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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 16 May 2026
Antenna Calculator Links →
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
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Here's a quick line loss calculator to use
Il programma calcola l'induttanza di un avvolgimento monostrato in aria - The program calculates the inductance of a single-layer winding in air
These programs should work on any Javascript-capable browser
Hese calculations are theoretical and represent only the maximum achievable performance for a system
All Spectrum Electronic All Spectrum Electronics Hobby Kits and Electronics Supply
Dxengineering Ham Radio Equipment DX Engineering Ham Radio Equipment & Supplies
BA-Electronics Ba-electronics, a division of products, has added electronic components, test equipment, wire, and supplies to its product offering