29-01-2018, 10:15 PM
Hi.
I have now rewired the output valve base for a DF96, quiescent current is now 13ma with 90v HT . Performance is OK, there is a little less output before distortion sets in and only a small change of the bias resistor value was needed to get it to spec.
LT current is of course now 50ma less too so it's now time to put this one to bed.
I'm now more than happy with this rare set, I was receiving Caroline this afternoon very well indeed with the ferrite DF aerial.
I have now rewired the output valve base for a DF96, quiescent current is now 13ma with 90v HT . Performance is OK, there is a little less output before distortion sets in and only a small change of the bias resistor value was needed to get it to spec.
LT current is of course now 50ma less too so it's now time to put this one to bed.
I'm now more than happy with this rare set, I was receiving Caroline this afternoon very well indeed with the ferrite DF aerial.
