38T
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.
Specifications
| Microphone Sensitivity | -45 - -51 dB (re: 1 V / μbar @ 1 kHz, 12 VDC) |
| FAA TSO Approvals | C-58 |
| Warranty | 3 years |
Specifications |
|
| Retracted | ~11.5 in (292 mm) |
| Extended | ~6 ft. (1.8 m) |
| Weight | ~8 oz (227 g) |
| Microphone Type | Close Talking Differential, Electret Element |
| Mounting | External Diameter Mount |
| Frequency Response | 300 Hz – 3 kHz |
| Connector Type | PJ-068 or XLR-4-12C |
Downloads
| Name | Size | Date |
|---|---|---|
| 38T EC Declaration of Conformity | 101KB | Nov 6, 2014 |
| 38T FAA TSO Approval | 56KB | Nov 6, 2014 |
| Name | Language | Size | Date |
|---|---|---|---|
| 38T Technical Data Sheet | EN | 277KB | Nov 6, 2014 |
38T Mic
38T Full
38T Speaker Close
| Name | Language | Size | Date |
|---|---|---|---|
| Maintenance & Overhaul Manual Publication Index | EN | 22KB | Apr 4, 2019 |
| Name | Size | Date |
|---|---|---|
| Headset Cleaning Memo | 84KB | Jun 12, 2020 |