If you need an amplifier ... of the old mini circuits modules that were popular among hams and RF experimenters decades ago. However, these are cheap, simple, and tiny. You only need a handful ...

The integration and miniaturization of amplifiers and oscillators, crucial for modern electronics, are achieved through ...

Tuning into them is a pretty simple proposition, as [DX Explorer]’s receiver demonstrates. His circuit ... The output of the RF amplifier goes directly into an audio amp, which could be anything ...