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Half-dipole
The simplest antenna not only for VHF, CB and the like is bipolar the so-called Dipole, can be easily assembled at almost zero costs, but has some disadvantages, such as low gain and low directionality
post 15 May 2024
Antenna for UHF VHF Links →
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Based on formulas given in the ARRL Handbook
Dipolo grosso 435 MHz, 50 ohms
Antenna is the coaxial version of the J antenna J pole, see here. It consists of a radiating element of half wavelength
FM Dipole for 88-108 MHz 50 ohm
Si inspira al progetto sperimentale dello ZED Dipole per la banda amatoriale VHF
Folded Dipoles for VHF/UHF Yagis
How do I make my own VHF/UHF folded dipoles from aluminium tubing ?
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Based on formulas given in the ARRL Handbook
Antenna is the coaxial version of the J antenna J pole, see here. It consists of a radiating element of half wavelength
Si inspira al progetto sperimentale dello ZED Dipole per la banda amatoriale VHF
How do I make my own VHF/UHF folded dipoles from aluminium tubing ?
23cm Yagi Antenna building Finished antenna at 1275 MHz SWR under 1:1.5 at resonant frequency
50 MHz preamp Gain 26dB with the BFG135 Preamps for 144 and 430 MHz, for 50 MHz, the BFG135a is a cheap transistor and in my view rather strong. It is not easily damaged by static discharge or RF power. FG connection
30 Volt Computer Power Supply Stack A bonus was that i discovered that these did not need a standby load connected to the supply to keep them running just apply mains power and close the Start lead to ground