Low Cost Antenna Traps

Let's work through the design of a simple-to-construct low-cost antenna trap
post 09 Mar 2024
Low Cost Antenna Traps

Coils Traps Antennas Links


Cool It
I have owned an AT-AUTO since they were first released and its given good service. One area that it let me down was 10M

Current Through a 75m Bugcatcher Loading Coil
Many experiments and measurements have been made on loading coils using net standing wave current

Costruire tappole per hf
Con questo articolo vorrei descrivere la sequenza delle operazioni che solitamente svolgo quando costruisco le trappole per le bande HF

Come misurare le trappole con l'analizzatore d'antenna
Studiare un sistema accoppiato d'antenne mi sono imbattuto nell'arcinoto modo di tagliare un coassiale esattamente lambda/4

Coil Inductance Calculator
This calculator computes the inductance of a wire coil


Linear loaded short dipole 21Mhz For my amateur radio activities on the HF bands I only have a 3.6 m wide balcony available for antennas. After some study I decided to experiment with a shortened dipole for the 15 m band

Rx antennas 4Square Rx Vertical Array

Rx antennas 4Square Rx Vertical Array My frequency design of 1.825 MHz a 90 degrees line would be 33,70 metersinstead of the previously calculated 33,27 m

A simple SWR Meter is to be used at HF

A simple SWR Meter is to be used at HF An SWR meter provides information about how well matched is your antenna with the transmitter and how well power is being radiated