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Hi,
Try changing the RF channel on your
modulator,is it then any different.
If you've got say UK system I 6MHz
sound vision spacing set being fed by
a B/G 5.5MHz modulator the video will be there but almost no audio.
Don't forget most modulators
are double sideband whereas the
original TV transmissions weren't.
You'll get smeary video and some audio
if tuned to the lower sideband,just fine tune
up as far as it will go for best pic and sound.
Another possibility is you're tuned to a
modulator harmonic.If set say to band3/high band Channel E5 video carrier
175.25 MHz(same as US Channel 7) the
third harmonic will be at the low end of UHF and not give a good picture if the set is tuned there by accident.
Hope that's of some help.Make sure you've set them to a definite channel
and then try and find on the TV,some modulators can have vague instructions.
Does the modulator have switchable audio to go from
5.5 to 6..or even 6.5 system D,E.Europe?
Don't twiddle anything in the TVs yet..
We're at the opposite ends of the Iberian peninsula,
I'm near Faro in Portugal.
Hugh
Last edited by Mr Hoover; 04-12-2019 at 12:56 PM.
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