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<div class="moz-cite-prefix">On 2/15/2013 9:36 PM, Robert Bruninga
wrote:<br>
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<p class="MsoNormal">Has anyone gained lots of experience with a
D710 APRS display head connected to an ICOM-2820 dual band
radio?</p>
<p class="MsoNormal"> </p>
<p class="MsoNormal"> </p>
<p class="MsoNormal">But I’m not sure he included an AVMAP too.
Is the result of the three a kludge or a real viable system
worthy of display and use at the Jamboree?</p>
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<br>
It's intrinsically a kludge. <br>
<br>
<br>
<br>
1) There is no GPS without the optional D-Star digital voice
module. In turn the GPS appears to be internally mounted on the PC
board containing the D-Star system. The external part of the GPS
system is only an (amplified?) patch antenna plugged into a GPS
antenna jack on the radio main chassis. From the manual, there
appears to be no way to get at the GPS data for uses other than
embedding it into the D-Star digital transmission stream. <br>
<br>
Weirdly for a mobile, the manual warns several times that the GPS
antenna is NOT WATERPROOF(!). <br>
<br>
<br>
<br>
2) The screwball 10 VDC power requirement for the D710 control
head forces you to either use a proprietary power supply, or kludge
a non-standard battery pack as shown on your web page. <br>
<br>
(I would guess that this pain-in-the-neck non-standard power
requirement, along with it's relatively high price, is a major
reason why the standalone D710 head has gained virtually zero
traction as an APRS accessory in the ham marketplace. For the price
of the 710 head plus it's weird power cable, you can almost buy a
9"-screen netbook PC and run a soundcard soft TNC like the UZ7HO
"Soundmodem" + a full APRS application with messaging and mapping.
As a "free" bonus, the netbook's built-in webcam lets you do live
SSTV as well, through the same computer soundcard/radio interface.
) <br>
<br>
<br>
<br>
3) Between the radio, the D710 head and the AVmap, you will need
3 separate connections to a 12VDC power source. <br>
<br>
<br>
4) Given that the radio DOES have the sta<br>
--<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>
High Performance Sound Systems for Soundcard Apps<br>
<a class="moz-txt-link-freetext" href="http://wa8lmf.net/ham/imic.htm">http://wa8lmf.net/ham/imic.htm</a><br>
<a class="moz-txt-link-freetext" href="http://wa8lmf.net/ham/uca202.htm">http://wa8lmf.net/ham/uca202.htm</a><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>
"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>
<br>
<br>
ndard mini-DIN "data" jack (actually analog RX and TX audio + PTT +
COR) , the 2820 is no more or less "APRS ready" than any other
radio with a 6-pin mini-DIN jack. <br>
<br>
Details on the industry-standard 6-pin mini-DIN data jack here: <br>
<br>
<a class="moz-txt-link-rfc2396E" href="http://wa8lmf.net/6-Pin-MiniDin-Data-Connector"><http://wa8lmf.net/6-Pin-MiniDin-Data-Connector></a><br>
<br>
<br>
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