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A QRP Transmatch ATU
The inductor, the tricky thing in matching units with variable inductance. For the body I found an old pill container with a diameter of 4cm. The coil is then wound on this with 60 windings of 1mm enameled copper wire
post 05 Dec 2024
Antenna Transmatch tuner Links →
5 Impedance Matching
The input impedance of an antenna system can be assigned either notionally, or using a Match Meter or measuring bridge
50 watt z match tuner
A tuner that will work 10 thru 80 meters and handle up to 100 watts of RF
A single coil z match
This ATU being balanced can accomodate balanced line, open wire feeder or 300 ohm slotted
75 mt antenna Tuner
A homebrew z-match
i used a t-200-6 core. the type-6 core over the type-2 because it provides a higher q over most of the hf range
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The input impedance of an antenna system can be assigned either notionally, or using a Match Meter or measuring bridge
A tuner that will work 10 thru 80 meters and handle up to 100 watts of RF
This ATU being balanced can accomodate balanced line, open wire feeder or 300 ohm slotted
i used a t-200-6 core. the type-6 core over the type-2 because it provides a higher q over most of the hf range
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