|
A big problem with low band here was co-channel interference: In summer reception would often be ruined by patterning &/or distorted sound. It'd usually be 625 line TV stations from the European mainland coming in via sporadic E, most of these used negative video modulation & FM sound, the 405 British system used positive modulation & AM sound (Belgium used positive modulation & AM sound for their 625 lines system) & a 405 set couldn't resolve a 625 transmission properly. Received French 819 lines TV a few times with a split picture on UK channel 3, there was no sound though...
|