Re: [amsat-bb] RF trips power supply

[Mike Murphree <murphree1@xxxxxxxxxxxxxx>]

Bill Sinbine wrote:
> 
> At 08:18 2000-08-16 -0500, Cordill,Jim wrote:
> >I know this is off topic, but I thought I would try here first.  I have an
> >Astron RS-12A power supply that
> >I use to power my satellite rig that has a problem, any time I key my HF rig
> >the power supply will
> >shut down.  It seems to do it on all HF bands, and even on low power.  My
> >other Astron power supplies
> >work fine.  Could it just be this model, or has an RF bypass cap failed
> >somewhere.  The HF rig is powered
> >from an Astron RS-35M and sets about 3 ft from the 12a on a shelf about 1.5
> >ft below the rigs which sit
> >side by side on the table above.
> >73 Jim KI0BK
> >
> 
> It sounds to me that with a only a 12 amp supply you are prob over loading
> the supply. Why don't you just hook it up to the 35 amp supply and then you
> won't have to worry about it.
> 
> I also float a battery across my supplies to handle any short power outages
> ( I live in Florida) that we might have and also it acts as a buffer so
> when I do run things hard the power supply is only really charging the
> battery. It works real good.

I have a heavy-duty Triplite supply that does this as well.  Too much
stray
RF in the shack and it crowbars immediately.  Get rid of the RF and it
works
fine...  I have a couple of the new switching supplies are they are much
more
resistant to this problem.

Mike N4CNW
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