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AMATEUR STATION B

Station B was located at a single-story home in a suburban residential neighborhood. The operator controlled transmissions from a room inside the house. Measurements were made with respect to two antenna systems

(1) Vertical Radiator

The first antenna used was a vertical, steel, radiating tower (height about 16 m) that can be used for transmitting on a number of bands between about 1.8 and 50 MHz. The antenna approximates a quarter-wave resonator at 3.8 MHz, and measurements were made in this frequency band. This antenna was mounted in a side yard between the operator's house and a neighboring home. Ground rods were buried approximately two feet from each corner of the radiator. Results of measurements with respect to the vertical radiator are given in Table 10.

(2) Yagi Antenna

The other antenna studied at Station B was a five-element, Yagi HF beam antenna with a boom length of about 7.3 m. This antenna was one of three Yagi antennas located on a tower mounted on the roof of the house. The Yagi antenna used in the survey was approximately 12 m above ground level. Results of measurements made for the Yagi antenna are given in Table 11.

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