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An introduction to the air cored coil




What are the advantages of an air core coil? its inductance is unaffected by the current it carries
post 23 Sep 2020


Coils Traps Antennas Links

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Le mie sloper per 80/160 Lunghe solo MT. 17,50
Disarming simplicity and an efficiency that is nothing short of incredible

Jar Capacitance Calculator For Coils
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Build an antenna for 40 and 80
With the help of the K7MEM site I learned that the dipole would be about 12 meter long

High-Q Coil Construction Techniques
n the past I used loading coils to improve the efficiency of a short dipole on 80m. The results, however, were disappointing. The main reason seemed to be the low Q factor of the coils

Build a 12/17 Meter Trap Dipole
Why a 12/17 meter rotatable dipole? Well, many folks have verticals for the lower bands, and multiband dipoles or beams for 20 15 and 10 meters.But often you don't have an antenna for the 17 and 12 meter bands