br>
<br>
<div class="moz-cite-prefix">On 1/10/2014 12:10 PM, Robert Bruninga
wrote:<br>
</div>
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<p class="MsoNormal">Has anyone had any experience with any
success at DTMF working on HF for some rudimentary commands?</p>
<p class="MsoNormal">
</p>
<p class="MsoNormal">I know tuning is critical as well as
inter-tone noise must be way down.</p>
<p class="MsoNormal"> </p>
<p class="MsoNormal">Just thought maybe someone has experimented
with it.</p>
<p class="MsoNormal">
</p>
<p class="MsoNormal">Bob, WB4aPR<br>
</p>
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