S-meter for receivers (CB7926E)

The S-meter is a signal strength meter used in communication receivers. This circuit was found in a 303 Circuits from the 90s, European publication.

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Thermostat (CB25467E)
We found this circuit in the June 1992 issue of Radio Electronics magazine. The sensor is a common...
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Baxandall with CA3140 (CB11981E)
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