[EdHolland]

Thanks, Paul - I'll let you know.

...This is a wonderful community of friends

To answer the AB5 question, I have a couple of UK sets, in particular, a Ferranti 125 very much like this example:

https://www.snellingsmuseum.co.uk/artefa...rranti-125

Series string heaters (100mA), and a large dropper resistor take care of the 240V. This radio uses the U series valves with the B8A base - something of a short-lived offshoot, for example the output valve is the UL41 heater 45 Volts at 100 mA http://www.r-type.org/exhib/abc0004.htm.

You do get quite a bit more HT, which is a benefit for the audio output, but things do get warm, even on the large chassis. Mine is unrestored (but worked well when I got it). I'm sure it will get some attention eventually.

Mrs H should be collecting the Zenith during a lunch meet-up with our friend today.