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Homebrew 1:1 HF Balun, balanced to Un-balanced
Here is the schematic of my Ruthroff Balun, I used 13 windings
post 28 Jan 2024
Toroid & balun Links →
Balun un-un
Il diametro di ogni singolo conduttore rosso o nero e' di 2 mm plastica compresa, e di 0.75 mm senza isolante plastico
Balun
For some so-called baluns, no throttling action or effect against common-mode currents will be measurable. This means that sheath waves occur and the coaxial cable outer screen acts as an antenna. Domestic interference fields penetrate unhindered over the alleged balun in the receiver
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Enter the frequency of operation and the balanced and unbalanced Z0.Values for L and C will be calculated
Popular high power baluns
Transformers, Inductors, Chokes and Coils custom designs, standard stocking parts
Balun 4:1 in aria
Varie fasi della costruzione di un balun in aria 1:4 per alimentare una antenna long wire tipo canna da pesca o simili
210
Il diametro di ogni singolo conduttore rosso o nero e' di 2 mm plastica compresa, e di 0.75 mm senza isolante plastico
For some so-called baluns, no throttling action or effect against common-mode currents will be measurable. This means that sheath waves occur and the coaxial cable outer screen acts as an antenna. Domestic interference fields penetrate unhindered over the alleged balun in the receiver
Enter the frequency of operation and the balanced and unbalanced Z0.Values for L and C will be calculated
Transformers, Inductors, Chokes and Coils custom designs, standard stocking parts
Varie fasi della costruzione di un balun in aria 1:4 per alimentare una antenna long wire tipo canna da pesca o simili
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 My frequency design of 1.825 MHz a 90 degrees line would be 33,70 metersinstead of the previously calculated 33,27 m
Atu balanced feeder antenna system An ATU has the advantage of bringing the feeder-antenna system to resonance, act as a band pass filter both on receive and transmit and a low SWR