ANTENTOP- 01- 2012, # 016

Vertical Antenna for 80-, 40-, 20-, 15- and 10- meter Bands

PK-1- Russian Coaxial cable 77- Ohm

PK3- 3- Russian Coaxial cable 75- Ohm

Feeding terminals are chosen to best match of the antenna at all working bands. For the feeding terminals there were obtained: SWR at the 80- meter Band 3...3.5; SWR at the 40-, 20- and 15- meter Bands- no more the 1.5; SWR at the 10- meter Band- near 2.

Antenna made as an usual Ground plane antenna. Vertical Radiator made of aluminum tubes in diameter 20- 35- mm. Four counterpoises attached to the mast of the antenna with help of nuts insulators. Stub of the antenna is radiated so it needs to be away from any conductive subjects.

The antenna was tested at the UB5UG radio station from July 1960 and it was obtained quarter good results. Antenna works fine at 40- and 20- meter Bands. At the 10- and 15- meter Bands the antenna works satisfactory (DD of the antenna is radiated at too high angles). At the 80- meters the antenna works also quarter satisfactory.

Figure 2 Design of the Vertical Antenna for 80-, 40-, 20-, 15- and 10- meter

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