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QRO No Tuner Multiband Dipole
One of the last upgrades to the dipole before experimenting with high-power tuning was to change the 300 ohm window line to 600 ohm ladder line. The higher-Z open-wire lines experience less loss overall, which means that they can operate at higher SWR than the lower-Z lines for a given loss value
post 04 Dec 2024
Antenna Multibands Links →
Antenna multiband 10,20,40mt
Bi-directional radiation perpendicular to the strands of the doublet Impedance from 50 to 75 ohms depending on the angle of the reverse V
Antenna Half Sloper Multiband 1.8, 3.5, 7, 14, 21, 28 MHz
I made about 25,000 QSOs on it mainly in international contests - in 1.8, 3.5, 7, 14, 21, 28 MHz bands. The antenna also works effectively in WARC bands
Antenna multibanda windom
Questa semplice antenna multibanda lavora su tutte le gamme HF, dai 3.5 ai 30 MHz, incluso le bande WARC
Antena Windom pro pasma 160 a 80 metru
Build an antenna for 160 and 80 m no tuner antenna
Antena Dipolo corto sin trampas para 80-40 y 15 Mts
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Bi-directional radiation perpendicular to the strands of the doublet Impedance from 50 to 75 ohms depending on the angle of the reverse V
I made about 25,000 QSOs on it mainly in international contests - in 1.8, 3.5, 7, 14, 21, 28 MHz bands. The antenna also works effectively in WARC bands
Questa semplice antenna multibanda lavora su tutte le gamme HF, dai 3.5 ai 30 MHz, incluso le bande WARC
Build an antenna for 160 and 80 m no tuner antenna
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