Height Gain Measurements at VHF and UHF Behind a Grove of Trees

Results are reported of horizontally polarized signal strength méasurements at frequencies of 82, 210, 633, 1280, and 2950 mcps. The measurements were height-gain runs made behind a grove of liveoak and hackberry trees in full leaf. The site was selected so that propagation took place over approximately the same path near the receiver terminal at all frequencies. Measurements were repeated at several distances behind the grove of trees. Theoretical analyses are reported for several assumed cases for comparison with the field measured data. Exceptionally good agreement was found in many cases.