Radio White Noise

[Berchmans]

I have interesting issue with white noise on my radio. During most phases of flight there is no issue but when I take off and reach about 100 feet in altitude I get white noise on the radio. It does not carry over when transmitting and goes away when ever the radio is receiving but returns when the transmission stops. Once I get about 5 miles from the city the noise goes away. I have asked the tower if anyone else has noticed this problem and they have no reports. I have flown my other airplane and do not get the same noise. The radio involved is an ICOM 210. suggestions?

[Mel]

Sounds like you need to adjust the squelch.

Any powerful radio/tv transmitting towers close by? Sometimes these hi power transmission towers will break the squelch.

[Berchmans]

You were right. I had not adjusted squelch since installation of the radio. There are a lot of high power radio stations in the area. Problem solved. Thanks again.