<html>
<head>
<meta content="text/html; charset=utf-8" http-equiv="Content-Type">
</head>
<body bgcolor="#FFFFFF" text="#000000">
<div class="moz-cite-prefix">Matt,<br>
<br>
With all due respect, you are comparing apples and oranges.
Asterisk isn't what takes up the hardware's capabilities, it's the
processes of app_rpt running through USB, managing a radio
adapter. DSP is involved in doing lots of audio processing -
things like de-emphasizing the receiver audio and pre-emphasizing
and limiting the transmitter audio. Then, throw in the features
of full DSP (USBradio) and even more resources are required.
Multiply any of this by 3, and you just sunk the ship.<br>
<br>
The Raspberry Pi 3 recently had a beta release for DIAL, but I
really doubt there will be any significant increase in performance
over a Raspberry Pi 2 in this application. You may have missed
it, but most developers of this application, no matter from what
camp, suggest using only one radio adapter with a Raspberry Pi x.
That isn't to say you can't run two, as I have heard of successful
SimpleUSB deployments of 2 radio adapters, but never 3.<br>
<br>
Raspberry Pi's are nice, but don't expect them to do what a full
blown PC is required to do. This might not be the right appliance
for your set-up. I can think of others that I might choose in
your instant case.<br>
<br>
I have over 50 deployments of AllStar and they were ALL out of
pocket. This application didn't cost you any money. Spend what
you saved on firmware to buy more powerful hardware, then make
sure you send a donation to Dude. <br>
<br>
<a class="moz-txt-link-freetext" href="https://allstarlink.org/">https://allstarlink.org/</a> and press the DONATE button.<br>
<br>
Kevin - W3KKC<br>
<br>
<br>
<br>
<br>
<br>
On 4/8/2016 3:26 PM, Matt Brennan wrote:<br>
</div>
<blockquote
cite="mid:CACLBzuohiWmy_QFEQUsx6kXB9bKvPBQBHooXMkRHb25k0c80wg@mail.gmail.com"
type="cite">
<div dir="ltr">This is a portable crossband repeater setup in a
Pelican case. It is intended to be deployed during public
service events. Raspberry Pi's were used to keep the form factor
small (and the cost down, since it's all out of pocket).
<div><br>
</div>
<div>We tried to use a Raspberry Pi 3, but unfortunately it
doesn't seem to be supported yet. We aren't really doing any
processing. It's two radios on simplex channels, with a third
that transmits on both. The largest number of audio paths
enabled at any given time is 2. A Raspberry Pi 2 should be
able to handle that. In fact, the CPU never goes above 30%. I
have another one running Asterisk that can handle managing 10
active SIP calls without an issue. </div>
<div><br>
</div>
<div>-Matt<br>
<div><br>
</div>
</div>
</div>
<div class="gmail_extra"><br>
<div class="gmail_quote">On Fri, Apr 8, 2016 at 11:16 AM, Kevin
Custer <span dir="ltr"><<a moz-do-not-send="true"
href="mailto:kuggie@kuggie.com" target="_blank">kuggie@kuggie.com</a>></span>
wrote:<br>
<blockquote class="gmail_quote" style="margin:0 0 0
.8ex;border-left:1px #ccc solid;padding-left:1ex">3 radios
on one Raspberry Pi 2? I guess my next question would be
why?<br>
<br>
If you are running SimpleUSB now, switching to USBradio will
likely make the situation worse as there is generally more
DSP going on in USBradio than SimpleUSB - depending on exact
configuration.<br>
<br>
Raspberry Pi's are inexpensive as compared to some PC's
which could have enough horsepower to properly operate 3 or
4 radio interfaces, even in full DSP. If you really want to
run multiple radio adapters on a single appliance, consider
choosing a hardware platform powerful enough to do it
properly.<span class="HOEnZb"><font color="#888888"><br>
<br>
Kevin</font></span>
<div class="HOEnZb">
<div class="h5"><br>
<br>
On 4/8/2016 9:52 AM, Matt Brennan wrote:<br>
<blockquote class="gmail_quote" style="margin:0 0 0
.8ex;border-left:1px #ccc solid;padding-left:1ex">
Sorry - 3. 3 separate simplex radios.<br>
<br>
Someone else individually replied to me and said it's
likely an issue with SimpleUSB and I should try using
usbradio instead. I will be trying that tomorrow, but
still open to other suggestions.<br>
<br>
Thanks again,<br>
Matt, NM1B<br>
</blockquote>
<br>
</div>
</div>
</blockquote>
</div>
<br>
</div>
</blockquote>
<br>
</body>
</html>