Narrative:

Air carrier X checked in with ZTL on frequency 128.0, advised controller of loud 'buzz' on frequency which could mask his xmissions. Asked for handoff frequency in case we lost him. Soon thereafter, advised controller 'buzzing' was intolerable as it was constant and loud. He advised he monitor handoff frequency (133.1). I queried controller about problem since I am a former FAA communications engineer for ATC communications. He advised they have tried everything possible to solve this problem, including filing NASA reports and FAA ucr's. No satisfactory action has been taken by southern regional office. It is unknown from this brief encounter if buzzing sound is in equipment/telephone company lines or frequency interference from an unknown source. Flight check can help determine this along with FCC personnel.

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Original NASA ASRS Text

Title: ATC EQUIP PROB COM XMITTER BACKGND NOISE. FREQ 128 PT 0 ZTL MACON HI SECTOR.

Narrative: ACR X CHKED IN WITH ZTL ON FREQ 128.0, ADVISED CTLR OF LOUD 'BUZZ' ON FREQ WHICH COULD MASK HIS XMISSIONS. ASKED FOR HDOF FREQ IN CASE WE LOST HIM. SOON THEREAFTER, ADVISED CTLR 'BUZZING' WAS INTOLERABLE AS IT WAS CONSTANT AND LOUD. HE ADVISED HE MONITOR HDOF FREQ (133.1). I QUERIED CTLR ABOUT PROB SINCE I AM A FORMER FAA COMS ENGINEER FOR ATC COMS. HE ADVISED THEY HAVE TRIED EVERYTHING POSSIBLE TO SOLVE THIS PROB, INCLUDING FILING NASA RPTS AND FAA UCR'S. NO SATISFACTORY ACTION HAS BEEN TAKEN BY SOUTHERN REGIONAL OFFICE. IT IS UNKNOWN FROM THIS BRIEF ENCOUNTER IF BUZZING SOUND IS IN EQUIP/TELCO LINES OR FREQ INTERFERENCE FROM AN UNKNOWN SOURCE. FLT CHK CAN HELP DETERMINE THIS ALONG WITH FCC PERSONNEL.

Data retrieved from NASA's ASRS site as of July 2007 and automatically converted to unabbreviated mixed upper/lowercase text. This report is for informational purposes with no guarantee of accuracy. See NASA's ASRS site for official report.