This receiver was found in a 1924 book by Gernsback. The circuit uses three tubes and is powered by 3 batteries of different voltages, common at the time.
The signals from weak TV, FM and VHF stations can be amplified to assist their reception in...
The oscillator shown in the figure can generate signals between approximately 3 and 15 MHz,...
This circuit was found in the May 1983 issue of Radio Electronics magazine. The SSM7046 integrated...