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Couplage automatique ICOM AH-4


Couplage automatique ICOM AH-4

It consists of an electronic board managed by a microprocessor incorporating no less than 22 relays switchin

post 05 Dec 2024


Antenna Transmatch tuner Links

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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



Antenna splitter per VHF-UHF per quattro ricevitori

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

Kits and Components

Amateur radio kits by Kanga US

50MHz to 28MHz RX Converter

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