ZHU controller voiced concern regarding on going problem with frequency 128.15.

Attributes
ACN	764192
Time
Date	200712
Local Time Of Day	1201 To 1800
Place
Locale Reference	atc facility : zhu.artcc
State Reference	TX
Environment
Flight Conditions	VMC
Light	Daylight
Aircraft 1
Controlling Facilities	artcc : zhu.artcc tower : pit.tower
Operator	common carrier : air carrier
Make Model Name	B737 Undifferentiated or Other Model
Operating Under FAR Part	Part 121
Flight Phase	cruise : level
Flight Plan	IFR
Person 1
Affiliation	government : faa
Function	controller : radar
Qualification	controller : radar
Experience	controller time certified in position1 : 3
ASRS Report	764192
Events
Anomaly	other anomaly other
Independent Detector	other controllera
Resolutory Action	none taken : anomaly accepted
Supplementary
Problem Areas	FAA Maintenance Human Performance
Primary Problem	FAA
Situations
ATC Facility	communication equipment : zhu.artcc

Narrative:

Air carrier attempted to check onto my frequency (128.15 at sector 58) numerous times before returning to the previous controller's frequency. That controller then alerted me to the situation. When the pilot tried again; I only knew he was calling me by observing the frequency receive indicator lights on the vscs equipment 'twinkle.' I then transmitted to the pilot asking him to '...say again?' this seemed to clear the problem partially. When the pilot again transmitted to me; my reception of his transmission kept cutting out. I was only able to clear the situation by disabling the diversity algorithm function for this frequency. This frequency has been having receive problems for several months now.

Original NASA ASRS Text

Title: ZHU CTLR VOICED CONCERN REGARDING ON GOING PROBLEM WITH FREQ 128.15.

Narrative: ACR ATTEMPTED TO CHK ONTO MY FREQ (128.15 AT SECTOR 58) NUMEROUS TIMES BEFORE RETURNING TO THE PREVIOUS CTLR'S FREQ. THAT CTLR THEN ALERTED ME TO THE SIT. WHEN THE PLT TRIED AGAIN; I ONLY KNEW HE WAS CALLING ME BY OBSERVING THE FREQ RECEIVE INDICATOR LIGHTS ON THE VSCS EQUIP 'TWINKLE.' I THEN XMITTED TO THE PLT ASKING HIM TO '...SAY AGAIN?' THIS SEEMED TO CLR THE PROB PARTIALLY. WHEN THE PLT AGAIN XMITTED TO ME; MY RECEPTION OF HIS XMISSION KEPT CUTTING OUT. I WAS ONLY ABLE TO CLR THE SIT BY DISABLING THE DIVERSITY ALGORITHM FUNCTION FOR THIS FREQ. THIS FREQ HAS BEEN HAVING RECEIVE PROBS FOR SEVERAL MONTHS NOW.

Data retrieved from NASA's ASRS site as of January 2009 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.