[arm-allstar] Yaesu DR-1X Interface

Sun Dec 20 02:29:11 EST 2015

How high a drive level (volts) do you need into what impedance?

There are an assortment of inexpensive class-D stereo headphone and
speaker amps available from China---everything from 1W to 100W and more.

Here are a couple "high power" examples from a US source:

http://www.ebay.com/itm/221449976912
http://www.ebay.com/itm/221783164907

And, some from China:

http://www.ebay.com/itm/310568397330
http://www.ebay.com/itm/181164174674

73, David KB4FXC

On Sat, 19 Dec 2015, Sam Skolfield wrote:

> +1 I'm also looking for advice on choosing a higher gain device for the
> output of a URI (for one weird project of mine)
> 
> On Sat, Dec 19, 2015 at 10:47 PM, Jeff Carlyle KD0QCN <kd0qcn at aecimo.org>
> wrote:
> 
> > Doug,
> >
> > I am running 12 volt into the URIX, and just to test I cranked the TX
> > level to 999 and I still have audio that is still so low you can barely
> > hear it.
> >
> > I'm open to suggestions as I have tried everything I can think of.
> >
> > Jeff
> > KD0QCN
> >
> > On Dec 20, 2015, at 12:13 AM, Doug Crompton <doug at crompton.com> wrote:
> >
> > Jeff,
> >
> >  The DR1(x)  needs a lot of TX audio. In the mods I made I used the
> > built-in amplifier in the DMK-URI and had the TX level set to almost max -
> > like 950. That seemed to work OK. If you are already doing that and have
> > very low audio then I guess yours is different for some reason. Also if you
> > are using 5V to power the additional amp you could try running it from the
> > suggested 12V. In that case you would need to use an external voltage to
> > the opamp pin on the DMK-URI. Refer to the DMK web site for schematics and
> > suggestions. Using 12V you should be able to develop more than enough audio.
> >
> > Let me know what you finally find.
> >
> >
> >
> > *73 DougWA3DSPhttp://www.crompton.com/hamradio
> > <http://www.crompton.com/hamradio>*
> >
> >
> > ------------------------------
> > From: kd0qcn at aecimo.org
> > Date: Sat, 19 Dec 2015 22:29:08 -0600
> > To: arm-allstar at hamvoip.org
> > Subject: Re: [arm-allstar] Yaesu DR-1X Interface
> >
> > Hey Doug and All,
> >
> > OK, here is where I am on the interface, I followed your how to on
> > hamvoip, the only thing I did different was I am going high on COS polarity
> > because I didn't have the items necessary to do it and I'm an hour away
> > from the nearest radio shack.  I set carrierfrom = USB to compensate.
> > Everything seems to be working fine except I have VERY low TX audio, as in
> > the volume on my test radio is all the way up and can barely hear it. Local
> > speaker audio is fine.  I even turned on the amplifier in the uri as
> > suggested in the how to. What am I missing?
> >
> > Thanks,
> > Jeff Carlyle
> > KD0QCN
> >
> >
> > On Nov 30, 2015, at 3:57 PM, Doug Crompton <doug at crompton.com> wrote:
> >
> > As I remember the ham I modified it for had tried the back connector and
> > something did not work. I confirmed that again but I forget what didn't
> > work. I am checking with the other ham and if I find anything out I will
> > let you know. So in the end it was just easier to do the same mod as the
> > DR1.
> >
> >
> >
> > *73 DougWA3DSPhttp://www.crompton.com/hamradio
> > <http://www.crompton.com/hamradio>*
> >
> >
> > ------------------------------
> > From: kd0qcn at aecimo.org
> > Date: Mon, 30 Nov 2015 13:07:55 -0600
> > To: arm-allstar at hamvoip.org
> > Subject: Re: [arm-allstar] Yaesu DR-1X Interface
> >
> > Doug,
> >
> > Thanks for the clarification, would you be so kind as to expand on the
> > problems you had using the back connector?  I would like to be able to
> > explain to the club why I need to do it the way you explained vs just using
> > the back connector.
> >
> > Thanks,
> > Jeff
> > KD0QCN
> >
> >
> > On Nov 30, 2015, at 10:55 AM, Doug Crompton <doug at crompton.com> wrote:
> >
> > Jeff,
> >
> >  I did go on to modify a DR1X and found problems with using the back
> > connector. I ended up modifying it the same way as the DR1 and it worked
> > fine with Allstar as a controller. Doing it the way I show in the mod works
> > on both the DR1 and DR1X.
