Also try bypass caps on the output leads of the Astron supply. You might
also wrap the power supply leads around a ferrite rod or through
a toroud core, or use some of those snap on chokes. I've heard,
via this reflector, that Astron supplies can be RF sensitive.
73, Bob WB2VUF
"Dr. Gerald N. Johnson, electrical engineer" wrote:
>
> Add some .001 mfd capacitors across audio lines, such as at the radio
> and at the voice keyer card. Also at the power supply line and load
> terminals. Use disk ceramics, tiny low voltage ones for the audio, more
>
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