Coaxial balun 1:1

Coaxial balun 1:1

Coaxial balun 1:1

This balun uses a wavelength of 1/4 and the adaptation sections of the wavelength with with the 50 Ohm coaxial cable

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post 05 Sep 2026

Toroid & balun Links →

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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

Microsat

Microsat Ham radio shop for ulari project, aprs, aprs with radio, bluetooth, gps, gsm, ham radio interfaces, weather,accessories, cables to radio

Kits and Components

Amateur radio kits by Kanga US

Enigma Component Shop

Enigma Component Shop Cable & wire,capacitors, connectors, crystals/oscillators, filters, hardware,kits/modules,test & measurement

4 Band CW QRP Transceiver Homebrew 4-bander cw qrp transceiver for the homemaker, the design is based on a classic dc receiver and a class c transmitter

The Folded Dipole The Folded Dipole is not used much amongst Radio amateurs, probably due to the fact that this antenna uses twice as much wire as a single-wire dipole

15 Element Wire Log-Periodic 7MHz 30MHz Balun necessary, Double-boom 60/18mm, electrically fed = increased gain

Antenna Longwire lunghezza casuale Vi occorre un antenna semplice e di sicuro funzionamento, in pochi minuti potrete costruirvi una Long Wire di lunghezza casuale

The Vocal Keyer The vocal keyer for Yaesu FT1000 MarkV

Homebrew T-Match Antenna Tuning Unit Build a new ATU that would cover 160m and also handle much more power

50 MHz preamp Gain 26dB with the BFG135 Preamps for 144 and 430 MHz, for 50 MHz, the BFG135a is a cheap transistor and in my view rather strong. It is not easily damaged by static discharge or RF power. FG connection

Calcolo induttanza bobina in aria Nei dati immessi usare il punto (.) come separatore e non la virgola