04-09-2013, 03:45 PM
(This post was last modified: 04-09-2013, 03:47 PM by Robert Darwent.)
I should have mentioned this straight away in my earlier reply, but do not attempt to power the set via the mains without first connecting a modern substitute for the DEAC cell (the large yellow rectangular battery).
Without it the LT voltage will rise well above 1.4 volts and destroy all the valve filaments. German 1950s VHF mains/battery sets virtually all use a DEAC for LT voltage stabilisation.
A suitable modern alternative to the DEAC is a ni-cad D cell in a holder, which is the method I used with the Colette in the article.
Best regards,
Without it the LT voltage will rise well above 1.4 volts and destroy all the valve filaments. German 1950s VHF mains/battery sets virtually all use a DEAC for LT voltage stabilisation.
A suitable modern alternative to the DEAC is a ni-cad D cell in a holder, which is the method I used with the Colette in the article.
Best regards,
