[AMPS] heater surge

[John Nelson]

Message text written by Peter Chadwick

> So using DC on the fils seems best, as advised by GW4FRX. <

More accurately, "as adopted and written up by GW4FRX for amateur use based
on the experiences of large-scale industrial and professional UK users". I
didn't originate the technique for small tetrodes: the UK Ministry of
Defence did.  

73 John



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