[Elecraft] OT: Audible hum from Astron linear power supply. Fixable?

[Bill Turner]

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On Sun, 14 Sep 2014 18:42:35 -0400 (EDT), Dale wrote:

>A stack of about a year's worth of QST magazines placed atop the power
>supply does the job here. I believe other magazines would also work.
>
>73, Dale
>WA8SRA

REPLY:

One must be careful which year QST one uses. Years ago QST had a
smaller format and would probably require a year and a half.  :-)

73, Bill W6WRT