Endfed 6 - 40 Meter multiband Antenna

A trifilar wound, 9:1 UNUN unbalance to unbalance toroid matching transformer that will match the high input impedance of an end fed antenna
post 24 Dec 2021

Endfed 6 - 40 Meter multiband Antenna

Antenna End Fed Links

64



Antenna EFHW 20m/15m/10m
Attualmente utilizzo come antenna un semplice filo di 10 metri impiegando come contrappeso un filo di 5 metri buttato per terra

Antenna end fed per i 40 metri in soli 11 metri
L'alimentazione con cavo coassiale, da un solo lato è molto utile, per chi ha problemi di spazio

Antenna filare casuale
Antenne filari di lunghezza pari a 1/4 d'onda e oltre in riferimento alla frequenza della banda di trasmissione

Come ascoltare le HF con una filare piu' o meno casuale
Conviene quindi adattare l' impedenza con un piccolo adattatore in grado di coniugare antenne da 300 / 500 Ohm con l' ingresso a 50 Ohm

EFHW the end-fed half wave antenna
EFHW as an ideal temporary antenna for the hiker or camper. Ease of installation appeals especially to me because of my long life of sorrows trying to get lines through trees. I don't have a pitcher's arm and I've proven to be fairly inept with various slingshots and other antenna raising contrivances. Amazingly enough, just one good shot over a 20 foot limb can be all it takes to put up a quite functional 40 meter EFHW in an inverted vee configuration

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