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K9AY Loops


Low band operators are always looking for ways to improve their hearing. As a low-band fan, I was impressed with the EWE antenna developed by Floyd Koontz, WA2WVL. [1, 2] Koontz shows us how to build a compact
post 23 Apr 2024
K9AY Loops

Antenna Delta Loop Links

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Delta Loop UN7CI for 7, 10, 14 and 21- MHz
The antenna has SWR less the 2.0:1.0 at height of the lower side 1.2 meters above the ground

Costruiamo una delta-loop
La delta loop e' un'antenna semplicissima e molto economica, costituita da un triangolo di filo chiuso lungo un'onda intera moltiplicato per il coefficiente di velocita' della RF nel filo di rame

An Easy to Install Vertical Loop for 80-6 Meters
My portable loop is 150 feet long 50 ft per side and includes a 4:1 balun


Linear-loaded-short-dipole-21mhz

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