Based on the BA1404 integrated circuit, this circuit was found in the July 1992 issue of Radio Electronics magazine. The circuit is short range, but a power amplifier stage can be used.
This circuit can be used to generate signals from 300 kHz to 10 MHz, depending on the crystal...
This circuit appeared in Amateur Radio Today in an issue and was found in a 1995 issue. The...
We found this configuration in a 1974 technical documentation. It can test both TTL logic circuits and...