Extremely Short Transmitting Antennas

There may be some environments where the dreaded antenna policy is so strict that you not dare put any short-wave antenna of usual dimensions outside
post 23 Apr 2024
Extremely Short Transmitting Antennas

Antenna Isotron Links


Tuning an Isotron 20Mtr antenna
I have this Isotron purchased some time ago to use on 20 meter psk31 but never got around to it. In fact, the first time I played around with it the tuning did not make sense

Isotron Antennas Low Profile Limited and Restricted Space Antennas for HF
Solve Virtually Any Restricted Space Problem - 40 Meter Isotron only 22 inches x 16 inches x 15 inches!

PCS-Electronics Home Brew ISOTRON

Isotron 21 MHz antenna
Isotron 21 MHz antenna design enhancements


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