Hits
Balun 9:1 UnUn Project
known as a Magnetic Longwire Balun, it is an impedance transformer whose purpose is to feed a high impedance long wire from a 50ohm unbalanced coaxial input. With a 9:1 turns ratio, this gives 450ohm output impedance for the long wire
post 14 Mar 2024
Toroid & balun Links →
Come e' fatto e come funziona un balun
La piu' semplice delle soluzioni e' rappresentata dal semplice dispositivo a trasformatore
Doublet, Zepp
Twin-lead has been connected to an LDG Electronics 4: 1 Balun. The Balun immediately plug-in to the BNC connector on the back of my K1 transceever via some PL-259 / SO-239 / BNC connector adapters
Here is a 12 m long antenna with a 1:9 balun
I used an old plastic box handy for this test Balun.On the red plug is attached the plug SO239 using rivets
Long Wire Balun
I needed about 60 cm wire 1 mm to be able to have 11 turns around the iron powder core
202
La piu' semplice delle soluzioni e' rappresentata dal semplice dispositivo a trasformatore
Twin-lead has been connected to an LDG Electronics 4: 1 Balun. The Balun immediately plug-in to the BNC connector on the back of my K1 transceever via some PL-259 / SO-239 / BNC connector adapters
I used an old plastic box handy for this test Balun.On the red plug is attached the plug SO239 using rivets
I needed about 60 cm wire 1 mm to be able to have 11 turns around the iron powder core
Antenna splitter per VHF-UHF per quattro ricevitori Chi dispone di una sola antenna e vuole collegarvi più di un ricevitore necessità di uno splitter
Amateur radio kits by Kanga US
50MHz to 28MHz RX Converter The concept of the rx converter is quite simple and nothing really new. the local oscillator is a standard colpitts crystal oscillator producing the 22mhz lo signal