This simple field strength meter was found in a 1967 documentation. The transistor is germanium, and the coil depends on the frequency range that must be analyzed. The indicator is 1 mA and powered by only 1 cell.
This simple field strength meter was found in a 1967 documentation. The transistor is germanium, and the coil depends on the frequency range that must be analyzed. The indicator is 1 mA and powered by only 1 cell.