Hi all,
Thanks for your encouragement.
The speaker cone, yes some of it was found in the mouse nest. I'm not going to try to glue it back together
I had the PSU on the bench last night and sketched out the circuit. It is indeed a UU8 that is required. I hope that's not too expensive.
I had a quick look at the sound receiver, indeed it seems to use 6F12 pentodes and maybe a 6D2 detector. I will trace out the circuit later. Interestingly the sound receiver is powered from the PSU in the radio, so I will probably start with the sound first.
The timebase section is all 4V, so I guess it would be a PEN46 used for each timebase output. I assume the line generator is a T41??
Anyway, a low current 6.3V feed goes to the timebase chassis to provide a 6.3V CRT heater option. This set has a Mullard MW31-14 or MW31-7 (the label is damaged). I think one of the photos of other sets shows this too. I intend to fit an MW31-74, but I need a cavity anode to top cap adaptor. I will place a wanted add for parts required.
About the chassis generally, it looks like an aluminium version of a Baird pre-war chassis. Indeed I think the pre-war Baird TRF unit would fit directly in place of the vision receiver.
More to follow this weekend as I start to draw up the circuits.
Cheers
Andy