General Radio Audio Oscillator Model Type 813-A

Manufacturer: General Radio

Model Number: Type 813-A

Serial #:

Equipment Description: Audio Oscillator

Label Write-up:
The 813-A Audio Oscillator consists of a microphone driven tuning fork and an output filter which attenuates the second harmonic by more than 40 decibels. Output impedance: 50, 500 and 5000 ohms. The Type 813 Audio Oscillator is available in two models, 400 cycles and 1000 cycles. This unit is 1000 cycles. Other frequencies between 300 cycles and 1500 cycles can be obtained on special order.

Dates Produced: 1935 - 1939

Original Price: $34

The museum's inventory number: MRT-1193

Located at Museum in: Test Equipment Room