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End fed halfwave antenna 20/11/10m.monoband
The vertical end fed half wave antenna is my choice for it's easy to employ and it's a perfect DX antenna, a 20m. version is about 10 m. long and has aprox. 3000 Ohms at the feedpoint. So we need a simple tuner to reduce this to 50 Ohm
post 24 Jan 2024
Antenna End Fed Links →
End Fed Halfwave Antenna And Matching Unit
My favorite antenna for portable use is the end fed halfwave or EFHWA. I have documented some of the earlier ones I built in my pedestrian mobile pages
End fed Hertz
Installed the Dual Band L Network at the base of the antenna
End Fed Matcher
A 8:1 Transformer out of a piece of 18 ga. house wire. 24 turns as Secondary and 3 turns as primary on a T240 core
End Fed Antenna non risonante a carico lineare
End Fed da balcone dai 40 metri, ai 20 metri in 6 metri circa di lunghezza
End Fed Half Wave Antenna Coupler SWR bridge
End Fed Half Wave and a small coupler to use with my Rock-Mite. The coupler converts the high impedance end of the End Fed Half Wave antenna down to 50 ohms
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My favorite antenna for portable use is the end fed halfwave or EFHWA. I have documented some of the earlier ones I built in my pedestrian mobile pages
Installed the Dual Band L Network at the base of the antenna
A 8:1 Transformer out of a piece of 18 ga. house wire. 24 turns as Secondary and 3 turns as primary on a T240 core
End Fed da balcone dai 40 metri, ai 20 metri in 6 metri circa di lunghezza
End Fed Half Wave and a small coupler to use with my Rock-Mite. The coupler converts the high impedance end of the End Fed Half Wave antenna down to 50 ohms
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 Mean diameter of the air core coil, measured from conductor centre to conductor centre include the wire insulation thickness, if any
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