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Baluns on Log Periodic Antennas


Amateur antenna manufacturers also place baluns at the incorrect location in LPDA arrays or instruct users to route the coaxial feed cable incorrectly
post 20 Sep 2020

Baluns on Log Periodic Antennas

Toroid & balun Links

221



1:1 Balun for HF wire, M0UKD
1:1 50 ohm balun for use on HF horizontal wire dipoles. It uses an AM radio ferrite rod, with 3x14 turns of wire. 10-14 turns should be good for 2-30MHz. 18SWG enammeled copper wire

1:1 Coaxial Balun
A balun with impedance transformer is required to avoid minimum reflection losses arising from mismatch of impedance. This includes the 180 phase shifter

1:9 Antenna balun, KH6GRT
I had this feeling the 1:4 balun was not presenting the greatest match to the open feed line. After I built and tried this 1:9 balun the autotune antenna tuner was able to

1:9 Antenna Long Wire con Balun 9:1, I6IBE
Vi occorre un antenna semplice e di sicuro funzionamento, in pochi minuti potrete costruirvi una Long Wire (filo lungo) o corto, fate voi