Narrative:

The ground radios on our tow tractors become impossible to hear when the tractor is revving its engine to tow an airplane. The speakers are at maximum volume; but positive communications with the control tower is not possible.

Google
 

Original NASA ASRS Text

Title: A Line Mechanic reports the ground radios on their tow tractors become impossible to hear when the tractor is revving it's engine to tow an airplane. Positive communications with Control Tower is not possible; even with the tug radios at maximum volume.

Narrative: The ground radios on our tow tractors become impossible to hear when the tractor is revving its engine to tow an airplane. The speakers are at maximum volume; but positive communications with the Control Tower is not possible.

Data retrieved from NASA's ASRS site as of April 2012 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.