The FD4 FD3 windom antenna

The 4-band Fritzel model FD4 is a special version of a Windom antenna. It is a half-wave long on the lowest frequency
post 08 Jun 2024
The FD4 FD3 windom antenna

Antenna Multibands Links


15 Element Wire Log-Periodic 7 MHz - 30MHz TITANEX DLPD-15
Feeding with just a single coax cable for all seven bands 50 hm Loss-free linear loading feeding on 10MHz, full-size rotary dipole on 7MHz

40-10 Meter Antennas
All three dipoles were fed from a single 1:1 balun

6 band windom anten 80-40-20-17-12-10m, TA1CD
Our antenna will serve us for a long time if we isolate these parts from the external environment with hot silicone or similar materials after soldering the connections in honey. We can use our antenna in all hf bands except 160m, 30m and 15m

A dipole portable
Configured as a dipole, the ATX whips appeared not to be long enough.A loaded dipole is more efficient if the loading coil is closer to the top of the antenna

T2FD antenna Tilted Terminated Folded Dipole
FD4 G5RV and Automatic Antenna Tuners


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