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Antenne verticale Topfkreis
La costruzione è del tutto simile a quella descritta per la Sperrtopf, con l'unica variante del fissaggio del bocchettone
post 08 Aug 2024
Antenna for UHF VHF Links →
A Portable Antenna for Mode B and J Satellites
A 4:1 balun, constructed out of a 1/2 wavelength of RG-58 coax is used to couple the T match to the 50 ohm feedline
A turnstile antenna for 2-meter ARDF
Designed by Jay Hennigan, WB6RDV, these are the same type of antennas I've been using for about seven years for both championship and practice ARDF These are horizontally polarized omindirectional antennas as specified in the IARU R1 ARDF rules
Antena Direcional para UHF - 430 - 450mhz
The boom should be aluminum and rectangular. The diameter used in the antenna tested for this project was 2x2 cm and the total length was 1.80 meters
Antenna for 2m and 70cm
Small antenna for 2m and 70cm, after using it you can roll-up the antenna, very nice on holidays
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A 4:1 balun, constructed out of a 1/2 wavelength of RG-58 coax is used to couple the T match to the 50 ohm feedline
Designed by Jay Hennigan, WB6RDV, these are the same type of antennas I've been using for about seven years for both championship and practice ARDF These are horizontally polarized omindirectional antennas as specified in the IARU R1 ARDF rules
The boom should be aluminum and rectangular. The diameter used in the antenna tested for this project was 2x2 cm and the total length was 1.80 meters
Small antenna for 2m and 70cm, after using it you can roll-up the antenna, very nice on holidays
Antenna splitter per VHF-UHF per quattro ricevitori Chi dispone di una sola antenna e vuole collegarvi più di un ricevitore necessità di uno splitter
Amateur radio kits by Kanga US
50MHz to 28MHz RX Converter The concept of the rx converter is quite simple and nothing really new. the local oscillator is a standard colpitts crystal oscillator producing the 22mhz lo signal