ancora
Guru
- Joined
- Dec 16, 2007
- Messages
- 4,022
from Professional Mariner. 1. Turn off LED lights. 2. Tune the VHF radio to a quiet channel. 3. Adjust the VHF radio's squelch control until the radio outputs audio noise. 4. Re-adjust the squelch control until the audio noise is quiet. 5. Turn on the LED lights. If the radio now outputs audio noise the LED lights have raised the noise floor. If the noise floor is found to have been raised, then it is likely the VHF radio and the AIS reception are being degraded by the LED lighting.