Hedghog L Standards Converter

[ppppenguin]

All UK colour sets from 1967 to 1969 were 625/405. They didn't do colour on 405 though it would be entirely possible to modify one. For example the Thorn 2000 chassis is modular, so if you have a spare decoder panel you could modify it to 405 NTSC and swap as needed. A true switchable set would be harder. Probably a modern PAL decoder and separate NTSC405 decoder using a spare decoder panel as a carrier.

The biggest outstanding question would be whether the IF response on 405 would be good enough for colour.