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New Helix Antenna Design
Reflector Loop Dia: 10.66" The reflector is positioned 0.375" ahead of the start point of the first helix turn, first 4 Turns: 10.32", Next 7 Turns: 8.68", Last 12 Turns: 8.40
post 10 Jul 2024
Helix Antennas Links →
2m-70cm-quadrifilar-helical-antenna
Build a pair of QHAs, one for 2 meter and one for 70 cm. A diplexer is of course needed to connect both to the single antenna connector of a dualband radio
2.4Ghz Helix antenna
Antenna especially for frequencies in the range 2 - 5 GHz this design is very easy, practical, and, non critical
2400 MHz Helix Antenna
This antenna is easy to build and suitable for broadband work, satellite work and terrestrial work
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Build a pair of QHAs, one for 2 meter and one for 70 cm. A diplexer is of course needed to connect both to the single antenna connector of a dualband radio
Antenna especially for frequencies in the range 2 - 5 GHz this design is very easy, practical, and, non critical
This antenna is easy to build and suitable for broadband work, satellite work and terrestrial work
Linear loaded short dipole 21Mhz For my amateur radio activities on the HF bands I only have a 3.6 m wide balcony available for antennas. After some study I decided to experiment with a shortened dipole for the 15 m band
Rx antennas 4Square Rx Vertical Array My frequency design of 1.825 MHz a 90 degrees line would be 33,70 metersinstead of the previously calculated 33,27 m
A simple SWR Meter is to be used at HF An SWR meter provides information about how well matched is your antenna with the transmitter and how well power is being radiated