02-09-2017, 01:51 PM
I have now completed the key by fitting a valve oscillator using at DL96 output valve. It gives a good loudspeaker volume. The LT and HT batteries (1.5 and 24 Volts respectively) plus the two transformers, are mounted below the base, whilst the loudspeaker is beneath the vibrating arm on top of the base.
Bob
Bob
