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On 12/27/2011 11:25 AM, Amateur Radio WB8NUT wrote:
<blockquote cite="mid:4EF9F181.7050000@wb8nut.com" type="cite">D-Star
is hardly a waste of time and money. D-Star was developed FOR
amateur radio. P25 was developed for the Public Sector market.
<br>
<br>
D-Star is wonderful, and while the Codec is proprietary as I
believe is the case with the P25 Codec, the rest of D-Star is an
open standard.
<br>
<br>
Frankly, I think Yaesu trying to implement the P25 digital mode
instead of going with the ever growing and already established
D-Star digital is a mistake. Just like their Wires linking
protocol. They went this way while others went with Echolink.
Hardly anyone in the U.S. has implemented Wires.
<br>
</blockquote>
<br>
<br>
1) I agree that WIRES is basically a flop. However, Yaesu is
*NOT* pushing P25. They are promoting DMR ("Digital Mobile Radio"
a.k.a. "MotoTRBO"), probably by re-purposing existing commercial
land mobile models for ham use. <br>
<br>
2) Once again, Motorola's marketdroids have taken an open
standard and given it a catchy vowel-challenged name (in the same
vein as "Razr", "Rokr", "Astro25" - their name for P25, etc) in an
effort to suggest it is unique to Motorola. <br>
<br>
"MotoTRBO" is Moto's trade name for "DMR" (Digital Mobile Radio), a
standard defined and documented by ETSI (European Telecommunications
Standards Institute). DMR is quickly becoming a mainstream digital
radio format for NON-public-safety land mobile users; i.e. business
dispatch, utilities, etc. (In North America, the public safety
establishment is digging itself ever deeper into the insanely
complex digital radio tarbaby known as P25.)<br>
<br>
3) The same proprietary DVSI (Digital Voice Systems Inc) codec is
used in <b>ALL</b> of these digital radio systems to convert the
voice input down to a 4.8 or 2.4 kilobits/second data stream. The
DVSI royalty on every radio (which can run as high as $100 per
radio) is becoming similar to the "Microsoft tax" on every computer,
Android phone, etc. <br>
<br>
<br>
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--<br>
<br>
Stephen H. Smith wa8lmf (at) aol.com <br>
Skype: WA8LMF<br>
Home Page: <a class="moz-txt-link-freetext" href="http://wa8lmf.net">http://wa8lmf.net</a><br>
<br>
***** NEW Precision Mapping 9 For UIview Released! *****<br>
<a class="moz-txt-link-freetext" href="http://wa8lmf.net/aprs/PMap9_Notes.htm">http://wa8lmf.net/aprs/PMap9_Notes.htm</a><br>
<br>
<br>
Vista & Win7 Install Issues for UI-View and Precision Mapping<br>
<a class="moz-txt-link-freetext" href="http://wa8lmf.net/aprs/UIview_Notes.htm#VistaWin7">http://wa8lmf.net/aprs/UIview_Notes.htm#VistaWin7</a><br>
<br>
30-meter HF APRS over PSK63<br>
<a class="moz-txt-link-freetext" href="http://wa8lmf.net/APRS_PSK63/index.htm">http://wa8lmf.net/APRS_PSK63/index.htm</a><br>
<br>
"APRS 101" Explanation of APRS Path Selection & Digipeating <br>
<a class="moz-txt-link-freetext" href="http://wa8lmf.net/DigiPaths">http://wa8lmf.net/DigiPaths</a> <br>
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