30 and 40 meter do need the coils placed at the feedpoint, bandwith decreases to about 100 KHz
post 04 Dec 2024
Antenna Vertical Links →
Antenna Verticale
The construction very simple starts with drilling the plate Made of aluminum, marking the holes for the base and for the panel PL
Vertical array Vertical antenna
Antenna verticale per bande basse a reattanza differenziale nelle configurazioni,40/80 -- 30/40/80 -- 40/80/160 -- 30/40/80/160
CB modified antenna for the 12m band
CB modified antenna for the 12m a quarter of a wave
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The construction very simple starts with drilling the plate Made of aluminum, marking the holes for the base and for the panel PL
Antenna verticale per bande basse a reattanza differenziale nelle configurazioni,40/80 -- 30/40/80 -- 40/80/160 -- 30/40/80/160
CB modified antenna for the 12m a quarter of a wave
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