A very simple receiver

With this very simple receiver, many radio amateur stations can be heard with a wire antenna of 5 meters. The receiver is tested on 80, 40, 30 and 20 meters
post 30 Mar 2024
A very simple receiver

Antennas Receiving Links


Installing and Running Spectrum Lab as a VLF Receiver
A PC 16 bit sound card microphone input detects small voltages at frequencies between a few Hz and 20 kHz. Essentially an antenna plugged into the microphone socket makes the sound card into a Very Low Frequency radio receiver

Low band receive antennas
This experiment was quite a bit of fun on a rainy Sunday. Very educational, especially thinking about the transformer feed and how I might use it in a transmitting version

Noise suppression with X-phase II
This device, similar devices are known as QRM eliminators or noise killers, makes it possible

Shielded Loop antenna
A single-turn small loop antenna comprised of a hollow conductor arranged in a closed shape

Preselettore di antenna per onde lunghe 100-500 KHZ
Il pregio di questo preselettore seriale e' quello di avere una elevata selettivita', di conseguenza lo rende adatto vista la gamma di frequenza usata)alla ricezione del CW e dei radiofari NDB

The K9AY loop antenna for 160 and 80m bands

The K9AY loop antenna for 160 and 80m bands You don't have the space to put up a 4 beverage antenna's, an ewe or a 4-square and want 'good ears' on 160 and 80m? no problems try a k9ay loop antenna

Satellite Antenna Rotator Controller and TRACker

Satellite Antenna Rotator Controller and TRACker ARCTRAC is a portable integrated satellite tracking system

Duplexer 2m-70cm

Duplexer 2m-70cm- Usare un'antenna bibanda 2/70 con due radio separate V/UHF, usare due antenne separate V/UHF con una singola radio bibanda