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5-Band Homebrew Wire Beam
- The 5-band hexbeam consists of three pieces of wire for each band. Two of the wires are deployed as a center-fed radiating element and the other acts as a director, making it a two-element beam for each band
post 08 Jan 2025
Antenna Vertical Links →
Verticale pour les bandes 80, 40 et 30m et 160m
It is a vertical mounted on the ground. The antenna operates roughly in 5/8 on 30m, half wave shortened on 40 and shortened quarter of wave on 80m. The impedance matching is performed at the base by an LC circuit L series / parallel C low pass configuration and a broadband transformer
Verticale senza trappole 14_21_28 without traps
Verticale per tre bande 20,15, 10 metri alimentata da un solo cavo coassiale da 52 ohm con tre whip radiatori
Verticale_40-20-15-10 only 3mt
Si tratta di una tipica antenna 1/4 d'onda, cioe' ad un quarto d'onda
Why Are Vertical Antennas Noisy?
E needed to establish resonance in helical antennas. Experience has indicated that a section of wire approximately one half wavelength long, wound on an insulating form with a linear pitch (equal spacing) will come close to yielded a resonant quarter wavelength
20m T-Monopole
20m T-Monopole short vertical antenna for 20 meters
187
It is a vertical mounted on the ground. The antenna operates roughly in 5/8 on 30m, half wave shortened on 40 and shortened quarter of wave on 80m. The impedance matching is performed at the base by an LC circuit L series / parallel C low pass configuration and a broadband transformer
Verticale per tre bande 20,15, 10 metri alimentata da un solo cavo coassiale da 52 ohm con tre whip radiatori
Si tratta di una tipica antenna 1/4 d'onda, cioe' ad un quarto d'onda
E needed to establish resonance in helical antennas. Experience has indicated that a section of wire approximately one half wavelength long, wound on an insulating form with a linear pitch (equal spacing) will come close to yielded a resonant quarter wavelength
20m T-Monopole short vertical antenna for 20 meters
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