Hits
Antenna 20m and 40m band
The 40m band loading coil, which is clipsed on the the rod when required
post 26 Feb 2024
Antenna HF Portable Links →
ML-90 Vehicle Roof Rack Magnetic Loop Antenna
Highly efficient antenna, radiating 10dB to 14dB more than whip antennas. Equivalent to a 500 Watt transmitter with a whip antenna
Mobile on 136kHz
It's just under 3Mtrs long. It is mounted on the roof of the car on a cross member bolted to the luggage rails
Portable Vertical Antenna 20-30-40mt
The concept is to make the antenna self supporting and able to be broken down into small pieces for easy transport
Antenna Mounts
Thus the antenna should be attached in such a way to maximize what little ground plane a vehicle represents
54
Highly efficient antenna, radiating 10dB to 14dB more than whip antennas. Equivalent to a 500 Watt transmitter with a whip antenna
It's just under 3Mtrs long. It is mounted on the roof of the car on a cross member bolted to the luggage rails
The concept is to make the antenna self supporting and able to be broken down into small pieces for easy transport
Thus the antenna should be attached in such a way to maximize what little ground plane a vehicle represents
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