I was monitoring the frequency of Bolzano Radio on 120.600 mhz AM with a cheap (15 €) RTL2832U SDR. As a former military pilot and now Glider pilot I'm always interested on these kind of communications.
I expected that Bolzano Radio was at 120.600 Mhz, but the RTL SDR does not receive anything!!
Fortunately the spectrum of more of 1 Mhz is also visible on SDRSharp and the trick is done:
Clearly on the screenshot it's visible that the Tower seems 10 khz off frequency.