This medium wave receiver was featured in the November 1999 issue of Electronics Now magazine. It is powered by just two small batteries.
We found this circuit in an American publication from the 1990s. The triac must be equipped with a heat...
This CW transmitter for the 3,5 MHz band, low power, was published in a march 1961 Radio...
This circuit that has a response from 10 Hz to 700 kHz was found in Philips documentation from 1968. Dual...