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ZHU controller voiced concern regarding frequency problems associated with 128.15 surmising vscs may be problem area.
| Attributes | |
| ACN | 772905 |
| Time | |
| Date | 200802 |
| Local Time Of Day | 1801 To 2400 |
| Place | |
| Locale Reference | atc facility : zhu.artcc |
| State Reference | TX |
| Environment | |
| Flight Conditions | VMC |
| Light | Night |
| Person 1 | |
| Affiliation | government : faa |
| Function | controller : radar |
| ASRS Report | 772905 |
| Events | |
| Anomaly | other anomaly other |
| Independent Detector | other controllera |
| Resolutory Action | none taken : anomaly accepted |
| Supplementary | |
| Problem Areas | Maintenance Human Performance Navigational Facility FAA |
| Primary Problem | Navigational Facility |
Narrative:
A second aircraft departing valley approach control (vicinity of harlingen; tx) attempted contact with me (ZHU controller). I never heard the aircraft on frequency 128.15. I was made aware of this when the valley approach controller called me to inform me that the aircraft returned to their frequency. I instructed valley to have the aircraft try me again at which time I observed the receive indication lights on the vscs equipment twinkle. I then transmitted for the aircraft to 'try me again.' at this point; the receiver started to work again. I then turned off diversity algorithm. This function appears to be a part of the problem.
Original NASA ASRS Text
Title: ZHU CTLR VOICED CONCERN REGARDING FREQ PROBLEMS ASSOCIATED WITH 128.15 SURMISING VSCS MAY BE PROBLEM AREA.
Narrative: A SECOND ACFT DEPARTING VALLEY APCH CTL (VICINITY OF HARLINGEN; TX) ATTEMPTED CONTACT WITH ME (ZHU CTLR). I NEVER HEARD THE ACFT ON FREQ 128.15. I WAS MADE AWARE OF THIS WHEN THE VALLEY APCH CTLR CALLED ME TO INFORM ME THAT THE ACFT RETURNED TO THEIR FREQ. I INSTRUCTED VALLEY TO HAVE THE ACFT TRY ME AGAIN AT WHICH TIME I OBSERVED THE RECEIVE INDICATION LIGHTS ON THE VSCS EQUIP TWINKLE. I THEN XMITTED FOR THE ACFT TO 'TRY ME AGAIN.' AT THIS POINT; THE RECEIVER STARTED TO WORK AGAIN. I THEN TURNED OFF DIVERSITY ALGORITHM. THIS FUNCTION APPEARS TO BE A PART OF THE PROB.
Data retrieved from NASA's ASRS site as of May 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.