ANTENTOP- 01- 2017 # 021

Two Helical Antennas for 160 meter Band

Figure 4

Design of the Second Version of the Helical Antenna

Antenna was tested in the Air. Transceiver with internal ATU may match the antenna on all of the HF bands. However the antenna was unstable for match on the 160 meter. Tuner Palstar AT1500CV (roller inductor) solved the problem. With this ATU the antenna worked stable on the 160 meter with SWR at transceiver's SWR- Meter 1.9:1. I found that the antenna had diagram directivity that differs from the old one. I could hear and work with some new countries with this antenna but some areas that I could operate with the old antenna were disappeared. However on 80 meter the antenna provided good operation with all states of USA, all Europe and European parts of Russia. The antenna worked well on the amateurs bands higher the 80 meter.

73!

Andre, VE3YXO

Figure 7

Two Wire Line on the Wall of my House Together with Balun and RF Choke

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