Right now, my FADA is still in direct A/V input mode, as I had trouble with doing the IF alignment procedure, tried more than once, where as the tuner DOES work, there is heavy RFI on channel 3, which is seen to a lesser degree on 4, and adding a rf amp helped even more, it did not make it go away completely, but when I did get a BT modulator for chan 7, I did find it free from RFI, but the tuner has contact problems on THAT channel
The instructions clearly says set to channel 9 when doing IF alignment on this set, but someone said that any chan can be used ( this is also reflected in later instructions for other sets ) , since the osc tube is removed and the signal fed in the aunt input.
For example, I just ordered a BT modulator for chan 11, if I can confirm that 11 works OK w/o any problems. Can't I use 11 in the alignment procedure where it says to use 9? will it make any difference?
https://i.imgur.com/HpMK2wJ.jpg
But then what to do with the BT mod chan 7? use it on my CTC-16XL? :p
interesting idea.
But it too has minor IF problems, that I don not have the equipment to adjust,
nothing really THAT bad, just red bleeding that will move with the fine tuning, perhaps I will try to fix SOME day!
But for the stromberg carlson x-21 , I do like the idea of feeding it UHF and having the ultraverter convert for it! I just have to be sure to find a modulator that IS uhf and not CATV . :p