630m (472 kHz) - 10 m (29 MHz) antennas, propagation, operating, etc
19 / 117Magic band discussion - antennas, propagation, operating, etc
9 / 542m & 70cm discussion - antennas, propagation, operating, etc
14 / 8323cm, 2.4/3.4/5.7/10/24/47 GHz and above - antennas, propagation, operating, etc. Includes Optical communications, with light,
38 / 190Non band-specific propagation & Solar Cycle discussion
12 / 70