In article , Dave Plowman (News)
scribeth thus
In article ,
tony sayer wrote:
OK - TV's have always been specialist - but most other machinery was pretty
simple.


I dont think TVs were THAT specialist when they were full o' valves


Now this is a good point. A TV of say 1960 or even earlier had pretty
straightforward circuitry so much so that I managed to convert a 1960's
era 405 line set to 625 lines and it worked very well.

How did you sort out the UHF tuner

Might not believe this but made one, UHF unit that was, bloody unstable then
bought one..


and FM sound?

Ratio detector using an EB91 ...

then tried intercarrier techniques and learnt all about vision buzz;(....



--
Tony Sayer