[arm-allstar] Soundcard FOB

[Doug Crompton]

Chris,

 That partially answers the question. For some reason the CM108B has lower
audio levels. The spec does not show this so either it is spec'ed wrong or
these are clone chips not manufactured to spec. Unfortunately you will have
to live with it unless you build a little op-amp circuit. If I were
manufacturing these I would include op-amps in both the input and output
with adjustment pots. If the levels you have set work then you are OK. It
is not a problem that it is turned all the way up as long as that is a good
level.




*73 Doug*

*WA3DSP*

*http://www.crompton.com/hamradio <http://www.crompton.com/hamradio>*

On Sun, Mar 19, 2017 at 10:38 PM, "Chris Viningre via arm-allstar" <
arm-allstar at hamvoip.org> wrote:

> Its a CM108B and I haven't had any problem with it being detected. I have 5
> more to try so I'll see if they are different.
>
> Chris Viningre
> 70 W. Roadrunner
> Salt Flat, Texas 79847
> C:(915) 504-1510
> chrisviningre at gmail.com
> Amateur Radio Operator: WS5B
> https://www.qrz.com/db/ws5b
> http://www.reverbnation.com/chrisviningre
>
> On Sun, Mar 19, 2017 at 8:12 PM, "Leighton Judd via arm-allstar" <
> arm-allstar at hamvoip.org> wrote:
>
> > G'day all,
> >
> > I am new to Allstar, but I thought I would share some thoughts on this
> > matter.
> >
> > I have been playing around with similar CM108 based USB sound card
> devices
> > also.
> >
> > The ones that I have are actually CM108B and required a little bit of
> > modification to the code to  have them detected.
> >
> > I have also noticed that on one radio, I have had to increase the mic
> gain
> > to 999 also. I think that this is just a function of the output level
> from
> > the radio. It doesn't seem to be a problem, however I am still testing my
> > setup.
> >
> > I am happy to share more info regarding my USB sound card and node if
> that
> > is helpful.
> >
> >
> > Regards,
> > Leighton
> >
> > On Mon, 20 Mar 2017 at 13:03, "Doug Crompton via arm-allstar" <
> > arm-allstar at hamvoip.org> wrote:
> >
> > > Chris,
> > >
> > >   We use those cards quite a bit and have had no problems. At least
> they
> > > look like that card. What is the chip number if you can read it. Maybe
> > you
> > > got a bad card? Do you have another one to try?
> > >
> > >
> > > *73 Doug*
> > >
> > > *WA3DSP*
> > >
> > > *http://www.crompton.com/hamradio <http://www.crompton.com/hamradio>*
> > >
> > > On Sun, Mar 19, 2017 at 7:00 PM, "Chris Viningre via arm-allstar" <
> > > arm-allstar at hamvoip.org> wrote:
> > >
> > > > I modafied this
> > > > http://www.ebay.com/itm/272374780193?_trksid=p2057872.
> > > > m2749.l2649&ssPageName=STRK%3AMEBIDX%3AIT
> > > > soundcard and it works great other than low TX and Rec audio. It's ok
> > if
> > > I
> > > > use 999 settings on both but I would like to get it closer to the
> > middle.
> > > > Everything works good with the URI interface. On the Mic line I have
> a
> > > 10uf
> > > > capacitor and no resistor. RXBOOST is on. Any ideals?
> > > >
> > > > Chris Viningre
> > > > 70 W. Roadrunner
> > > > Salt Flat, Texas 79847
> > > > C:(915) 504-1510
> > > > chrisviningre at gmail.com
> > > > Amateur Radio Operator: WS5B
> > > > https://www.qrz.com/db/ws5b
> > > > http://www.reverbnation.com/chrisviningre
> > > > _______________________________________________
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> > > >
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> > > >
> > > >
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