|
|
|
|
|
#1
08-11-2022, 03:25 PM
|
||||
|
||||
|
Hi to all,
Hi Bandersen, Your best chance to find a 405 line test generator would be to place a request on the UK Vintage (UKVRR) "Wanted" section. https://www.vintage-radio.net/forum/...splay.php?f=28 Tube-type generators were in full swing from the 50s/60s, OK, 405 started in 1936. 625 (BBC2) started in 1964 so 405 started waning. First generation color sets (1967-1970) were dual standard but complicated and not very reliable. When BBC1 & ITV were duplicated on 625/color/UHF, TVs became single standard and only shops who had been in TV repair for 20/30 years still had 405 test gear. 405 was finally switched off in 1983. With a bit of luck, an old 405 generator might have an external video input to use it as a System A Modulator. An interesting thread on another UK TV forum about a 405 video generator using a PIC microchip. 7 pages, last post 2016 : https://www.radios-tv.co.uk/communit...ern-generator/ Best Regards jhalphen Paris/France Last edited by jhalphen; 08-11-2022 at 03:38 PM. 
|
|
#2
08-12-2022, 01:33 AM
|
||||
|
||||
|
Quote:
generator. If you also search his videos he gets various 405 sets working. https://youtu.be/hf8c2mDopTI The Sony TV in the video is very useful for testing 405 circuits, the non monitor version is the TV 990UB but is fairly easily converted to video input. The previous model TV 9-306UB from 1966 is not as reliable as the 990,its on the cover of the Beatles Sgt Pepper album, bottom right behind a plant!
|
 |
|
|
Hybrid Mode
