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Small Magnetic Loop Antenna Theory
This style of antenna is often used for direction finding and has a sharp "reception null" when turned broadside to the incoming magnetic fiel
post 05 Dec 2024
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Magnetic Loop Experiments
A 145MHz 2m loop. Using the software at the bottom of this page, I worked out that a 36cm length of wire, will need a capacitance of around 3.6pf, and around a 50% efficiency
Magnetic loop for 160M
Tuning capacitor and section of 160m-loop 7/8" Cellflex-Cable, 2.8m diameter
Magnetic loop with capacitive load for 30-10M
Equilateral Triangle Loop, Aluminium Profile 8 x 1mm, 1m side length
Portable Magnet Antenne von
An old radio-controlled rotary capacitor approx. 2x350 pF, a rotary capacitor approx. 50 pF for the 10-15 meter band, voltage-resistant ceramic capacitors 500pF to 3500pF
150
A 145MHz 2m loop. Using the software at the bottom of this page, I worked out that a 36cm length of wire, will need a capacitance of around 3.6pf, and around a 50% efficiency
Tuning capacitor and section of 160m-loop 7/8" Cellflex-Cable, 2.8m diameter
Equilateral Triangle Loop, Aluminium Profile 8 x 1mm, 1m side length
An old radio-controlled rotary capacitor approx. 2x350 pF, a rotary capacitor approx. 50 pF for the 10-15 meter band, voltage-resistant ceramic capacitors 500pF to 3500pF
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