We found this circuit in the April 1992 issue of Radio Electronics magazine. The circuit uses an operating system that requires a symmetrical power supply.
This 1992 circuit operates in the range of cordless phones used at the time. The circuit is based...
This different circuit uses a relay as an oscillator, whose frequency is determined by C1, and to...
This antenna or booster amplifier operates with signals from the midband (MW) range up to the VHF...