Using Hedghog Mk1 as a modulator
I built two Hedghog Mk1's a couple of years ago and very good they are too!
They have a 405 line video output socket, but it would be handy to be able to feed 405 line baseband video into the unit and use it as a stand alone modulator. The idea being to use VHS tapes recorded in 405 directly.
Looking at the circuit of the Hedghog, analogue video is fed into pin 9 of the modulator chip, IC5 (MC44BS373).
Could external video be fed in at the same point via a blocking cap and a level control pot, or is it not that simple?
I'm not sure what other inputs the mod chip needs which might not be present without a 625 line input to the unit.
Many thanks
Nick
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