telefunken: 686WK; Super

It agree with Jacob. Really, 2A3 excellent replacement AD1 as the prices for them differ in 10 times. And if to take 6C4C - that at 15-20 time. And here GU15 - rare enough lamp, though also not so dear.

In German receivers often it is necessary to change End-tubes and kenotrons, including establishing tubes with other pressure of heat (tubes, distinct from îêòàëüíûõ and finger-type, in Russia to get difficultly). To lift a pressure up to 6,3 volt it is possible the small toroidal autotransformer.

As to Telefunken 686 WK such receivers at us meet very seldom and AD1 to buy much easier, than such receiver...

P.S. What is "Pollin"?

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