One moment please while we configure for you...

Welcome to RTS. Please specify your country so we can customize your experience.

The Americas
Asia & the Pacific Rim
the Middle East, & Africa
Latin America

Manual Authorization Required

You must be manually authorization to access this file



Noise Cancellation

The 38T cancels noise best when held very close to the mouth, and it discriminates against all sounds more than ½-inch away. A position at one side of the mouth is best to minimize popping, hissing and breathing sounds when speaking.

Microphone Gain Adjustment

The gain is adjustable through an opening in the side of the microphone housing using a small, flat-blade screwdriver. Clockwise rotation of the control increases gain. Adjustment by a qualified avionics technician is recommended, as excessive gain can cause transmitter overload distortion.

FAA TSO Approval

The 38T microphone is certified for aviation use under FAA TSO C58.
Color Black
Cord Length 6 ft (1.8288 m)
Frequency Response 300-3000 Hz
Impedance 50-600 Ω
Microphone Sensitivity -51 dBV/Pa
Microphone Type Close Talking Differential, Electret Element
Weight 9.77 oz (277 g)


Expand Images

38T Full 4.03 MB | November 6, 2014
38T Mic 2.54 MB | November 6, 2014
38T Speaker Close 918 KB | November 6, 2014

Expand Service Policies

Allgemeine Lieferbedingungen 184 KB | November 30, 2016
Asia/Pacific Service Policies 2.62 MB | September 4, 2018

Expand Technical data sheets

38T FAA TSO Approval 56 KB | July 25, 2012
38T Technical Data Sheet 277 KB | December 21, 2010

Expand Warranties

EMEA BT Service Policies 227 KB | June 11, 2018
Hover over image to zoom
Click image for full-size
Optional accessories
may be shown

Telex is part of the Bosch Communications Systems family of brands, offering the world's most complete portfolio of professional audio and communications solutions.

Share this with:
E-mail Email