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A antenna for 435 MHz
This antenna is nothing more than the coaxial version of the J antenna J pole, see here. It consists of a half-wavelength radiating element, the electrical equivalent of the half-wave dipole, but fed by a tip
post 05 Feb 2024
Antenna for UHF VHF Links →
Array 2 yagi 5 elementi VHF
Le caratteristiche sono queste 5-Element 28-Ohm-Type Boom 2m, Gain 9dBd F/B > 20dB
Big wheel 432 Mhz
Simile ad un trifoglio, in parallelo nonche' in fase e posizionati a 120 gradi fra loro,coprendo cosi' una circonferenza virtuale
Built and tested his the antennas
These are mainly airs for UHF and SHF, for some in circular polarization satellite traffic requires
155
Le caratteristiche sono queste 5-Element 28-Ohm-Type Boom 2m, Gain 9dBd F/B > 20dB
Simile ad un trifoglio, in parallelo nonche' in fase e posizionati a 120 gradi fra loro,coprendo cosi' una circonferenza virtuale
These are mainly airs for UHF and SHF, for some in circular polarization satellite traffic requires
Ferrite Shop Ferrite-shop on-line shop, cable clamps,toroids, cable cores, technic,ferrite material choice
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