Hits
A 70cm Big Wheel Antenna
This antenna was originally described in the VHF communications
post 07 Mar 2024
Antenna for UHF VHF Links →
Loop per i 144 mhz
L'antenna si compone di un normale connettore da pannello, saldato al cerchietto di rame argentato ai cui estremi andra' saldato un compensatore Philips
Magnetic Loop for the 2m band
This loop copper is made of 50cm of 4mm soft tubing. The capacitor of two 1mm circular plates with about 3cm diameter torch-brazed to the loop conductor
PMR 446 by Sigmund
Questo tipo d'antenna e' mutuato direttamante da una Yagi col vantaggio del minore ingombro e della maggiore robustezza meccanica
153
L'antenna si compone di un normale connettore da pannello, saldato al cerchietto di rame argentato ai cui estremi andra' saldato un compensatore Philips
This loop copper is made of 50cm of 4mm soft tubing. The capacitor of two 1mm circular plates with about 3cm diameter torch-brazed to the loop conductor
Questo tipo d'antenna e' mutuato direttamante da una Yagi col vantaggio del minore ingombro e della maggiore robustezza meccanica
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
Atu balanced feeder antenna system An ATU has the advantage of bringing the feeder-antenna system to resonance, act as a band pass filter both on receive and transmit and a low SWR