Noise reported on center frequency 134 pt 97 in vicinity of fjs, ca at FL270.

Attributes
ACN	111437
Time
Date	198905
Day	Fri
Local Time Of Day	0601 To 1200
Place
Locale Reference	atc facility : fjs
State Reference	CA
Altitude	msl bound lower : 27000 msl bound upper : 27000
Environment
Flight Conditions	VMC
Light	Daylight
Aircraft 1
Controlling Facilities	artcc : zse
Operator	common carrier : air carrier
Make Model Name	Medium Large Transport
Navigation In Use	Other
Flight Phase	cruise other
Flight Plan	IFR
Person 1
Affiliation	company : air carrier
Function	flight crew : first officer
Qualification	pilot : atp
Experience	flight time last 90 days : 180 flight time total : 7000 flight time type : 2500
ASRS Report	111437
Person 2
Affiliation	company : air carrier
Function	flight crew : captain oversight : pic
Qualification	pilot : atp
Events
Anomaly	other anomaly other
Independent Detector	other flight crewa
Resolutory Action	none taken : anomaly accepted
Consequence	Other
Supplementary
Primary Problem	ATC Human Performance
Air Traffic Incident	other
Situations
ATC Facility	other physical facility

Narrative:

Every time we fly in this area there is excessive radio interference on center frequency 134.97. This problem has been known for a long time and it's very annoying! The interference wears you out by its nature of sound (not voice), its duration at least over 20 minutes, because everyone else starts asking about it. I say we need to assign a new frequency. Callback conversation with reporter revealed the following: I flew that route last week and we did not have the interference. Previous to that we had experienced it every flight. The center controller said they had been trying to get something done about it for 6 years.

Original NASA ASRS Text

Title: NOISE REPORTED ON CENTER FREQ 134 PT 97 IN VICINITY OF FJS, CA AT FL270.

Narrative: EVERY TIME WE FLY IN THIS AREA THERE IS EXCESSIVE RADIO INTERFERENCE ON CENTER FREQ 134.97. THIS PROBLEM HAS BEEN KNOWN FOR A LONG TIME AND IT'S VERY ANNOYING! THE INTERFERENCE WEARS YOU OUT BY ITS NATURE OF SOUND (NOT VOICE), ITS DURATION AT LEAST OVER 20 MINUTES, BECAUSE EVERYONE ELSE STARTS ASKING ABOUT IT. I SAY WE NEED TO ASSIGN A NEW FREQ. CALLBACK CONVERSATION WITH REPORTER REVEALED THE FOLLOWING: I FLEW THAT ROUTE LAST WEEK AND WE DID NOT HAVE THE INTERFERENCE. PREVIOUS TO THAT WE HAD EXPERIENCED IT EVERY FLT. THE CENTER CTLR SAID THEY HAD BEEN TRYING TO GET SOMETHING DONE ABOUT IT FOR 6 YEARS.

Data retrieved from NASA's ASRS site as of August 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.