From Free Knowledge Base- The DUCK Project: information for everyone
196 bytes added,
05:20, 11 November 2015 The following lines were added (+) and removed (-):
While the 20-meter band and higher frequencies are not significantly attenuated by D layer energy absorption due to their smaller wavelengths, absorption at lower frequencies is usually too severe for DX. While the 20-meter band and higher frequencies are not significantly attenuated by D layer energy absorption due to their smaller wavelengths, absorption at lower frequencies is usually too severe for DX. You can expect the 20-meter band to work to some extent both day and night. * Frequencies above 20-meter up to MUF propagate better at day.* Frequencies below 20-meter propagate better at night.