I have used Astron RS-20, RS-7 and SS-30 power supoplies with my TenTec xcvrs.
I have never had a problem with RFI or anything else. As one other person said,
there is a ground lug and it should be used. All equipment in the shack should
be properly grounded. This is one of the most often neglected, yet very easy to
follow safety and setup steps in setting up a shack
Dave WA3MKB
-------------- Original message --------------
From: john <johnmb@nc.rr.com>
> I seem to recall some users reporting problems with Astron PS's and tentec
> gear (though for the life of me, I can't recall the details). I'm having a
> problem in that using a 50A Astron (new filter cap) results in a raspy CW
> sidetone note... sounds like 60hz but I cant be sure. It happens only when
> on higher powers (>60watts) on all antennas (including dummy load) on all
> coax, etc etc.
>
> When I switch to a different supply (in this case, another Astron as bench
> supply) all is well. The Omni VI that sits next to the Paragon on the
> operating table has no issues. Swapping all cables with the perfectly
> working Omni results in no change...Omni stays good, Para bad.
>
> The Para has just made a round trip to Tentec and has a clean bill of health.
>
> The Para and omni is being fed through identical TT magnetic breakers.
>
> Ideas? I'm stumped. I've got other supplies to use, but there should be no
> reason for this!
>
> John K5MO
>
>
>
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