[arm-allstar] 1KHZ whine

[Doug Crompton]

John,

 I run many DMK-URI's and I have not had that problem except on one and
that was a proximity problem to a power supply. The problem is not coming
from the DMK-URI it is being introduced into the DMK-URI. I would not say
the DMK-URI is necessarily more susceptible than other FOBS though. I
suspect your DMK-URI is near a switching power supply or fan. Orientation
and distance will make all the difference. You need to monitor on another
node or with iax-rpt and move things around.


*73 Doug*

*WA3DSP*

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


On Wed, Apr 25, 2018 at 5:52 PM, "John Griffith via arm-allstar" <
arm-allstar at hamvoip.org> wrote:

> Hey everyone, I've never been able to completely get rid of an annoying
> 1KHz saw or square wave whine on transmit and or receive. Gotten close to
> where you really have to turn the volume up way high to hear it, but mostly
> noticeable ant normal levels. I hear it on other stations during their
> transmissions, and I ask them if they're running DMK URI's, and they all
> say yes.
> Has anyone else noticed this, and or has anyone dug for the source of it?
> I suspect URI, as this seems to be a common denominator.
>
> John N7OKN
>
> -----Original Message-----
> From: arm-allstar [mailto:arm-allstar-bounces at hamvoip.org] On Behalf Of
> "James R. Pilgram via arm-allstar"
> Sent: Saturday, April 21, 2018 2:35 PM
> To: BeagleBone Black ARM Allstar <arm-allstar at hamvoip.org>
> Cc: James R. Pilgram <jim.pilgram at gmail.com>
> Subject: Re: [arm-allstar] vpn and port forwarding
>
> I was using Verizon and it was a PITA.  Every billing cycle they would
> reset the mifi and I would have to physically have to turn it back on. My
> guru WH6AV put a "back door" on it and when they found it, they blocked it.
> I called the tech support to no avail.  They told me to pay the $500 one
> time fee or there's nothing they can do.  One tech told me that they can
> wave the fee for government, public service and police agencies.  Trying to
> convince them that ham radio is public service was a non-starter. I gave up
> and quit using it.
>
> Jim NH6HI
>
>
>   Original Message
> From: arm-allstar at hamvoip.org
> Sent: April 21, 2018 08:42
> To: arm-allstar at hamvoip.org
> Reply-to: arm-allstar at hamvoip.org
> Cc: jed at jedbarton.com
> Subject: [arm-allstar] vpn and port forwarding
>
> Hey guys,
>
> OK, so we are working on setting up an allstarnode on my repeater system.
> We're putting it right at the site hooked up to my scom 7330.
> So the only way we can get internet at the site is through cellular.
> Fortunately we have a solid connection up there with Verizon.  The big
> issue is port forwarding.  We obviously need to do that.  Anyone else on
> here have a similar issue?  I know that the ports need to see a public IP
> and often with cellular that changes.
> Any thoughts?
>
> Cheers,
> Jed.n1jbc
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