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A Simple Clamp-On Current Transformer


After the core was cut I wrapped a layer of electrical tape around the core as shown in figure 3. The next step was to cut a strip of copper
post 16 Dec 2021



Toroid & balun Links

213



Balun a larga banda da 160 metri a 6 metri
Un oggetto che non deve mancare nel nostro shack e soprattutto collegato alle antenne, deve essere il bal-un. Un bal-un serve a fare in modo che la corrente scorra in maniera perfettamente simmetrica in una antenna bilanciata e non torni sul coassiale di alimentazione

Balun 4:1
Autocostruzione, pratica di un balun 4:1 a toroide

Balun 9:1 long wire
To complete my season, I needed an antenna for bands over 40 meters, that is 40, 80, and 160 meters, but the useful space is a little tight, consulting several articles on the subject, I decided to build a balum of 9: 1 and stretch a wire LongWire in the space available

Balun A switchable 1:1 - 4:1 balun
I have been experimenting with an off center fed dipole for for field operation, and the antenna called for a 4:1 balun on most bands, and a 1:1 balun on 15 meters

Balun en courantby
When a coax feeds a symmetrical antenna, currents flow along the braid of the coax. This can cause TVI and distort the antenna radiation pattern.

10 m| 12 m| 15 m|
17 m 20 m| 2 m|
23 cm| 30 m| 40 m
6 m| 70 cm| 80 m| 160 m| 136 khz
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