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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
post 05 Dec 2024
Antenna Transmatch tuner Links →
HF-6M Antenna Tuner Preselector
Frequency range: 2Mc...52Mc 180m band depending on the mismatch of the antenna used and-or maximum inductance. Experimenting with the coils can be desirable
HF Automatic tuner
The atu is composed essentially of relays commanding inductors and capacitors
I built a ZM-2 QRP Antenna tuner
The Emtech ZM-2 Antenna Tuner is a nifty little portable transmatch for QRP
Informationen zum Z-Match Koppler_Selbstbau
The Z-Match coupler is a popular balanced self-assembly coupler. The circuit diagram for the individual components looks like this
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Frequency range: 2Mc...52Mc 180m band depending on the mismatch of the antenna used and-or maximum inductance. Experimenting with the coils can be desirable
The atu is composed essentially of relays commanding inductors and capacitors
The Emtech ZM-2 Antenna Tuner is a nifty little portable transmatch for QRP
The Z-Match coupler is a popular balanced self-assembly coupler. The circuit diagram for the individual components looks like this
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