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Antennas Slingshot 144mhz
The completed antenna is bi-directional.For 144.200Mhz calculator: 11808/144.200 = 81.88 inches 3/4 wavelength = .75 x 81.88 = 61.4 inches total element length per side
1/4 wavelength would be = 81.88 / 4 = 20.47inches or 1/3 of 61.4 inches. The vertical section takes 2/3rds of the total length of one side of the antenna element
The 90 degree bend will be at the 1/4 wave point on the total length.
post 06 Jul 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
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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
PIC-Keyer This project describes the construction of a real "QRP" keyer with a small microcontroller PIC 16F84, with slightly modified hardware also PIC16F62
Radioassistance Radioassistance E Kenwood Dealer, vendita ricetrasmittenti, antenne, parti di ricambio, elettronica
Conrad Electronic Electronic components online shop in German and Italian