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Quick Trapped 15-20m Dipole


Quick Trapped 15-20m Dipole

The traps were tested using a coupling loop to the homebrew antenna sweeper and with a little squeezing, they tuned to 21.1 MHz

post 14 Dec 2024


Coils Traps Antennas Links

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La nobile arte di costruire le trapple Hf
L'operazione di sintonizzazione avviene scostando tra loro, leggermente, le spire dell'induttore

W4DEX low LF frequency
This is an easy to build coil with variometer

Single-layer Coil Inductance and Q
This single-layer coil inductance calculator uses the Lundin's formula [5] for which the maximum relative error is stated to be less than 3 ppm

Air Core Inductor Inductance Calculator
Calculates the inductance of an air core inductor

Antenna Trap Design
Enter desired frequency MHz, Results inductance L uH Capacitance C pF


Psion ham software

PSION Greyline Clock PSION Greyline Clock v. 1.0 is a UTC/Local clock showing sunlight/darkness area on the world map

Radioassistance

Radioassistance Radioassistance E Kenwood Dealer, vendita ricetrasmittenti, antenne, parti di ricambio, elettronica

SunCalc

SunCalc SunCalc - sunrise, sunset, shadow length, solar eclipse, sun position, sun phase, sun height, sun calculator, sun movement, map, sunlight phases, elevation, Photovoltaic