Quote:
Originally Posted by Nuvistor
It uses delayed AGC to the Tuner.
V21 a and b are interesting, V21a is the sync separator but what exactly is V21b doing. It appears to charge up the 16uf in proportion to the video signal, is it some kind of noise cancelling required for VHF -ve mod systems?
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Hi Frank,
I'm sure you are correct, V21b is a noise canceller. The noise "spikes" are inverted by V21b to effect the cancellation. Some Continental sets used the EH90 as the noise cancelled sync separator.
DFWB.