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L'antenne Hertz Conrad Windom
The Hertz antenna, known in the USA under the name of Windom, is a multiband wire antenna made up of a horizontal radiating element of lambda / 2 length and fed at one third of its length by a single feeder wire
post 04 Dec 2024
Antenna Multibands Links →
A multi-band inverted-V dipole for portable operation
This form of inverted-V allows multi-band operation with one antennafrom portable locations
A Small Garden Antenna
Spacers made from glass fibre sheet cut into strips was used, each 6 inches long. The parallel antenna wires are secured with wire wraps
All band dipole Mk2
The All Band HF Doublet is often referred to as a random length dipole as it is generally as long as the available space within reason, but here are a couple of limitations to the ultimate dipole length
Improvement of a long wire antenna
Spectacular noise reduction thanks to this balun, which is very simple to make using drawer bottoms
Extended Double Zepp Antenna
Install a 4:1 current balun on the end of the 450 ohm latter line stub
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This form of inverted-V allows multi-band operation with one antennafrom portable locations
Spacers made from glass fibre sheet cut into strips was used, each 6 inches long. The parallel antenna wires are secured with wire wraps
The All Band HF Doublet is often referred to as a random length dipole as it is generally as long as the available space within reason, but here are a couple of limitations to the ultimate dipole length
Spectacular noise reduction thanks to this balun, which is very simple to make using drawer bottoms
Install a 4:1 current balun on the end of the 450 ohm latter line stub
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