Help - Directly heated AC valves

[Hue Miller]

 janax at ALGONET.SE writes:

> You got rid of the hum by either grounding a center tap
>on the  filament winding or by..........

---at least one military radio, the AN/TRC-10, altho intended
mainly for field use, has an ACPS with no provision for any
hum reduction, just straight ac to the filament, no CT, etc.
nice distinctive note, OM !  almost like the RAC days!
(keep 'em humming! )        hue

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