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Multiband Semi-Helical Inverted L Vertical


Multiband Semi-Helical Inverted L Vertical

This is my attempt to build an antenna for 80 and 40 meters that will accommodate my installation limitations

post 04 Dec 2024


Antenna Vertical Links

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Antenna verticale multibanda con semidipoli
This type of antenna, because of the length limitation of the support, can satisfy the need of three bands: 14, 21 and 28 MHz a fourth conductor could find a place on the support in the future

Vertical 75/80 mt
Una verticale ad un quarto d'onda accorciata,di estrerma facilita'

Dual band wire vertical
You can make this antenna with as many vertical radiators as you have room for, and use a variety of insulating materials


PIC-Keyer

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

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

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