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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
End-Fed Half-Wave Tuner for QRP

Antenna Transmatch tuner Links

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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


Noise suppression with X-phase II

Noise suppression with X-phase II This device similar devices are known as QRM eliminators or noise killers, makes it possible

The K9AY loop antenna for 160 and 80m bands

The K9AY loop antenna for 160 and 80m bands You don't have the space to put up a 4 beverage antenna's, an ewe or a 4-square and want 'good ears' on 160 and 80m? no problems try a k9ay loop antenna

Microphone boom headset for the FT-897

Microphone boom headset for the FT-897 Boom length m. 5.24-fiberglass spreaders m. 2.95-loops dimensions m. 2.00 x 4.27 with 5.00 m