Emanuele ???RE I decided to leave it alone, I give up.? ?Don’t do that, the radio is 99.777% ?, just some strange thing left. It’s ok to take a break and let the brain cool down.

I follow your comments again; all very clear.??

In my sleep, it came to mind that the main dial scale must be set properly. You no doubt have checked this, but maybe there was some slippage since then?

So ?maybe there are set screws on the dial scale hub? .. that might slip?

Also, you must know this but, at low frequencies, the RF tanks will tune much narrower, and so a bit of? unwanted offset will knock the signal down greatly.

Why not do a test: instead of setting the RF band 1 trimmers, at 1400 , set them at ?the low end 600,700? ..and see if they [RF1 and mixer tanks] can be tuned down there by turning the trimmers CW, and if it “aligns”, then try the ?real sensitivity at the low end using the antenna.? If it won’t align there, maybe take a scan of the tanks responses at say 600KCs so you can see if they are too high or too low. I hope you understand my wording. Then you might learn if it ?“tunes low” ?all over the band, or one end is low and the other hi. ?Since you have that Fancy HP gadget you must be able the verify the resonant curves of all tanks at the Hi and the Low end of the band{s}. OF course this is not aligning, it is testing ?to find out where things go wrong. ????????

Must be late there by now spero che tu stia dormendo bene