> >
> >
> >
> > *73 DougWA3DSPhttp://www.crompton.com/hamradio
> > <http://www.crompton.com/hamradio>*
> >
> >
> > ------------------------------
> > To: arm-allstar at hamvoip.org
> > From: kd0qcn at aecimo.org
> > Date: Mon, 30 Nov 2015 08:32:10 -0600
> > Subject: Re: [arm-allstar] Yaesu DR-1X Interface
> >
> > Doug,
> >
> > I did read the howto on hamvoip.org.  I was really wanting to use the 15
> > pin connector on the back of the DR-1X.  You stated in the howto that you
> > did not have access to the DR-1X and you were unsure of how to interface
> > with that 15 pin.  That is what I'm trying to figure out as we are trying
> > to avoid cutting into the main harness inside the repeater.  Really all I
> > need is something as simple as pin 1 of URI to pin 2 of DR-1X etc...  I was
> > hoping someone had done this already as I hate to re-invent the proverbial
> > wheel.
> >
> > 73,
> > Jeff
> > KD0QCN
> >
> > On 11/30/2015 1:42 AM, Doug Crompton wrote:
> >
> > Did you read the howto on the hamvoip.org web page?
> >
> >
> >
> > *73 Doug WA3DSP http://www.crompton.com/hamradio
> > <http://www.crompton.com/hamradio>*
> >
> >
> > > From: kd0qcn at aecimo.org
> > > Date: Sun, 29 Nov 2015 23:57:48 -0600
> > > To: arm-allstar at hamvoip.org
> > > Subject: [arm-allstar] Yaesu DR-1X Interface
> > >
> > > Hi All,
> > >
> > > My club has put me in charge of setting up a RPi2 with Allstar and
> > interface that with our DR-1X repeater using a DMK URI. The problem I am
> > having is I am seeing some information on the DR-1 interface but not on the
> > DR-1X. The DR-1X uses the 15 pin plug on the back of the repeater. We are
> > not concerned with keeping the digital side of the repeater at this point.
> > Has anyone done this interface and might possibly have the schematic of how
> > you did it, or even something as simple as what pins you used?
> > >
> > > Thanks in advance for any help!
> > >
> > > Jeff
> > > KD0QCN
> > > _______________________________________________
> > >
> > > arm-allstar mailing list
> > > arm-allstar at hamvoip.org
> > > http://lists.hamvoip.org/cgi-bin/mailman/listinfo/arm-allstar
> > >
> > > Visit the BBB and RPi2 web page - http://hamvoip.org
> > >
> >
> >
> > _______________________________________________
> >
> > arm-allstar mailing listarm-allstar at hamvoip.orghttp://lists.hamvoip.org/cgi-bin/mailman/listinfo/arm-allstar
> >
> > Visit the BBB and RPi2 web page - http://hamvoip.org
> >
> >
> >
> > _______________________________________________ arm-allstar mailing list
> > arm-allstar at hamvoip.org
> > http://lists.hamvoip.org/cgi-bin/mailman/listinfo/arm-allstar Visit the
> > BBB and RPi2 web page - http://hamvoip.org
> >
> > _______________________________________________
> >
> > arm-allstar mailing list
> > arm-allstar at hamvoip.org
> > http://lists.hamvoip.org/cgi-bin/mailman/listinfo/arm-allstar
> >
> > Visit the BBB and RPi2 web page - http://hamvoip.org
> >
> >
> > _______________________________________________ arm-allstar mailing list
> > arm-allstar at hamvoip.org
> > http://lists.hamvoip.org/cgi-bin/mailman/listinfo/arm-allstar Visit the
> > BBB and RPi2 web page - http://hamvoip.org
> >
> > _______________________________________________
> >
> > arm-allstar mailing list
> > arm-allstar at hamvoip.org
> > http://lists.hamvoip.org/cgi-bin/mailman/listinfo/arm-allstar
> >
> > Visit the BBB and RPi2 web page - http://hamvoip.org
> >
> >
> > _______________________________________________ arm-allstar mailing list
> > arm-allstar at hamvoip.org
> > http://lists.hamvoip.org/cgi-bin/mailman/listinfo/arm-allstar Visit the
> > BBB and RPi2 web page - http://hamvoip.org
> >
> > _______________________________________________
> >
> > arm-allstar mailing list
> > arm-allstar at hamvoip.org
> > http://lists.hamvoip.org/cgi-bin/mailman/listinfo/arm-allstar
> >
> > Visit the BBB and RPi2 web page - http://hamvoip.org
> >
> >
> > _______________________________________________
> >
> > arm-allstar mailing list
> > arm-allstar at hamvoip.org
> > http://lists.hamvoip.org/cgi-bin/mailman/listinfo/arm-allstar
> >
> > Visit the BBB and RPi2 web page - http://hamvoip.org
> >
> 
> 
> 
> 