Hits
The Original Slim Jim antenna
This is a vertically polarised omnidirectional
post 15 Nov 2024
Antenna jpole Links →
La J - antenna per 144 MHz
L'antenna ha un basso angolo d´irradiazion e il guadagno e' piu' di 3 dB rispetto ad una ground plane
slim Jim and J Pole calculator
Before we start, be prepared to experiment! The calculator will get you close or spot on if you’re lucky, but there are so many variables
Slim-Jim 2m VHF Band Antenna
Slim-Jim is easy to built, no radial 145Mhz antenna. It has almost equal gain of a 5/8 lambda
Super J-Pole Collinear
VHF and UHF but for 220MHz a shortage of antenna
79
L'antenna ha un basso angolo d´irradiazion e il guadagno e' piu' di 3 dB rispetto ad una ground plane
Before we start, be prepared to experiment! The calculator will get you close or spot on if you’re lucky, but there are so many variables
Slim-Jim is easy to built, no radial 145Mhz antenna. It has almost equal gain of a 5/8 lambda
VHF and UHF but for 220MHz a shortage of 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
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