This shortened easy-to-build vertical, with no-radials, is made from surplus military
post 04 Dec 2024
Antenna 40 Meter Links →
Quarter-Wave Vertical Antenna Length Calculator
a quarter-wavelength antenna is easy and inexpensive to build and can be an effective antenna with a low angle of radiation
High Performance 40 Meters Vertical
This shortened easy-to-build vertical, with no-radials, is made from surplus military
Multi dipoles Indoor
Solution of multidipole in the attic
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a quarter-wavelength antenna is easy and inexpensive to build and can be an effective antenna with a low angle of radiation
This shortened easy-to-build vertical, with no-radials, is made from surplus military
Solution of multidipole in the attic
PIC-Keyer This project describes the construction of a real "QRP" keyer with a small microcontroller PIC 16F84, with slightly modified hardware also PIC16F62
Qrm Eliminetor The principle is based on the fact that the interfering signal from the main antenna coming from the local interfering signal is phase-shifted by means of an auxiliary antenna so superimposed that eliminate the interference
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