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Hearing back ground noise regardless of frequency is caused by system not being properly grounded. Do you have a regular LAND LINE (Plain Old Telephone ei. AT&T) or VOIP (Voice Over I.P) meaning your phone is connected in back of your Internet Modem?
Sorry, there was a problem. Please try again later.I have a radio right beside mine in my room and I haven't experienced any feedback. As it relates to the ability to change frequencies, I'm not certain. Maybe you can google it to see if that's an option.
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