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50MHz-Lambda/2-Vertical


The matching circuit is the same as above with the following components, C 1 = 20 - 110 pF, variabel Mica capacitor,C 2 = 2 - 15 pF, variabel foil capacitor
post 28 Jan 2024
50MHz-Lambda/2-Vertical

Antenna 6 meter Links

102



Portable UHF 4 elements Yagi Antenna
The antenna has 7.5 dBd (9.6 dBi) gain at 436 Mhz and the SWR varies from 1.3 at the lower edge, almoust to 1.05 to midband, and 1.9 at 440 Mhz

Magnetic Loop Antenne 70cm
The consequence: I'm mostly qrv on the vhf/uhf bands or on the higher hf bands - with easy to move self-made antennas and low power

Yagi LFA 5 el. per i 6m 50.000-50.150 MHz/
Progetto per la costruzione di un'antenna Yagi LFA Loop Fed Array per i 6m, con boom da 4.9m

3 element Yagi antenna


Linear-loaded-short-dipole-21mhz

Linear loaded short dipole 21Mhz For my amateur radio activities on the HF bands I only have a 3.6 m wide balcony available for antennas. After some study I decided to experiment with a shortened dipole for the 15 m band

Rx antennas 4Square Rx Vertical Array

Rx antennas 4Square Rx Vertical Array My frequency design of 1.825 MHz a 90 degrees line would be 33,70 metersinstead of the previously calculated 33,27 m

A simple SWR Meter is to be used at HF

A simple SWR Meter is to be used at HF An SWR meter provides information about how well matched is your antenna with the transmitter and how well power is being radiated