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After three years of experiments with various home-built mono-band antennas, I installed a short Kelement 10/15/20/40m trap dipole in inverted V configuration on the roof of my city appartment (I use the 400W version, a 2kW version is also available).
I was looking for an inexpensive tuner-free HF antenna which could cover 80-10m including WARC bands, mainly for digital use, so I did not require particularly high power handling. I have been intrigued by the TFD design and found B-Square Engineering's offering which is optimized for amateur bands.
First, I listened to 40, 80 and 160 and switched between my old 80 meter Windom and the new one. The bands seemed more “alive” and signals received with the NI4L were several db stronger, even from areas that favored the 80 meter Windom orientation. I then worked a station on 160 with a 599 report.
The antenna is designed to handle 400W key down (CW) or 500W PEP (SSB). The starting point of the antenna is the classic off centre fed dipole. The overall length of the antenna is 20.28m or 66ft, with a feed point 1/3 of the way along. This gives two legs of 13.52m and 6.76m and a feed point impedance of around 200-300Ω.
5 dni temu · Join my friend Tom VA3WBA and myself as we test the Diamond HFV5 Compact Dipole ham radio antenna in a Parks On The Air activation.
5 cze 2021 · Here is a simple antenna calculator for two popular forms of ham radio HF wire antennas: the horizontal dipole and the inverted "V". (Updated June 5, 2021) The Antenna Calculator for Half-Wave Dipoles
REVIEWS of the ProMaster is a multiband HF vertical antenna for base or portable that uses a balanced OCF dipole system with a very tunable SWR on 10-80 meters and an option for 160M that uses no radials.
