Hits
Windom antenna with a 4:1 transformer
- The Windom is an Off-center wire multiband Antenna. The old version was fed just by a single-wire connected on 1/3 of antenna's overall length or with an open-line feeder
post 02 Jan 2025
Toroid & balun Links →
1:4 Guanella-Balun Current-Balun
The purpose of this article is to show how a 1:4 Guanella current balun changes an impedance level by a multiplier of four; for example, 50-ohm coax to a 200-ohm antenna
Constructing a 6:1 RF transformer
If it's using used a 50 Ohm coaxial transmission line, the main problem in constructing a 1:1 current balun using bifilar windings is that you have to get the impedance of the transmission line formed by the two parallel wires exactly correct
Balun & Chokes
I chose the LFB095051 ferrite tubes - sleeves with similar characteristics to the Mix31, therefore excellent for 80 and 160
194
The purpose of this article is to show how a 1:4 Guanella current balun changes an impedance level by a multiplier of four; for example, 50-ohm coax to a 200-ohm antenna
If it's using used a 50 Ohm coaxial transmission line, the main problem in constructing a 1:1 current balun using bifilar windings is that you have to get the impedance of the transmission line formed by the two parallel wires exactly correct
I chose the LFB095051 ferrite tubes - sleeves with similar characteristics to the Mix31, therefore excellent for 80 and 160
Microsat Ham radio shop for ulari project, aprs, aprs with radio, bluetooth, gps, gsm, ham radio interfaces, weather,accessories, cables to radio
Amateur radio kits by Kanga US
Enigma Component Shop Cable & wire,capacitors, connectors, crystals/oscillators, filters, hardware,kits/modules,test & measurement