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End-Fed Half-Wave Antennas


A classic historical aerial, the End-Fed Half-Wave Antenna or EFHWA, pronounced EFF-WAA. It is extremely simple to build, erect and use
post 02 May 2024
End-Fed Half-Wave Antennas

Antenna End Fed Links

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End Fed Wire Antenna for 10,15,20 and 40 meter band
A FT140-43 toroid to make myself a homebrew End Fed wire antenna,without the need for a tuner

End Feed Half Wave Antenna
E' un semplice L Tuner che adatta l'impedenza dai 50 ohm del RTX ai canonici 2450 dell' Antenna

End fed 6 - 40 Meter Multiband HF Antenna
End fed HF antenna The end fed feature adds portable convenience, but does present another issue.The problem with an end fed half wave antenna is that the antenna presents high impedance

Endfed multibands with tunner
End-feed antenna with 1.5mm wire 36m long and T200-2 toroid - 23 double turns of one mm

Configurazioni antenna end-fed
End Fed Hertz trasformazione d'impedenza e contrappeso


PIC-Keyer

PIC-Keyer This project describes the construction of a real "QRP" keyer with a small microcontroller PIC 16F84, with slightly modified hardware also PIC16F62

RF Inductance Calculator

RF Inductance Calculator Mean diameter of the air core coil, measured from conductor centre to conductor centre include the wire insulation thickness, if any

Voice Recorder

Voice Recorder Gestito dall'integrato in questione ed offre la possibilità di registrare più messaggi per una durata massima di un minuto con buona fedeltà di riproduzione