<div dir="ltr">XIPAR does not do GPS timing of the audio so there will be no timing of audio. Its called "simple voter", no frills. XIPAR simply selects the best receiver based on DSP signal strength measurements. <br></div><div class="gmail_extra"><br><div class="gmail_quote">On Wed, Mar 30, 2016 at 9:01 AM, Joe Leikhim <span dir="ltr"><<a href="mailto:rhyolite@leikhim.com" target="_blank">rhyolite@leikhim.com</a>></span> wrote:<br><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">
<div bgcolor="#FFFFFF" text="#000000">
Without GPS, how does XIPAR deal with jitter and network latency?<div><div class="h5"><br>
<br>
<div>On 3/30/2016 11:25 AM, Jeff Ackerman
wrote:<br>
</div>
<blockquote type="cite">
<div dir="ltr">
<div>
<div>If you looking for the alternative IP voting of the
varuious app_rpt flavors you can try XIPAR: <a href="http://www.xelatec.com/xipar/simplevoter" target="_blank"></a><a href="http://www.xelatec.com/xipar/simplevoter" target="_blank">http://www.xelatec.com/xipar/simplevoter</a><br>
<br>
</div>
It wont be as seamless of voting as a RTCM, but its much
simpler, doesnt require anything more then PC's, the IP
backhaul and usb radio interfaces with radios capable of
giving discriminator audio.<br>
<br>
</div>
Conventional hardware voting comparators could work but require
the backhaul, which in most commercial applications is 4 wire
e&m voice circuits using either tone signaling or e&m
signaling. (This method of voting is done outside of
allstar/app_rpt.)<br>
</div>
<div class="gmail_extra"><br>
<div class="gmail_quote">On Wed, Mar 30, 2016 at 8:09 AM, Joe
Leikhim <span dir="ltr"><<a href="mailto:rhyolite@leikhim.com" target="_blank">rhyolite@leikhim.com</a>></span>
wrote:<br>
<blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">Here are
some products to start with;<br>
<br>
There is the Raven M4x<br>
<br>
<a href="http://www.ravencomm.com/documents/products_doc3_23.pdf" rel="noreferrer" target="_blank">http://www.ravencomm.com/documents/products_doc3_23.pdf</a><br>
<br>
Raytheon JPS SNV-12 (Though the future of this product is up
in the air, it was the defacto standard. Uses 600 ohm VF
circuits, IP connectivity needs to be overlaid)<br>
<a href="http://www.simulcastsolutions.com/userfiles/file/appnotes/vSnv12App.pdf" rel="noreferrer" target="_blank">http://www.simulcastsolutions.com/userfiles/file/appnotes/vSnv12App.pdf</a><br>
<br>
Motorola Spectra Tac (Obsolete Now Motorola has pretty much
abandoned analog FM technology. Uses 600 ohm VF circuits,)<br>
<a href="http://www.repeater-builder.com/motorola/spectra-tac/spectratac-index.html" rel="noreferrer" target="_blank">http://www.repeater-builder.com/motorola/spectra-tac/spectratac-index.html</a><br>
<br>
The above voters all use some method of signal/noise voting.
The JPS SNV-12 and the Raven M4X use DSP to make decision,
while the Spectra Tac was pretty much an analog noise
measurement vs a status tone/audio AGC level. The SpectraTac
does not support non-Motorola receivers unless you know the
"secret sauce" which I am privy to.<br>
<br>
This site has some practical examples of projects that are
simulcast, but by design incorporate the SNV-12 voters.<br>
<br>
<a href="http://www.simulcastsolutions.com" rel="noreferrer" target="_blank">www.simulcastsolutions.com</a><br>
<br>
Are you looking for some more in depth RF design aspects of
receiver voting? I can help perhaps.<br>
<br>
Joe<br>
<br>
<a href="http://www.leikhim.com" rel="noreferrer" target="_blank">www.leikhim.com</a>
<div>
<div><br>
<br>
On 3/8/2016 5:20 AM, Steve Wright wrote:<br>
<blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">
On 05/03/16 06:00, <a href="mailto:mike@midnighteng.com" target="_blank">mike@midnighteng.com</a>
wrote:<br>
<blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">
FYI There are RTCM /voter systems for app_rpt if you
want to do it right.<br>
<br>
</blockquote>
<br>
Is there an example voting-RX project somewhere I can
read about?<br>
<br>
Non-RTCM please. I know about the RTCM and I'm
looking at alternatives.<br>
<br>
<br>
Many thanks,<br>
Steve<br>
<br>
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-- <br>
Joe Leikhim<br>
<br>
<br>
Leikhim and Associates<br>
<br>
Communications Consultants<br>
<br>
Oviedo, Florida<br>
<br>
<a href="mailto:JLeikhim@Leikhim.com" target="_blank">JLeikhim@Leikhim.com</a><br>
<br>
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<br>
<a href="http://WWW.LEIKHIM.COM" rel="noreferrer" target="_blank">WWW.LEIKHIM.COM</a>
<div>
<div><br>
<br>
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<br>
<br clear="all">
<br>
-- <br>
<div>Jeff Ackerman<br>
<a href="mailto:kg6uyz@gmail.com" target="_blank">kg6uyz@gmail.com</a><br>
</div>
</div>
</blockquote>
<br>
<pre cols="72">--
Joe Leikhim
Leikhim and Associates
Communications Consultants
Oviedo, Florida
<a href="mailto:JLeikhim@Leikhim.com" target="_blank">JLeikhim@Leikhim.com</a>
<a href="tel:407-982-0446" value="+14079820446" target="_blank">407-982-0446</a>
<a href="http://WWW.LEIKHIM.COM" target="_blank">WWW.LEIKHIM.COM</a></pre>
</div></div></div>
</blockquote></div><br><br clear="all"><br>-- <br><div class="gmail_signature">Jeff Ackerman<br><a href="mailto:kg6uyz@gmail.com" target="_blank">kg6uyz@gmail.com</a><br></div>
</div>