i connected with Maxwell yesterday on LinkedIn. Seems like a good bloke.
Did you ask him how it worked? He refered to the card as a microphonic device, back in the 20's valves were microphonic due mainly to the heater being the cathode, flick the envelope and it would fly into oscillation, fascinating. Sil
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Be aware I'm moderated because I complained about persistent trolls to Chet, folowing me round and got same treatment as perpetrators..This is the third time, You aint doing this again.
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