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Bazooka GP 1/4 lambda vertical for the 40m


Bazooka GP vertical a omnidirectional antenna for the 40m
post 25 Jan 2024
Bazooka GP 1/4 lambda vertical for the 40m

Antenna Bazzoka Links

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Double bazooka coaxial dipole broad-band, W5BGP
The inside sections, do not radiate, but act as quarter-wave shorted stubs which presents high resistive impedance to the feed point at resonance and tends to cancel reactance as frequence off resonant frequencies

Double Bazooka Dipole
consist of a half wavelength piece of coax RG58 with the shield split at the center and the feedline attached to the open ends

Antenne double-bazooka
The double-bazooka consists of 1/2 lambda of coaxial cable cut at its center or twice 1/4 lambda

Double bazooka Antennen
My measurements that I used successfully: Band: Coaxial length: 30m 9.77m 2.03m (30cm longer left to vote) 40m 13.99m 2.904m (30cm longer to vote) 80m 26.77m 5.41m


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

Atu balanced feeder antenna system

Atu balanced feeder antenna system An ATU has the advantage of bringing the feeder-antenna system to resonance, act as a band pass filter both on receive and transmit and a low SWR