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Semplice dipolo rotativo per i 12m e 17m


Un dipolo per i 17mt rotativo con un Balun 1:1
post 30 May 2024
Semplice dipolo rotativo per i 12m e 17m

Antenna Multibands Links

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Antena multibanda fuera de centro
Known as "La 14%", "OCD", "OCF" for off-center-dipole, or off center feed or simply Windom, it is an antenna with many variations

A Multi-band Dipole
A half-wavelength long at the lowest frequency you hope to operate. Using the formula 468 ÷ Frequency in MHz

Antenna 1946 da Louis Varney G5RV
Due versioni, una lunga 15.4m che risuona dai 40 ai 10m ed una lunga il doppio 31m che permette un ottimo funzionamento anche in 80m

Antenna morgain 40-80 mt
Antenna bibanda per i 40-80 m. puo' essere fatta anche per i 10 e i 20 metri e puo' fornire ottime prestazioni anche sui 15 metri, ma il pregio rimane la lunghezza dei soli venti metri lineari

Antena Rombica



Linear-loaded-short-dipole-21mhz

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

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

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