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2.4Ghz Helix antenna
Antenna especially for frequencies in the range 2 - 5 GHz this design is very easy, practical, and, non critical
post 14 Apr 2024
Helix Antennas Links →
QHA Quadrifilar Helix Antenna
La QHA nasce come antenna per RX dei satelliti polari NOAA, METEOR
Quadrafilar Helix antenna for 436 Mhz
This is an antenna that I just built. I intend on using for receiving the AO-27 downlink at 436.800 +/- doppler. It is built with right hand circular polarization, and the gain is supposed to be in the neighborhood of 3 DB
Quadrifilar helix antenna for 137 Mhz
I had always wanted to try and receive a signal from a satellite using my scanner
Quadrifilar Helix Antennas QHA
The Quadrifilar Helical Antenna, it ideal for a number of uses. Satellite reception and transmission may be number one among them
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La QHA nasce come antenna per RX dei satelliti polari NOAA, METEOR
This is an antenna that I just built. I intend on using for receiving the AO-27 downlink at 436.800 +/- doppler. It is built with right hand circular polarization, and the gain is supposed to be in the neighborhood of 3 DB
I had always wanted to try and receive a signal from a satellite using my scanner
The Quadrifilar Helical Antenna, it ideal for a number of uses. Satellite reception and transmission may be number one among them
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