TB 43-0123
MD-1101/A
EIC: N/A
(Illustration Not Available)
MD-1101/A Audio Threshold System
1. Brief Description:
The MD-1101IA Audio
3. Applicable Publications:
Threshold System is installed in the AH-IS and OH-58( )
TM 11-1520-228-20 (Pertains to OH-58 aircraft
aircraft respectively and is designed to provide adequate
TM 11-1520-228-20-1 (Pertains to OH-58 aircraft)
cross-talk isolation during KY-58 secure voice operation
TM 11-1520-228-20P (Pertains to OH-58 aircraft)
to prevent inadvertent transmission of audio from
TM 11-1520-228-34 (Pertains to OH-58 aircraft)
another radio facility. It will accommodate up to three
TM 11-1520-228-34-1 (Pertains to OH-58 aircraft)
interphone stations.
TM 11-1520-236-23 (Pertains to AH-1 aircraft)
TM 11-1520-236-20P (Pertains to AH-1 aircraft)
2. Applicable Tools and Test Equipment:
See Appendix B for nomenclature, NSN, etc.
Type No.
AVUM
AVUIM
AN/URM-127
X
AN/USM-223
X
X
AN/USM-281
X
ME-30E/U
X
TK-100/G
X
TK-101/G
X
TK- 1 05/G
X
ll-A-49
