We find this circuit in American documentation from the 1980s. It consists of a frequency folder using a varicap. The capacitors and coils depend on the frequency of operation.
Circuits and devices can be tested using the tester. The visual indication of the state of the...
This circuit is intended for the use as modulated light signals from digital sources. The circuit...
This circuit was found in a 1992 documentation and has excellent sensitivity, using components that...