This circuit from Ferranti was released in 1969. It makes use of the company's transistors that admit current equivalents. The input voltage is 30 mV for total deflection. The band pass is 800 kHz.
In the figure we have another application for the LT3518 integrated circuit from Linear Technology...
This 5.1 MHz circuit was found in a 1980s documentation. The frequency is given by the crystal and...
The three-input audio mixer or mixer shown in the figure was suggested by the Linear Applications Handbook...