GT-1 Gear Tooth Speed Sensor and 1K resistor

The GT1 sensor is typically used in applications where RPM can be obtained from gear teeth sensing. It can also be used to measure rotor speed RPM at the pre-rotation gear of an Autogyro aircraft. The GT1 is primarily used with the RV-1 and RV-2 units but can also be used with all Stratomaster instruments for RPM measurement.