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Antentop is FREE e-magazine devoted to Antennas and Amateur Radio an
Special page devoted to
Two Bands 144/430- MHz Antenna
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ANTENTOP- 01- 2011 # 015 |
Two Bands 144/430- MHz Antenna |
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Vladimir Semenov, RU4SJ |
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It is very simple two bands antenna that do not require
tuning when it made according to the Figure 1. Upper rectangle part of
the antenna made of a copper tube by diameter 6.7- mm. Lower whiskers
of the antenna made of iron road in diameter 5.3- mm. The antenna
is fed by 50- Ohm coaxial cable. |
Near the feeding terminals an RF- choke is installed. This one made traditionally
for hams. Several ferrite rings are placed on the coaxial cable.
There were used two ferrite rings with permeance
50 and one ring with permeance 2000. |
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Figure
1 Two Bands 144/430- MHz Antenna |
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View of
the Antenna |
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Last Updated:
February 15, 2018 22:36
