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My upcoming ADS-SR2 does DTMF decoding on 2 channels (should be 3 in
the next hardware version) and has a BASIC scripting language. If
someone really wanted to, they could use it to configure their own
APRS DTMF gateway using whatever format they wanted to set up. And
it doesn't have text-to-speech capability (yet, anyway) but it'll
play WAV files so you can record numbers and letters and messages
and have the unit respond back with a voice confirmation.<br>
<br>
Scott<br>
N1VG<br>
<br>
<div class="moz-cite-prefix">On 2/11/2017 9:00 AM, Robert Bruninga
wrote:<br>
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<blockquote
cite="mid:CALdCfNL_M9GWu_cm7LwsO+N+v3WyMf9MMPgtpCv2UqgL_Pe_Fg@mail.gmail.com"
type="cite">
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<div>Since An APRStt (DTMF) transmission is converted to
APRS at the local VHF receiver, there is no need to encode
the full DDMM.mmN/DDDMM.mmW plus the ten digits needed for
the callsign. (35 digits) when the VHF receiver already
knows where it is, it already knows the DDMM and DDDMM
digits. SO the DTMF user only needs the four mmmm digits
to give a precise position (60 feet) report at a 1 mile
event area such as dayton.<br>
<br>
</div>
Or the Mm/Mm four digits to give 600 foot precision within
10 miles of the repeater.<br>
<br>
</div>
By keeping the significant digits to 4, thusly, we can encode
both the callsign and relevant position in the 16 digits of
most DTMF memories, while still giving all APRS
functiionality.<br>
<br>
</div>
Bob<br>
<br>
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<div class="gmail_extra"><br>
<div class="gmail_quote">On Fri, Feb 10, 2017 at 8:37
AM, Bob Mueller <span dir="ltr"><<a
moz-do-not-send="true"
href="mailto:bob@funautical.com" target="_blank">bob@funautical.com</a>></span>
wrote:<br>
<blockquote class="gmail_quote" style="margin:0 0 0
.8ex;border-left:1px #ccc solid;padding-left:1ex">
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<div>I just read over: </div>
<div><a moz-do-not-send="true"
href="http://aprs.org/aprstt.html"
target="_blank">http://aprs.org/aprstt.html</a></div>
<div><a moz-do-not-send="true"
href="http://aprs.org/aprstt/aprstt-user.txt"
target="_blank">http://aprs.org/aprstt/aprstt-<wbr>user.txt</a></div>
</div>
<div><br>
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<div>Are there any standard position formats as
part of APRStt? It seems that the positions
are only "proprietary" to the user. By using
their own map grid or y,x position from a
known fixed point. It does not appear that
there is any way to encode a lat/lon. I don't
see anything in the documentation that
indicates a maidenhead locator is resolved to
lat/lon and then digipeated.</div>
<div><br>
</div>
<div>That leads me to my next question that I
believe I already know the answer to: Is
there any way to use APRStt to create APRS
objects? It appears the answer is no. As it
only supports A, B, C, D. Callsign, Position,
Comment, Messages respectively. No objects.</div>
<div><br>
</div>
<div>
<div>Please confirm that I have this correct
and I'm not missing something.</div>
<div><br clear="all">
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<div
class="m_8184129954613175726gmail_signature">
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<p><span>--... ...--<br>
</span><span
style="font-size:12.8px">Bob
Mueller<br>
</span><span
style="font-size:12.8px">K8MD<br>
</span><a moz-do-not-send="true"
href="mailto:bob@funautical.com" style="font-size:12.8px"
target="_blank">bob@funautical.com</a></p>
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<br>
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