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6:1 Voltage Balun
Requiring a balun to feed a balanced antenna from an un-balanced load with a impedance step up from 50ohms to 300ohms, a 1:6
post 08 Feb 2024
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
9:1 Impedance Transformer
a 9:1 unbalanced to unbalanced UNUN impedance transformer, is to experiment with an Inverted V end fed antenna for 80 to 17m, I'm not aiming for transmission on 12 and 10m
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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
a 9:1 unbalanced to unbalanced UNUN impedance transformer, is to experiment with an Inverted V end fed antenna for 80 to 17m, I'm not aiming for transmission on 12 and 10m
Noise suppression with X-phase II This device similar devices are known as QRM eliminators or noise killers, makes it possible
The K9AY loop antenna for 160 and 80m bands You don't have the space to put up a 4 beverage antenna's, an ewe or a 4-square and want 'good ears' on 160 and 80m? no problems try a k9ay loop antenna
Spiderbeam 10-15-20m E' una Yagi tribanda full-size leggera, fatta di tubi in vetroresina e filo