B210H British Thomson-Houston detector and low frequency amplifier triode valves
BTH B210H boxed MINT GBP 120 pair.
Description
Pair of nice triode by BTH type B210H intended primarily as a detector and low frequency amplifier where resistance capacity coupling is employed. It is desirable to use a 120 Volts HT battery, a resistance, such as a grid leak of the order of 5 megaohm, being employed in series with the anode.
Both triode tested 100%
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