> Channel 5 is on channel 37 (in the London area at least...the channel list I
> have is from 90/91 prior to it - on all the transmitters listed there is
> generally at least a 3 channel difference between the stations [eg Crystal
> Palace: 23/26/30/33 for ITV/BBC1/CH4/BBC2] which I presume is to prevent
> interference).
>
> Thus I suspect that CH5 interferance could well be the problem; as I have with
> one of my video players. I also believe the modulator has a tendency to
> wander frequency (or was that the ZX81/2). Tho' I did have a washy-like
> output that improved after I had re-seated (pushed back in) the chips on the
> QL (de-static-adize yourself first! - by touching something earthed).
I've just used my video to display frequencies, and used
http://www.bnoack.com/index.html (a veritable mine of info) to get Bandwith,
etc, and came up with:
Chan CH Freq Bandwidth Video Sound
ITV 23 487.2 486-494 487.25 487.25
BBC1 26 511.2 510-518 511.25 511.25
CH4 30 543.2 542-550 543.25 543.25
BBC2 33 567.2 566-574 567.25 567.25
QL 36 590.4 590-598 591.25 591.25
CH5 37 599.3 598-606 599.25 599.25