This circuit was found in a Popular Electronics of the 1980s. The microammeter may be the lowest current range of a multimeter. The antenna is telescopic.
This converter converts signals from the 50 MHz band to the AM band, making it possible to receive...
This excellent wireless microphone circuit for the varicap-modulated FM band came out in...
We found this circuit in an old American documentation from years 80. The diode determines the frequency...