903E Electret handheld microphone by Telex


Electret handheld microphone

The model 903E Electret handheld microphone is designed for use in high-noise environments where speech intelligibility is desired, such as in aircraft cockpits, passenger cabins, control towers, or terminal areas. The electret element virtually eliminates EMI, RFI and magnetic signals channeling the full power of your communications system into crisp, articulate voice transmission with the RTCA frequency response. The microphone is recommended for advanced technology air transports employing electronic flight instrumentation systems (glass cockpits). Its proven electret technology will not decay or deteriorate in any way over extended periods.


Microphone Sensitivity 400 mV ±3 dB for 114 dB re 20 μ pascals
Mounting Blade Mount
FAA TSO Approvals C58a, Category B

Microphone Type Close Talking Differential, Amplified Electret Condenser
Frequency Response 300 Hz – 5 kHz
Connector Type PJ-068 or XLR-4-12C
Warranty 3 years
Retracted ~12 in (30 cm)
Extended ~7.5 ft. (2.3 m)
Weight ~6.35 oz (180 g)


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