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Quadrifilar helicoidal antenna


Quadrifilar helicoidal antenna

A few variations of the antenna exist. Normally the circumference length of the loop is 1 wavelength, but 1.5 wavelength and 2 wavelength versions exist

post 05 Dec 2024


Antenna Calculator Links

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Types of Coax Cable and Line Loss Calculator
Here's a quick line loss calculator to use

Toroidi Amidon: quanto filo per l'avvolgimento
Il programma calcola l'induttanza di un avvolgimento monostrato in aria - The program calculates the inductance of a single-layer winding in air

VHF/UHF Antenna Calculations
These programs should work on any Javascript-capable browser

Link Planning for Wireless LAN
Hese calculations are theoretical and represent only the maximum achievable performance for a system


Antenna splitter per VHF-UHF per quattro ricevitori

Antenna splitter per VHF-UHF per quattro ricevitori Chi dispone di una sola antenna e vuole collegarvi più di un ricevitore necessità di uno splitter

Kits and Components

Amateur radio kits by Kanga US

50MHz to 28MHz RX Converter

50MHz to 28MHz RX Converter The concept of the rx converter is quite simple and nothing really new. the local oscillator is a standard colpitts crystal oscillator producing the 22mhz lo signal