EVALUATION AND PREDICTION OF MAXIMUM USABLE FREQUENCY (MUF) OVER BANGKOK
STANFORD RESEARCH INST MENLO PARK CA
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Two sets of corrected monthly median MUF vertical incidence predictions are compared against the monthly median observed vertical incidence sounder values over Bangkok for the period April 1965 through August 1966. The comparison showed the definite improvement in accuracy that is the primary requirement for new corrected predictions for 1967. New predictions for 1967 were derived by adding a correction to values obtained from a method developed by Stanford Research Institute, long-term predictions can be prepared for several years in advance with this method. The predictions for 1967, corrected for the Bangkok area, typically vary between about 3 MHz in the early morning to about 10 MHz in the late afternoon. The predicted MUFs for 1967 average about 1 MHz higher than 1966, which means that the 1967 operating frequencies may be increased by about 1 MHz without increasing the expected communication outage.
- Radio Communications