Hi,
now the idea is reality.
I have no filter at the output now because I want to make sure
that the signals produced by the mixer makes no noise in the
picture.
I'll make a broad band high pass transformer at the output
because there is a level loss at the moment.
In the pictures you see the FV1 tuned to ch4 and the mixer
with an external 5V supply and the standart converter with
ch1 output.
The other picture showes a noise free picture without noise.
(Sorry free hand without flash.)
Kind regards
Darius