| 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) | 00-825-6734 (008256734) |
| NCB Code | USA (00) |
| MRC | Criteria | Characteristic |
|---|---|---|
| ACZB | FREQUENCY RATING | 0.2 KILOHERTZ MINIMUM AND 4.5 KILOHERTZ MAXIMUM |
| AEZD | SWITCH | NOT INCLUDED |
| AFYV | DC RESISTANCE RATING IN OHMS | 40.0 NOMINAL |
| AHEQ | EARPHONE ELEMENT TYPE | MAGNETIC |
| AHES | EARPHONE QUANTITY | 1 |
| AMSA | CONTROLLING AGENCY | WESTERN ELECTRIC CO INC |
| AMSB | IDENTIFYING NUMBER | N-1 /5965-242-6558/ TYPE NO. |
| APAM | OPERATING CURRENT RATING | 0.1 MILLIAMPERES NOMINAL |
| BKSQ | EARPHONE IMPEDANCE RATING | 600.0 OHMS NOMINAL |
| BKSS | EARPHONE CONTROLLING AGENCY | WESTERN ELECTRIC CO INC |
| BKST | EARPHONE IDENTIFYING NUMBER | HC-4 /5965-284-9412/ TYPE NO. |
| BKSX | OUTPUT LEVEL RATING | 10 DB BELOW 6 MV |
| BKSY | EARPHONE MOUNTING METHOD | SUSPENDED ON HEADBAND |
| BKSZ | MICROPHONE MOUNTING FACILITY | ADAPTER FASTENED TO LEFT SIDE OF HEADBAND |
| BKTB | CONNECTOR NAME | PLUG |
| BKTF | CONNECTOR IDENTIFYING NUMBER | 289B /5935-192-4779/ TYPE NO. |
| BKTG | CONNECTOR TO JUNCTION CORD LENGTH | 8.000 FEET |
| BLJN | CONNECTOR CONTROLLING AGENCY | WESTERN ELECTRIC CO INC |
| AFYY | IMPEDANCE RATING | 600.0 OHMS NOMINAL |
| BKSW | MICROPHONE ELEMENT TYPE | CARBON |
| 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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