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Helix Antennas for HF Mobile
20 meter helix antenna. The antenna is approximately 65 turns of #14 AWG THHN stranded wire wound on a 1 1/2'' cpvc coil form
post 14 Mar 2024
Antenna CB 27 MHz Links →
Easy to build Deltaloop for 27.555MHz 11m, DL5DBM
In this setup you have a horizontal polarisation, the total length of the wire is 11,07 meters
Easy to build compact quad antenna
If you want to communicate with mobile units, with vertically polarized antennas then you must use vertival polariztion
Extended Double Zeppelin 27.500
Full wavelength: 300 / 27.555 = 10.887 x 0.94 = 10.234 m Top sections of antenna: 0.64 wavelength: 10.234 x 0.64 = 6.550 m for each leg
Hb9cw for 27 mhz
For 27.500 Mhz lambda=10.9091 m 1/2 lambda/100=5.5 cm
80
In this setup you have a horizontal polarisation, the total length of the wire is 11,07 meters
If you want to communicate with mobile units, with vertically polarized antennas then you must use vertival polariztion
Full wavelength: 300 / 27.555 = 10.887 x 0.94 = 10.234 m Top sections of antenna: 0.64 wavelength: 10.234 x 0.64 = 6.550 m for each leg
For 27.500 Mhz lambda=10.9091 m 1/2 lambda/100=5.5 cm
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