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A Modified Petlowany Antenna


It is essentially a very short dipole with spiral-wound coils at each end. Each coil contains a quarter wavelength of wire at the desired antenna frequency
post 28 Jan 2024
A Modified Petlowany Antenna

Antenna Vertical Links

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My big vertical antenna project
The antenna project, specifically a DX-Engineering, Model DXE-MBVE-1, 43 foot mono pole vertical antenna

Progetto antenna verticale 10-20-40
Nel nostro caso uno stilo di poco piu' di 9,5 metri con un adattatore di impedenza alla base,puo' funzionare su tutte le bande HF dai 10 agli 80mt

Phasing short hf vertical antennas
The initial 40 meter phased array consists of two 10 foot high elements spaced one-half wave length apart


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