| Item Name | Meter Electrical Fr |
| Federal Supply Group (FSG) | Instruments and Laboratory Equipment |
| Federal Supply Class (FSC) | 6625 Electrical and Electronic Properties Measuring and Testing Instruments |
| National Item Identification Number (NIIN) | 00-539-9910 (005399910) |
| NCB Code | USA (00) |
| Manufacturer | Joint Electronics Type Designation System |
| MRC | Criteria | Characteristic |
|---|---|---|
| RDAL | III REFERENCE DATA AND LITERATURE | DEPT OF ARMY PUBLICATIONS: TM11-5096 W/CHANGES 1 AND 2,OCT 55; TM11-6625-312-12P W/CHANGE 1,JUL 59; TM11-6625-312-35P W/CHANGE 2,JUL 59; TB11-6625-312-35/1 |
| TMDN | III TYPE/MODEL DESIGNATION | AN/URM-81 |
| ACZB | FREQUENCY RATING | 1.0 KILOHERTZ MINIMUM AND 50.0 KILOHERTZ MAXIMUM |
| SR-5 | MANUFACTURERS CODE | 80058 |
| FAAZ | PHASE | SINGLE |
| NTRD | III ENTRY DATE | 70-01-09 |
| FCLS | III FUNCTIONAL CLASSIFICATION | AA-6.3 |
| SR-5 | THE MANUFACTURERS DATA | |
| SR-1 | MANUFACTURERS CODE | 81349 |
| ABMK | OVERALL WIDTH | 17.375 INCHES NOMINAL |
| SR-1 | NON-DEFINITIVE GOVERNMENT SPEC/STD REFERENCE | F10636 |
| AKYN | FURNISHED ITEMS AND QUANTITY | FREQUENCY METER FR-6/U 1,CASE METER CY- 1501/U 1,CORD CG-409/U 1,FREQUENCY DATA BOOK 1 |
| CBBL | FEATURES PROVIDED | INTERNAL FREQUENCY CALIBRATING CRYSTAL |
| ABHP | OVERALL LENGTH | 19.000 INCHES NOMINAL |
| ANSY | FREQUENCY RESPONSE RANGE | 100.0 TO 500.0 MEGAHERTZ |
| MATT | MATERIAL | ALUMINUM |
| SR-5 | DESIGN CONTROL REFERENCE | ANURM81 |
| SR-1 | SPEC/STD CONTROLLING DATA | |
| ABKW | OVERALL HEIGHT | 12.500 INCHES NOMINAL |
| FTLD | III FUNCTIONAL DESCRIPTION | PORTABLE INSTRUMENT CAPABLE OF MEASURING ANY FREQUENCY WITHIN THE RANGE OF 100 TO 500 MHZ W/ACCURACY OF PORM 0.001 PCT. USES HETERODYNE PRINCIPLE FOR DETERMINING FREQUENCY OF AN UNKNOWN SIGNAL; MEASUREMENT IS ACCOMPLISHED BY HETERDYNING A KNOWN SIGNAL FROM THE TEST INSTRUMENT AGAINST THE UNKNOWN SIGNAL. CHECK POINTS ARE USED TO CALIBRATE THE INSTRUMENT THROUGHOUT ITS OPERATING RANGE. USED TO TEST THE FOLLOWING AVIONICS SYSTEMS: AN/AKT-18; AN/ARA-31; AN/ARC-54; AN/ARC-60; AN/ARC-73; AN/ARN-30(); AN/CRD-4; AN/TRC-68; AN/URR-35C; R-508/ARC; R-509/ARC,AND T-366()/ARC |
| Relevant Components for NSN - 6625-00-539-9910, 6625005399910 | ||||
| 6625-01-554-2550 (6625015542550) | 6680-01-057-6351 (6680010576351) | 6685-01-448-2701 (6685014482701) | 6680-01-423-6378 (6680014236378) | |
| 6625-00-076-4600 (6625000764600) | 6625-01-484-5170 (6625014845170) | 6685-01-417-9116 (6685014179116) | 6670-01-102-5410 (6670011025410) | |
| 6680-01-026-3494 (6680010263494) | 6625-01-366-3836 (6625013663836) | 6625-01-481-0733 (6625014810733) | 6605-00-146-0236 (6605001460236) | |
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