[arm-allstar] Heartbeat STOP ?

[Luc Drolet VE2LUQ]

Hello Doug and David,

Thank you for your much appreciated advice,
I will do what you advise me and also I will change the USB cable for a Shielded USB cable

I will see in the next day if it will be correct

Thank you and good day to all of you,

73’s

Luc
VE2LUQ

> Le 10 avr. 2020 à 23:26, Doug Crompton via ARM-allstar <arm-allstar at hamvoip.org> a écrit :
> 
> In addition RF fields can cause this. Make sure your USB cable and or cable
> to the radio is not an antenna. Loop up any unused length and add ferrites
> to them.
> 
> If this happens, and it should not, simply pull out the USB cable on either
> end and reinstall and it will recover.
> 
> *73 Doug, WA3DSP*
> *http://wa3dsp.org <http://wa3dsp.org>*
> 
> On Fri, Apr 10, 2020 at 7:26 PM "David McGough via ARM-allstar" <
> arm-allstar at hamvoip.org> wrote:
> 
>> 
>> Hi Luc,
>> 
>> What type of USB fob are you using?
>> 
>> I've had this problem in the past with various different adapters. My
>> problems were traced to power surges (like during lightning storms),
>> disrupting the USB bus.
>> 
>> For power surges, make sure you've got a solid ground path all the
>> way from the RPi power source to the radio/repeater. A single-point ground
>> is ideal to minimize ground loops. I use a lot of DMK URI adapters and
>> I also added a ground wire to all my adapters in production use, as can be
>> seen here:
>> 
>> https://hamvoip.org/kenwood-TKR/P1030817.JPG
>> https://hamvoip.org/kenwood-TKR/P1030820.JPG
>> 
>> Minimize the length of the USB cables, carefully placing the RPi near
>> the radio/repeater. Also, using a DC-DC 5V power supply for the RPi is the
>> strategy I use, again tying the power supply negative lead to the
>> single-point ground.  I'll locate photos showing my typical configuration.
>> 
>> For me, this methodology evolved over many years of trial and testing.
>> Now, I've not any USB issues for several years.
>> 
>> 73, David KB4FXC
>> 
>> 
>> 
>> 
>> On Fri, 10 Apr 2020, "Luc Drolet VE2LUQ via ARM-allstar" wrote:
>> 
>>> Hello everyone,
>>> 
>>> I have a little problem with a Repeater,
>>> sometimes the green LED stops "Heartbeat"
>>> and to put it back at heart beat I have to restart the Raspberry Pi to
>> put it back on the air.
>>> 
>>> I don't understand why the heartbeat stops beating?
>>> 
>>> Thank you for your help
>>> 
>>> Luc
>>> VE2LUQ
>>> 
>>> 
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>>> 
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>>> 
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>>> 
>> 
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>> 
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>> 
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