I am working in an aircraft industry on vhf radio for aircrafts. I want to make sensitivity check of my recievers. The specifications of the transceiver says -97 dBm for SINAD not less than 10 dB. Kindly give me help to understand this.
Transmitted power from your receiver which may include LNA / PA / etc = -97 dBm = 127W Approx
SINAD is same as Signal to Noise Ratio - >10dB
Generally, the sensitivity of any device is the minimum i/p signal (power in W or dBm) required to drive your receiver keeping the SNR and input power on mind. There should be few formulas which i cannot recollect. Maybe you can check on google or anyone else could be of better help.
You would like to measure the sensitivity of the radio ???
Connect a signal generator to input, adjust a FM modulation within specification say 1kHz of modulation frequency,5kHz FM deviation or more.(NBFM)
Check the SINAD at the audio output by decreasing RF output level of the generator and when you see SINAD=10-12dB, stop it and read the RF input level.
Consider cable losses and connecor losses and make them calibrated well.