| Item Name | Headset Microphone |
| Federal Supply Group (FSG) | Electrical and Electronic Equipment Components |
| Federal Supply Class (FSC) | 5965 Headset Handset Microphone and Speak |
| National Item Identification Number (NIIN) | 00-755-4656 (007554656) |
| NCB Code | USA (00) |
| MRC | Criteria | Characteristic |
|---|---|---|
| ACZB | FREQUENCY RATING | 0.2 KILOHERTZ MINIMUM AND 5.0 KILOHERTZ MAXIMUM |
| AEZD | SWITCH | NOT INCLUDED |
| AFYY | IMPEDANCE RATING | 3.5 OHMS NOMINAL |
| AHEQ | EARPHONE ELEMENT TYPE | DYNAMIC |
| AHES | EARPHONE QUANTITY | 2 |
| AMSA | CONTROLLING AGENCY | JETDS |
| BKSQ | EARPHONE IMPEDANCE RATING | 19.0 OHMS NOMINAL |
| BKSS | EARPHONE CONTROLLING AGENCY | JETDS |
| BKSW | MICROPHONE ELEMENT TYPE | DYNAMIC |
| BKSX | OUTPUT LEVEL RATING | 2 UV PER DYNE PER SQ CM IN. 5 OHMS LOAD |
| BKSY | EARPHONE MOUNTING METHOD | SUSPENDED ON HEADBAND |
| BKSZ | MICROPHONE MOUNTING FACILITY | ON BRACKET WHICH FITS ON EITHER LEFT OR RIGHT EARCUP AND LOCKS |
| BKTB | CONNECTOR NAME | TELEPHONE PLUG |
| BKTF | CONNECTOR IDENTIFYING NUMBER | U-174/U TYPE NO. |
| BKTG | CONNECTOR TO JUNCTION CORD LENGTH | 1.959 FEET |
| BLJN | CONNECTOR CONTROLLING AGENCY | JETDS |
| ZZZT | NONDEFINITIVE SPEC/STD DATA | H-157/AIC TYPE |
| AMSB | IDENTIFYING NUMBER | M-87/AIC TYPE NO. |
| BKST | EARPHONE IDENTIFYING NUMBER | H-143/AIC TYPE NO. |
| 5905-00-000-0136 (5905000000136) | 5905-00-001-2573 (5905000012573) | 5905-00-001-2813 (5905000012813) | 5905-00-001-2834 (5905000012834) |
| 5905-00-001-2852 (5905000012852) | 5905-00-001-2882 (5905000012882) | 5905-00-001-2890 (5905000012890) | 5905-00-001-2920 (5905000012920) |
| 5905-00-001-2934 (5905000012934) | 5905-00-001-2951 (5905000012951) | 5905-00-001-2952 (5905000012952) | 5905-00-001-2954 (5905000012954) |
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