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Antenna tuner monobande 28/30 MHz
10 MHz single band, this box operates in autotransfo. Very simple to make and use since there is only one CV either. The permissible power is greater than 200 watts
post 05 Dec 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
PIC-Keyer This project describes the construction of a real "QRP" keyer with a small microcontroller PIC 16F84, with slightly modified hardware also PIC16F62
RF Inductance Calculator Mean diameter of the air core coil, measured from conductor centre to conductor centre include the wire insulation thickness, if any
Voice Recorder Gestito dall'integrato in questione ed offre la possibilità di registrare più messaggi per una durata massima di un minuto con buona fedeltà di riproduzione