Yes I have understood Zero IF. at the output mixer there is directly audio frequency. OL is nearly equal at input frequency .
I have done some trying to transcribe in pratice.. I have selected 150Mhz on my generateur, but I can't find the exacte relationship between my input frequency, OL, image frequency.......on spectrum.
See an example screen, is somone can explain to me ?
Thank you 73 Franck