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Trapped five band EFHW SOTA antenna
I have been using a 40m End-Fed Half Wave EFHW antenna very successfully for the last few months and I wanted to extend the design to multi-band whilst avoiding the need to take a tuner along
post 18 Dec 2024
Coils Traps Antennas Links →
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
The Multi-Band Trap Antenna<
Coaxial cable antenna traps for a multi-band trap antenna
100
Disarming simplicity and an efficiency that is nothing short of incredible
This calculator requires the use of Javascript enabled and capable browsers
With the help of the K7MEM site I learned that the dipole would be about 12 meter long
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
Coaxial cable antenna traps for a multi-band trap antenna
Microsat Ham radio shop for ulari project, aprs, aprs with radio, bluetooth, gps, gsm, ham radio interfaces, weather,accessories, cables to radio
Amateur radio kits by Kanga US
Enigma Component Shop Cable & wire,capacitors, connectors, crystals/oscillators, filters, hardware,kits/modules,test & measurement