This transmitter for the 2-meter range with a power of 1.5 W was found in a magazine 73 for radio amateurs. No information was provided about the coils.
Found in American documentation from the 90s, this circuit can measure frequencies on a linear...
This circuit was found in a 1980s US publication. It indicates when the phone is off-hook by...
This circuit was found in a Philips documentation from 1966. The circuit provides 1 mW with a...