This circuit uses a resonant reed switch at the trigger frequency. The circuit is from General Electric in a 1966 documentation. This type of component is rare today.
This frequency divider with SUS was found in General Electric's 1967 documentation. Similar...
For measurements between 30 and 40º C this circuit was found in the documentation of 1968. The...
This circuit is suitable for use with 1400 kHz range FI receivers. Changes can be made to other IF...