630m (472 kHz) - 10 m (29 MHz) antennas, propagation, operating, etc
25 / 133Magic band discussion - antennas, propagation, operating, etc
24 / 1062m & 70cm discussion - antennas, propagation, operating, etc
23 / 15623cm, 2.4/3.4/5.7/10/24/47 GHz and above - antennas, propagation, operating, etc. Includes Optical communications, with light,
71 / 258Non band-specific propagation & Solar Cycle discussion
24 / 92