Which is better?please

Does the noise ratio which is better? Is greater or smaller is better
Thank you for your answer
Which is better?
1.jpg
2.jpg

Hi there,

in general, a larger signal to noise ratio is better.

However, looking at your signal levels, the signal level in the top picture is too high at around -39dBm.

The signal levels in the bottom picture are much better. I believe you want to get around -60 or so for your level and try to minimise the noise floor, hence giving a larger SNR.

Regards, Dave.

thanks