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Ribbon antennas 433 MHz
A simple tape measure based 433 MHz 3 element Yagi antenna
post 03 Apr 2024
Antenna for 446 MHz Links →
Moxon's Rectangle PMR 446 Mhz
Questo tipo d'antenna e' ha il vantaggio del minore ingombro e della maggiore robustezza meccanica. La si puo' facilmente realizzare con del tondo d'ottone su un connettore SO-239
PMR446 Frequencies
Here are the frequencies of the 8 channels from 446-1 to 446-8. If you try to listen with a scanner
PMR Hentenna 446
Frequenza 446,05 MHz altezza totale 33,6 cm. larghezza 11,1 cm, loop piccolo 6,7 cm
The quarter wave ground plane
This GP antenna is easy to make, affordable for everyone
Simple antenna for PMR 446 MHz
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Questo tipo d'antenna e' ha il vantaggio del minore ingombro e della maggiore robustezza meccanica. La si puo' facilmente realizzare con del tondo d'ottone su un connettore SO-239
Here are the frequencies of the 8 channels from 446-1 to 446-8. If you try to listen with a scanner
Frequenza 446,05 MHz altezza totale 33,6 cm. larghezza 11,1 cm, loop piccolo 6,7 cm
This GP antenna is easy to make, affordable for everyone
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