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The multiband 1.8/3.5 or 3.5/7 Mhz
Two-band operation may be obtained on 1.8/ 3.5 MHz or on 3.5/7 MHz
post 09 Jun 2024
Antenna Multibands Links →
A Co-ax Trap Dipole For 40, 30 and 20 Meters
Another way to minimise the loss of an antenna using coax traps is to use the minimum length of coax needed to achieve resonance
Antena morgain 40/80M
This antenna reduced dimensions for 80 and 40 Meters
Antena dipolo Multibanda
This dipole antenna functions as a half wave dipole in the 40 and 20m bands. In the 80m band it is a shortened dipole and in the 15m band it is a 3/4 wave dipole when the 40m 7Mhz thread resonates at 15m 21MHz
Antenna tipo G5RV
L'antenna e' alimentabile anche con linea bifilare TV da 300 ohm, ma e' preferibile che l'alimentazione avvenga per il tramite uno stub in linea aperta
El Dipolo G5RV
The G5RV antenna is expected to be the most popular among fans. Maybe because of the characteristic of being able to work in different bands
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Another way to minimise the loss of an antenna using coax traps is to use the minimum length of coax needed to achieve resonance
This antenna reduced dimensions for 80 and 40 Meters
This dipole antenna functions as a half wave dipole in the 40 and 20m bands. In the 80m band it is a shortened dipole and in the 15m band it is a 3/4 wave dipole when the 40m 7Mhz thread resonates at 15m 21MHz
L'antenna e' alimentabile anche con linea bifilare TV da 300 ohm, ma e' preferibile che l'alimentazione avvenga per il tramite uno stub in linea aperta
The G5RV antenna is expected to be the most popular among fans. Maybe because of the characteristic of being able to work in different bands
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