Found in an American documentation from 1969, this astounding circuitry makes a relay operate on 3 Hz cycles. The relay is of the high voltage type of the time.
Found in a QST magazine from the 90s, this powerful unit is intended to supply a VHF transceiver for...
What is a dual frequency generator for? There are several possibilities of use for this circuit. The...
August 2017 - Mouser Electronics has already received the XBee® Cellular 3G modules with built-in...