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Antentop is FREE e-magazine devoted to Antennas and Amateur Radio an
Special page devoted to
Vertical UN7CI for 7, 14 and 21- MHz
Vertical
UN7CI for 7, 14 and 21- MHz: by Boris Popov (UN7CI)
Petropavlovsk, Kazakhstan
The antenna was designed for amateur's bands' 7, 14 and 21-MHz. Antenna fed throw 50-Ohm coax. The antenna has SWR less the 1.5:1.0 at any band. Antenna has good efficiency and low angle of radiation at vertical plane (that is good for DX-ing). Only one power relay is used to switch a working band.
PDF file, 220 KB (ANTENTOP-01-2008, pp.: 35- 36)
Contents for AntenTop 01- 2008
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Last Updated:
February 4, 2018 21:11
