B210H British Thomson-Houston detector and low frequency amplifier triode valves

BTH B210H boxed MINT GBP 120 pair.

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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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