[Luxman1050]

Al you've lost me again a variac can regulate AC voltage I'm sure of that. Unless your talking about something completely different!

Well your doing well age wise and Radios are a new thing to me so I'm still trying to understand how it all works as from a reception point of view how to build a good quality aerial which has numerous possibilities depending on frequencies how all the different valves work in unison including the linking of resistors and capacitors as well as those attached to the tuning frequencies which alot of people say leave alone otherwise you'll need to retune it which is another specialist area all of it's own. That's what stirred up my interest.

Wish I could say I'll be around at 73 I'll be lucky to last the next 3 maybe 5 years at 54.

And yes it hurts like hell at times this end. But all this fiddling with valve pre amps amplifiers and radios etc keeps me going. By the way I'm not an electrical engineer hence I will get things wrong and have had a few shocks as well.

Thanks for info will get the 770 spec sheet.

Cheers Chris