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Couplage automatique ICOM AH-4
It consists of an electronic board managed by a microprocessor incorporating no less than 22 relays switchin
post 05 Oct 2024
Antenna Transmatch tuner Links →
Antenna tuning
The antenna coupler matches the impedance of a 15-, 25-, 28-, or 35-foot whip antenna to a 50-ohm transmission line, at any frequency in the 2-to 30-MHz range
Antenna Tuning Unit
An aerial tuning unit (A.T.U.) is a useful accessory for any radio listener as it matches the antennas resonant length to the received frequency, increasing gain and reducing spurious signals
ATl Qrt Antenna Tunner
ATL is a simple QRP antenna tuner for matching the unbalanced antennas to standard 50ohm line
Auto Antenna Tuner
I thought this maybe of some help to builders, I have added 12v LEDs the type with built in resistors to the back of the relays, this makes it much easier to check all is working and to see the solution used
Automatic Antenna Tuner Controller for 600 MeterThis article describes a fully automatic antenna tuning system for remote adjustment of a variable element in an antenna matching system
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The antenna coupler matches the impedance of a 15-, 25-, 28-, or 35-foot whip antenna to a 50-ohm transmission line, at any frequency in the 2-to 30-MHz range
An aerial tuning unit (A.T.U.) is a useful accessory for any radio listener as it matches the antennas resonant length to the received frequency, increasing gain and reducing spurious signals
ATL is a simple QRP antenna tuner for matching the unbalanced antennas to standard 50ohm line
I thought this maybe of some help to builders, I have added 12v LEDs the type with built in resistors to the back of the relays, this makes it much easier to check all is working and to see the solution used
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