Tmb controller alleges run-up communication dead spot adjoining runway 9L.

Attributes
ACN	539825
Time
Date	200203
Day	Fri
Local Time Of Day	1201 To 1800
Place
Locale Reference	airport : tmb.airport
State Reference	FL
Altitude	agl single value : 0
Environment
Flight Conditions	VMC
Light	Daylight
Aircraft 1
Operator	general aviation : personal
Make Model Name	Texan T6 Harvard
Operating Under FAR Part	Part 91
Flight Phase	ground : preflight
Person 1
Affiliation	government : faa
Function	controller : local
Qualification	controller : radar
ASRS Report	539825
Person 2
Affiliation	other
Function	flight crew : single pilot
Events
Anomaly	other anomaly other
Independent Detector	other controllera
Resolutory Action	none taken : anomaly accepted
Consequence	faa : investigated
Supplementary
Problem Areas	ATC Human Performance Navigational Facility
Primary Problem	Navigational Facility
Air Traffic Incident	Intra Facility Coordination Failure
Situations
ATC Facility	communication equipment : tmb.tower procedure or policy : tmb.tower

Narrative:

Aircraft X was unable to raise me on tower frequency due to a dead spot in the run-up area at runway 9L. A ucr was filed some time ago and military repositioned some antennas to no avail. Callback conversation with reporter revealed the following information: maintenance recently moved the transmission antenna from the control tower to another building (not specified) without substantial improvement. He believes that there is no direct line of site between the antenna and the runway 9L approach end. The reporter did not document this event in the facility operations log, but claims these types of events occur daily.

Original NASA ASRS Text

Title: TMB CTLR ALLEGES RUN-UP COM DEAD SPOT ADJOINING RWY 9L.

Narrative: ACFT X WAS UNABLE TO RAISE ME ON TWR FREQ DUE TO A DEAD SPOT IN THE RUN-UP AREA AT RWY 9L. A UCR WAS FILED SOME TIME AGO AND MIL REPOSITIONED SOME ANTENNAS TO NO AVAIL. CALLBACK CONVERSATION WITH RPTR REVEALED THE FOLLOWING INFO: MAINT RECENTLY MOVED THE XMISSION ANTENNA FROM THE CTL TWR TO ANOTHER BUILDING (NOT SPECIFIED) WITHOUT SUBSTANTIAL IMPROVEMENT. HE BELIEVES THAT THERE IS NO DIRECT LINE OF SITE BTWN THE ANTENNA AND THE RWY 9L APCH END. THE RPTR DID NOT DOCUMENT THIS EVENT IN THE FACILITY OPS LOG, BUT CLAIMS THESE TYPES OF EVENTS OCCUR DAILY.

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.