This interesting midwave tube receiver from the 1940's was intended for use on bicycles. Being a superheterodyne, it had good sensitivity and powered a loudspeaker. The IF was 455 kHz and the setup was quite compact.

This interesting midwave tube receiver from the 1940's was intended for use on bicycles. Being a superheterodyne, it had good sensitivity and powered a loudspeaker. The IF was 455 kHz and the setup was quite compact.