28-04-2021, 11:41 AM
(This post was last modified: 28-04-2021, 11:41 AM by pamphonica.)
The Avo valve data books with the switch settings, right from the first edition to the last, for the VCM163 used "Vf" to signify heater voltages for all valve types. The column is headed "Vf".
Jeremy. G8MLK. BVWS Chairman. British Vintage Wireless and TV Museum Friend.
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