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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 Dec 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
Ferrite Shop Ferrite-shop on-line shop, cable clamps,toroids, cable cores, technic,ferrite material choice
Amateur radio kits by Kanga US
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