Not A Ferranti 146
What is it? Looks like a 146, but a completely different valve line up..
EF41, EBC41, EZ40, ECH42, EL41
Any info would be welcome.
I have looked through the Ferranti material I have and can’t match it.
I looked trough the Trader Sheets, and couldn't find a direct match.
TS # 1059 at least has a circuitry with the valves you mention.
I think Chris has it available, and if not, I can email it to you.
Hope this helps a (tiny) bit.
Browsing through the Molloy and Poole RTV red books did not give a direct match either, but I came across some diagrams with the same valve line-up. Not many chassis drawings there.
It looks if the chassis was meant for octal valves, but adaptors for the B8A range were probably factory fitted.
To understand the black art of electronics is to understand witchcraft.
Its most certainly factory. You'd just think there'd be some information somewhere ...
It's more than 10 years since I had a look inside a Ferranti 146, but your chassis layout does look very similar to the real thing apart from the valve types. I recall the trimmers being in the same location and the mains transformer looks similar and is in the same location as in the 146 too.
The trimmers are under the chassis in the 146, you can see the access holes in the top. They're still in roughly the same location in the mystery set.
the paper label at the edge of the chassis: that's where in later years Ferranti put the model/serial number - is it still legible? I have it on good authority that it's most likely Ferranti using up what chassis they had with what valves they had, so you might find it bears more resemblance to say, a model 105 than a 146.