When I start RTL_FM I noticed that when I tune to:
sudo rtl_fm -f 120.5M -M am -g 35 -r 11000 - | aplay
I get 120.75mhz
so I tune to 120.25M and I get almost right on 120.5 AM
I am not sure how close I am on the actual freq I am trying to use, it seems this SDR tuner(assuming I am on freq) with a wire antenna cut for freq is not as sensitive as the air band transceiver with telescoping long range antenna which I am using for comparison.

Hoping that Xes has time to build Gnuradio and Gqrx in the repos so we have knobs to twiddle with, my attempt to symlink link the gnuradio libs met with failure