[arm-allstar] Boot from Raspberry Pi 3B+ USB Stick

[David McGough]

Hi Jeff,

I'm not sure how many echolink users are typically using your system?

The reason I ask is that in the currently released code, there is an audio 
quality issue with outbound audio to echolink (from the HamVoIP/AllStar 
node).  I have this issue resolved in my latest beta test code, which will 
be released very soon.  Once it's release, the update process is painless 
and can be performed on the installed node.


73, David KB4FXC



On Sat, 2 Jan 2021, "Jeff Hochberg via ARM-allstar" wrote:

> Hi Kevin,
> 
> Thanks for the response. Right out of the gate, the only purpose the RPi
> will serve is providing EchoLink to our users. The RPi that's been running
> at the repeater site is/was running svxlink purely for EchoLink service.
> Since it has been so unreliable, I am going to swap out the power supply
> with one that's designed specifically for a Raspberry Pi as opposed to the
> generic one that was originally installed.
> 
> All that will be connected to the RPi is a USB sound card interface that
> has a connection directly to our RLC Club Deluxe repeater controller.
> 
> I'm fairly certain this is the model we're using:
> 
> http://www.masterscommunications.com/products/radio-adapter/ra40.html
> 
> The controller links EchoLink to our 2m analog repeater (most of the time)
> and we link in a 220 MHz repeater during our nets which take place a couple
> of times a week.
> 
> We are not using a RIM at all at this time, though it is something we've
> considered.
> 
> We did buy an RTCM at one point with the intent of using it for
> site-linking it at a remote receiver site, but were never able to secure a
> physical location, so it's been sitting around with nothing to do. I know
> MicroNode is no longer in business, so we likely won't be using it since it
> would be difficult (if not impossible) to replace if it were to fail. That
> said, we would likely go with a RIM if/when we are able to secure a
> location for a remote receiver.
> 
> ***************************************************
> Georgia Digital: http://dmr.georgiadigital.net/ipsc
> GeorgiaDMR.net on Groups.io: https://groups.io/g/GeorgiaDMR
> Appalachian Trail Golden Packet: https://atgp.groups.io/g/main
> ***************************************************
> 
> Jeff Hochberg
> W4JEW
> Atlanta, GA
> 404-304-4575
> jeff at w4jew.com
> 
> 
> On Sat, Jan 2, 2021 at 8:01 AM Kevin Custer <kevin at kc-wireless.com> wrote:
> 
> > Jeff,
> >
> > If you are using the RB RIM (not a lite version - but the full blown RIM
> > that's packaged like the URI), because of its design, it takes a good bit
> > of DC current.  One reason is because of the onboard DC-DC converter
> > (charge pump) to create a higher voltage for the audio amplifiers.
> > Obviously - this current has to come from the Raspberry Pi and its power
> > supply.  This additional current draw may be taxing your power supply
> > making the system unstable.  As has been mentioned previously, powering may
> > be the cause of your instability.
> >
> > If you're using one of the "Lite" versions - then this information doesn't
> > apply, because they draw the same as any other radio adapter - probably
> > less.
> >
> > All of AllStar compatible USB radio interface modules that Repeater
> > Builder builds use a genuine C-Media CM119A.  IMHO - over time - this has
> > been proven to be the best chipset for AllStar utilization, regardless of
> > the software or channel driver method chosen to run it.
> >
> > Disclosure - The RIM is not my product - it's Scott Zimmerman's (RB the
> > company) <http://www.repeater-builder.com/rbtip/whoisrb.html>, but I
> > helped design it.  The same chipset is used in all of my RA, RL, and DRA
> > products.
> >
> > Kevin - W3KKC
> >
> >
> > On 1/1/2021 6:16 PM, "Jeff Hochberg via ARM-allstar" wrote:
> >
> > For what it's worth - we have a USB audio card from Repeater Builder - IRRC
> > (C-Media chipset) that's connected to the svxlink box, then that goes to
> > our RLC controller.
> >
> > I have a USB sound card here (also with a C-Media chipset - I believe the
> > exact same chipset), so I'm going through the setup process hoping that
> > when I remove the USB sound card I'm using temporarily and replace it with
> > the production USB sound card, that all will work well.
> >
> >
> >
> >
> _______________________________________________
> 
> ARM-allstar mailing list
> ARM-allstar at hamvoip.org
> http://lists.hamvoip.org/cgi-bin/mailman/listinfo/arm-allstar
> 
> Visit the BBB and RPi2/3/4 web page - http://hamvoip.org
>