GMDSS Maintainer: Element 9

1. A SINAD is the product of the signal and noise divided by the sum of the noise and distortion.
2. B SINAD is the sum of the signal, noise and distortion divided by the sum of the noise and distortion.
3. C SINAD is the sum of the noise and distortion divided by the sum of the signal, noise and distortion.
4. D SINAD is the product of the noise and distortion divided by the sum of the signal and noise.

Tip: press A-D to answer