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Antentop is FREE e-magazine devoted to Antennas and Amateur Radio an

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Two Bands 144/430- MHz Antenna

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ANTENTOP- 01- 2011 # 015

Two Bands 144/430- MHz Antenna

 

 

 

 

 

Vladimir Semenov, RU4SJ

 

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.

 

Figure 1 Two Bands 144/430- MHz Antenna

 

 

View of the Antenna

 

 

 

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August 2, 2016 9:08

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