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End-Fed Half-Wave Tuner for QRP
The two transformers that need to be wound, one on toroid and the other on a binocular core, were pretty easy, and anyone who has wound inductors before will have no problem
post 14 Feb 2024
Antenna Transmatch tuner Links →
Semplice accordatore per swl
Il segnale reso disponibile alla presa sulla bobina L1, a causa del numero variabile che delle spire al momento ci sono, col variabile C1 costituisce un semplice circuito accordato L/C
SGC Smartuner with balanced dipole antenna
The SGC-230 'Smartuner' is an automatically tuned/L-network. 1.6 MHz - 30 MHz SGC-230 is nominally rated for 200 W PEP and is therefore ideal for use with typical 100 W HF transceivers
Super Tee Antenna Tuner
Leature of this tuner is that the low side of the tuner is raised above ground, allowing the tuner to be used with a balanced line
Switchted indutor L match tunner
Sixth inductor of 16 uH and another switch could be added for a total of 31.5 uH which would allow operation on 160 meters too if needed
The NorCal BLT Tuner
The circuit also is an absorptive bridge, which means that your transmitter sees a 50 ohm load as you are tuning up
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Il segnale reso disponibile alla presa sulla bobina L1, a causa del numero variabile che delle spire al momento ci sono, col variabile C1 costituisce un semplice circuito accordato L/C
The SGC-230 'Smartuner' is an automatically tuned/L-network. 1.6 MHz - 30 MHz SGC-230 is nominally rated for 200 W PEP and is therefore ideal for use with typical 100 W HF transceivers
Leature of this tuner is that the low side of the tuner is raised above ground, allowing the tuner to be used with a balanced line
Sixth inductor of 16 uH and another switch could be added for a total of 31.5 uH which would allow operation on 160 meters too if needed
The circuit also is an absorptive bridge, which means that your transmitter sees a 50 ohm load as you are tuning up
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