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Linear loaded short dipole
My linear loaded dipole on both sides by 1.8 m in order to cover the 20 m band. SWR is ok without modification of the 1 : 4 transformation line
post 17 Aug 2024
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Short Top Band 160m Antenna
Antennas such as the one pictured here do indeed work relarively well on 160m, provide you provision for the high voltage and high current involved
Stealth Antenna Farm
Why stealth ? Restrictive neighborhood covenants. 3 stacked 144-432 5 el, 17 element 902 MHZ, 2x22 element 1296
The stealth antenna
These kind of antennas belong to the family of E-probes and are specifically designed to being sensitive only to the electric component of the electromagnetic field
How to build roofspace antennas
There is a solution, as long as you have a roof over your head, you have room for an HF antenna which will enable you to make many good long distance contacts
Restricted space 80 meter antenna
I ran a small single wire from the soffit directly down the side of the building,is 30 ft vertical wire
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Antennas such as the one pictured here do indeed work relarively well on 160m, provide you provision for the high voltage and high current involved
Why stealth ? Restrictive neighborhood covenants. 3 stacked 144-432 5 el, 17 element 902 MHZ, 2x22 element 1296
These kind of antennas belong to the family of E-probes and are specifically designed to being sensitive only to the electric component of the electromagnetic field
There is a solution, as long as you have a roof over your head, you have room for an HF antenna which will enable you to make many good long distance contacts
I ran a small single wire from the soffit directly down the side of the building,is 30 ft vertical wire
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