Cossor BT185 Beam tetrode - diyAudio
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Old 26th February 2012, 07:00 PM   #1
diyAudio Member
Join Date: Nov 2010
Location: England Hertfordshire
Default Cossor BT185 Beam tetrode

Hi all,

I recently was given an old cossor BT185, its in good condition and looks brand new, strange story behind it, but anyway. My question is, has anyone ever used one, or know any good schematics for one? I know it has a top cap for the anode which im really not sure about, and i havnt really found alot of other information out on them other than they were for output tubes for TV sets in the 1850's, B+ of ~300v.

Any help with this will be very appreciated.
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