Hits
Homebrew Vertical Antenna 7 MHz
A major problem to overcome when using vertical antennas is ground losses. To put it simply, the Earth loves to absorb Radio Frequency energy especially in the near field close to an antenna
post 10 Apr 2024
Antenna Vertical Links →
My 160 meter antenna is an Inverted L
My 160 meter antenna is an Inverted L. The length of wire required at 1.835 MHz is approximately 127 feet
Multiband wire vertical
When 3 bands are used a center pole and 2 wires on the sides are used. The center wire will always be the lowest band and to the sides the other two or four bands
Multiband vertical HF antenna
The antennas may be installed at height near one meter above the ground. Resonance counterpoises should be used at this placement
New Shortened Vertical for 17-20-30-40 Meters
a 4-band, 20' vertical half wave that uses two loading coils with taps. The results appear promising
Shortened 160 meter vertical
Highly effective for 160-meter DX and local work, easy to build and adjust, very economical
188
My 160 meter antenna is an Inverted L. The length of wire required at 1.835 MHz is approximately 127 feet
When 3 bands are used a center pole and 2 wires on the sides are used. The center wire will always be the lowest band and to the sides the other two or four bands
The antennas may be installed at height near one meter above the ground. Resonance counterpoises should be used at this placement
a 4-band, 20' vertical half wave that uses two loading coils with taps. The results appear promising
Highly effective for 160-meter DX and local work, easy to build and adjust, very economical
Take off angle of horizontal antenna For horizontal polarization, the electric field will move sideways on a horizontal plane, while for vertical polarization it will oscillate up and down on a vertical plane
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
Calculo da Antena Bazooka A double bazooka antenna is a combination that has a complete coaxial wave multiplied by its velocity factor and a total end-to-end length of 1/4 wave for each side affected by another driver shortening facto