Telex 100TRA Microphone is a noise–cancelling aviation microphone. It consist of a dynamic microphone, amplifier, and push–to–talk switch in a rugged plastic housing. A hanger bracket and mounting hardware are supplied with the microphone. It is approved under the Federal Aviation Agency TSO–C58.
Features
Noise Cancellation
The 100T microphone features excellent noise cancellation for clear communication in noisy environments. Popping, hissing, and breathing sounds are minimized when used properly.
Microphone Gain Adjustment
A microphone gain trimmer is accessible by removing the back cover. Output can be specified by adjusting the trimmer.
FAA TSO Approval
The 100T microphone is approved for aviation use under FAA TSO C58.
Technical Data
Frequency Response
100–500 Hz shaped for best intelligibility
Sensitivity
–48 dB re: 1V ubar at 1 kHz 12 Vdc supply, 150 ohm load
Impedance
Matches 50–600 ohms
Amplifier
Gain adjustable over approximate ±5 dB range 8–0 Vdc supply voltage required Current 15–30 mA at 12–24 Vdc while PTT switch is pressed 1.4 mA when not pressed
Weight
9 oz. (255 g)
Switching
PTT switch activation turns on amplifier and brings PTT to ground
