[arm-allstar] BF888 VOX wont turn off

[Jerry Wade]

RF interference is what was causing the same issue with my node.  I had the node too close to either my monitor, a fluorescent light or it was another radio.  I moved the node about 4’ away and all was good.  No other changes were needed. 

Jerry, KG5JBC

Sent from my iPhone

> On Jan 2, 2018, at 9:25 PM, Doug Crompton via arm-allstar <arm-allstar at hamvoip.org> wrote:
> 
> Chris,
> 
> One thing you have to be aware of is RF feedback keying which often
> happens when you make a node with a portable radio using the rubber duck
> antenna. I recommend either using an external antenna or a dummy load on
> these nodes. For a 1 watt radio the dummy load could be two 100 ohm 1 or 2
> watt carbon resistors or any combination that gives 50 ohms - four 200 ohm
> 1/2w etc. Must be non inductive. That would work fine around your house. If
> you need further range they make cheap small mag mount antennas with 10
> foot coax leads. This would get the RF away from the source. Mount the
> antenna on a metal surface to act as a ground plane.
> 
> 
> *73 Doug*
> 
> *WA3DSP*
> 
> *http://www.crompton.com/hamradio <http://www.crompton.com/hamradio>*
> 
> 
> On Tue, Jan 2, 2018 at 8:29 PM, Chris Souleles <csouleles at prodigy.net>
> wrote:
> 
>> I have been getting some random unintended transmissions from the node and
>> I really don't know if it has anything to do with the VOX or not.   At
>> times it would unintentionally key another node I was connected to and I
>> would get the courtesy tone back.  I am running TSQLCH on my node radio and
>> all the radios I contact it with so I have both the transmit tone and the
>> receive tone decode enabled.   This seems to happen more mobile, but also
>> happens in my shack but less often.  Since I couldn't figure out the VOX, I
>> decided to remove the mic from the BF888 and it seems better, but I have
>> not been mobile with it since I removed the mic.  Chris - W6CS - 73.
>> 
>> 
>> ------------------------------
>> *From:* Doug Crompton via arm-allstar <arm-allstar at hamvoip.org>
>> *To:* ARM Allstar <arm-allstar at hamvoip.org>
>> *Cc:* Doug Crompton <wa3dsp at gmail.com>
>> *Sent:* Tuesday, January 2, 2018 3:25 PM
>> *Subject:* Re: [arm-allstar] BF888 VOX wont turn off
>> 
>> Big question - is the VOX actually working? The PTT probably overrides it
>> in node operation??? Also try using the real BF888 programming software
>> and/or set the VOX timeout to 0 or some real low number.
>> 
>> 
>> *73 Doug*
>> 
>> *WA3DSP*
>> 
>> *http://www.crompton.com/hamradio <http://www.crompton.com/hamradio>*
>> 
>> 
>> 
>> On Tue, Jan 2, 2018 at 4:27 PM, "Chris Souleles via arm-allstar" <
>> arm-allstar at hamvoip.org> wrote:
>> 
>>> I have a couple BF888 radios that I use in nodes.  The other day I
>>> discovered the VOX was on.  Using CHIRP I tried to turn it off, but each
>>> time I read the file back from the radio, it was still on even though I
>> had
>>> uncheked the box in the file I sent to the radio.  I then tried to turn
>> it
>>> off manually by holding the PTT and MONI buttons while turning on the
>> radio
>>> in CH 1-5 (per the manual).  This also did not turn it off.  As an aside
>> I
>>> have used the manual method to turn off voice prompts and that works, but
>>> turning off VOX does not.
>>> Anyone else had this problem and know how to get it turned off.
>>> Thanks,  Chris - W6CS - 73.
>>> _______________________________________________
>>> 
>>> 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 web page - http://hamvoip.org
>> 
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>> 
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>> 
>> 
>> 
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