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Delta Loop 1:4 Balun
A 1: 4 balun for a delta loop antenna on 7 mhz, wire length 40,78m all sides 13,59m one side
post 28 Jan 2024
Toroid & balun Links →
Symetriseurs, adaptateurs d'impedance BALUNS
Incidentally remove the RF in the schack, distorted antenna radiation patterns, reception of ambient electrical noise
Triple ratio balun
The first TRB I built is shown in the photos below. I wound it with four quadrifilar turns and 8 bifilar turns
Tipos de balun y unun
In this blog different types of balun and unun are presented for use in amateur radio frequencies. The emphasis is on the HF band 3-30 MHz
Baluns 1.8 a 30 50 MHz
Building a Balun is a relatively simple job. The transformer uses two ferrite tubes, material 43 or 61, or other material with permeability 125 to 850
210
Incidentally remove the RF in the schack, distorted antenna radiation patterns, reception of ambient electrical noise
The first TRB I built is shown in the photos below. I wound it with four quadrifilar turns and 8 bifilar turns
In this blog different types of balun and unun are presented for use in amateur radio frequencies. The emphasis is on the HF band 3-30 MHz
Building a Balun is a relatively simple job. The transformer uses two ferrite tubes, material 43 or 61, or other material with permeability 125 to 850
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