G4EML wrote: ↑Wed Mar 11, 2020 9:22 pm
DMR Mic set to 12dB is very high gain. In fact it is the maximum gain. Probably not surprising it is picking up noise.
Normal setting is 0dB.
GM
i am not using an external mic.
ok now parrot testing mic: 0db
both speak audio voice is normal and ok (display light off and on)
Display options: Brightness: 100%
Sound options: DMR mic: 0db
you hear background noise when the screen background light is ON
https://www.qsl.net/oh7fes/parrot_display_on_0db.mp3
Display options: Mode: None
Sound options: DMR mic: 0db
No background noise when the screen background light is OFF
carrier is clean
https://www.qsl.net/oh7fes/parrot_display_off_0db.mp3
My own notices: Screen brightness is the main thing. If it is 100%, digital noise is heard. Noise disappears when I set it to less than 10%.
Noise goes up as the brightness % goes up.
There is no background noise when Mode: None in Display options (no light on the display).
The noise is detectable in the VU meter bar in the top left of the display when I press PTT = TX. The greater the disdplay brightness, the greater the background noise and the higher the VU bar. Of course the VU meter background noise disappears when display options Mode:None.
OH7FES Ari