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High Performance Antennas for Field Day
Versatile broadband wire antennas
post 02 Jun 2024
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Dipolo HF 160m/40m/20m/15m
Si tratta di un dipolo che permette di operare su 4 bande radiantistiche HF
Dipolo trappolato 20m e 40m
Le trappole risonanti a centro banda 20m ,cioe' a 14.150, sono risultate composte da 5 spire di RG316 avvolte in aria con diametro della spira piu' piccola 40mm e quello della spira piu' grande 50mm
Dipolo filare 5/20/40m
Una semplice antenna,utilizzando materiale di uso generico,e quindi di facile reperibilita
End-fed halfwave for 10-20 meters 5-band compact antennaThis fishing pole collapses down to 15.5 inches, so it's very compact and portable
Frecuencias de 7.1 Mhz y 3.650 Mhz
This dipole antenna is very good for those with small spaces.The antenna is designed with two load coils that cut the frequency in a given band
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Si tratta di un dipolo che permette di operare su 4 bande radiantistiche HF
Le trappole risonanti a centro banda 20m ,cioe' a 14.150, sono risultate composte da 5 spire di RG316 avvolte in aria con diametro della spira piu' piccola 40mm e quello della spira piu' grande 50mm
Una semplice antenna,utilizzando materiale di uso generico,e quindi di facile reperibilita
This dipole antenna is very good for those with small spaces.The antenna is designed with two load coils that cut the frequency in a given band
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