Quote:
Originally Posted by inaxeon
That PM5580 is interesting. The IF looks not to be spectrally inverted so I guess that up-converter (which clearly has been nicked) would be a low-side heterodyne converter.
Anyone know if that is standard for French systems? I have never seen that before! Or am I reading all of this upside-down?
|
The standard IF channel for French system L receivers was 32.7 MHz vision, 39.2 MHz sound, so that it was non-inverted, as it were, in contrast to most other standard IFs, which were inverted. (The exceptions were those for systems A, E and L.) Thus to the extent that standard receivers IFs were also used in modulators, it would not be so surprising to find the non-inverted channel used for system L.
Cheers,