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QRO ATU with Dummy Load


QRO ATU with Dummy Load

QRO ATU / Dummy Load / Power meter intended to be capable of handling the full 400W

post 23 Oct 2024


Antenna Transmatch tuner Links

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The simple Z mactch tunner simplified
Simple design which has been fine tuned to match a wide range of antenna impedance conditions

Qrp-antenna-tuner kit
antenna tune tuner diy kit 1-30mhz

The MFJ tuner with the motor drive attached
This project uses some small gearmotors purchased from Hobby Engineering to drive the inductor switch and the two air variable capacitors on an MFJ 1500W antenna tuner

The Z-Match Antenna Tuner
Charlie's Z-match ideas below have been implemented in my station as my compact portable antenna tuner

The Dentron AT-3K Antenna Tuner
AT-3K only has a switch position for balance line BAL to feed to an external balun


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