@ Colly0410
I am living in an area where BFBS (later called SSVC) Television was aired.
They showed "Top of the Pops", Blue Peter, family greetings, BBC and ITN news.
A no-name german company offered a small assy for DM 30,- (15,- Euros) which
could be easy connected with most of all TVs (tube and solid state!).
12 Volts DC and the remove of the coupling cap between video out
and audio-RF-in gives a great sound.
No switch!
Btw., the same company offered a similiar assy for the US-forces Television
(AFN - American Forces Network).
These units were sold in the shops in military bases. But not only there.
The power of these transmitters (UHF only) from the forces was very reduced
to the areas, where soldiers and their families lived.
The upcoming of low-price satellite television at the end of the eighties for wide
consumer fields was the end of these little stations with their local
news and greeting programs.
Best regards,
TV-collector