Modulating VCRs?

[Outland]

Hey guys,

I was wondering if anyone has one of those VCRs that passes a MV protected signal along to the RF output without destroying the picture (clearly while not recording) that they're not using?

I've heard that the Panasonic PV-4962 can do this, but I've never seen one. My Panasonic VCR ruins the picture.

This seems like the appropriate forum for asking this, but I could be wrong. If so, my apologies.

Thanks all.