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A warc 3 band dipole
is a three band sloping dipole. It is basically three dipole antennas fed with one common coax cable and designed to operate on 12, 17, and 30 meters
post 21 Jun 2024
Antenna 24 mhz 12 meters Links →
Moxon Rectangles for 17-20 Meter
Add a matching network to match that to 50 ohms, add some relays to switch between 17m and 20m
Multiband Cubical Quads 10-12-15-17-20 meters
It covers six bands, 20m-10m on HF, and also 6m
J Pole Antenna 17, 15, 12, - 10 m.
A J Pole antenna and the lengths, spacings, and other details to build one for the 17, 15, 12, or 10 meter bands
17
Add a matching network to match that to 50 ohms, add some relays to switch between 17m and 20m
It covers six bands, 20m-10m on HF, and also 6m
A J Pole antenna and the lengths, spacings, and other details to build one for the 17, 15, 12, or 10 meter bands
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