NVIS Antennas What Is It?
Post date: Jul 03, 2013 3:50:21 AM
The usable frequencies for NVIS communications are between 1.8 MHz and 15 MHz. The most common bands used in amateur radio are 3.5 MHz at night and 7 MHz during daylight, with experimental use of 5 MHz (60 meters) frequencies. Broadcasting uses the tropical broadcast bands between 2.3 and 5.06 Mhz, and the international broadcast bands between 3.9 and 6.2 Mhz, Military NVIS communications mostly take place on 2-4 MHz at night and on 5-7 MHz during daylight.