[arm-allstar] My Node is auto kerchunking

[Jeff Lehman]

Mine was doing that too today but mine are hubs. There are no radios attached to them. I was connected via iaxrpt and they started kerchunking. I disconnected and reconnected and and hit the transmit button and it finally stopped. Not sure what was happening.  

Sent from my iPhone

> On May 26, 2018, at 22:53, Joe Puma via arm-allstar <arm-allstar at hamvoip.org> wrote:
> 
> This can happen if your cos is using high to trigger and no signal is a 0v but it’s a floating ground. Or something like that. I’ve read some folks using a resistor to keep it pinned to ground when there’s no signal?
> 
> Joe
> Kd2nfc 
> 
> 
> Sent from my iPhone
> 
>> On May 26, 2018, at 10:11 PM, Doug Crompton via arm-allstar <arm-allstar at hamvoip.org> wrote:
>> 
>> Go into simpleusb-tune-menu. Select V - there will be lines at the boot
>> displaying COS input and COS composite. If that is showing KEYED when you
>> hear the keyup then the actual signal coming in on the COS line is
>> triggering the event. Perhaps there is a problem with the incoming COS
>> line.
>> 
>> Are you using usb or usbinvert in item J of simpleusb-tune-menu?
>> 
>> Perhaps the COS signal from your repeater controller is not going low of
>> high enough. If you are using usbinvert it must go low on signal and should
>> go down to very close to zero volts and above 2.5 volts with no signal. If
>> you are using usb then just the opposite.
>> 
>> Something is apparently triggering that line or it is sitting on the hairy
>> edge of transition.
>> 
>> 
>> *73 Doug*
>> 
>> *WA3DSP*
>> 
>> *http://www.crompton.com/hamradio <http://www.crompton.com/hamradio>*
>> 
>> 
>> On Sat, May 26, 2018 at 8:58 PM, "Rory Bowers via arm-allstar" <
>> arm-allstar at hamvoip.org> wrote:
>> 
>>> I don't believe this is the case Doug.  The node is connected to a Repeater
>>> Controller port.  The radio is a 100 Watt G.E. MASTR II Repeater Station.
>>> The repeater can be sitting with no traffic and suddenly the COS on the
>>> Node will kerchunk.  I am wondering if anyone else has experienced this.
>>> Thanks for the reply!
>>> 
>>> Rory, K5CKS
>>> 
>>> On Sat, May 26, 2018 at 7:49 PM, "Doug Crompton via arm-allstar" <
>>> arm-allstar at hamvoip.org> wrote:
>>> 
>>>> It is more than likely RF feedback. If you are using a Baofeng 888 you
>>> need
>>>> to get the antenna away from the radio - coax to an antenna 5-10 feet
>>> away.
>>>> The other option if it is a local node is to put it on a dummy load. 2 -
>>> 1
>>>> Watt 100 ohm carbon resistors would work fine.
>>>> 
>>>> In severe cases there is an rxondelay in simpleusb-tune-menu that delays
>>>> COS. By default it is 0. Each value up is an additional 20ms delay. This
>>> is
>>>> a realtime adjustment so you can raise it one value at a time to see it
>>> it
>>>> helps but best to eliminate the feedback problem.
>>>> 
>>>> 
>>>> *73 Doug*
>>>> 
>>>> *WA3DSP*
>>>> 
>>>> *http://www.crompton.com/hamradio <http://www.crompton.com/hamradio>*
>>>> 
>>>> 
>>>> On Sat, May 26, 2018 at 5:41 PM, "Rory Bowers via arm-allstar" <
>>>> arm-allstar at hamvoip.org> wrote:
>>>> 
>>>>> I have not been able to figure this one out.  My node is "auto
>>>>> kerchunking".  I turned the IDer off and set the ID time interval to 0.
>>>>> With no connections it still kerchunks itself.  I have not determined
>>> the
>>>>> time interval yet.  Any ideas?
>>>>> 
>>>>> Rory, K5CKS
>>>>> _______________________________________________
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