NSN 5985-00-977-1247
Part Details | VARIABLE ATTENUATOR
5985-00-977-1247 A device for reducing the strength of an alternating current signal either continuously or in steps, without causing appreciable signal distortion, by maintaining substantially constant output and/or input impedance match. Continuously variable resistive devices must consist of at least two sections or one section with at least two rotating contacts. The item must have an overall attenuation rating. Includes tandem mounted variable resistors designed to function as an attenuator but whose terminals are not connected. See also RESISTOR, VAIABLE (as modified).
Alternate Parts: 500L4, 7164469P1, 7164469P1, 5985-00-977-1247, 00-977-1247, 5985009771247, 009771247
| Supply Group (FSG) | NSN Assigned | NIIN | Item Name Code (INC) |
|---|---|---|---|
| 59 | JAN 01, 1963 | 00-977-1247 | 00838 ( ATTENUATOR, VARIABLE ) |
REFERENCE DRAWINGS & PICTURES
UNBALANCED "LL"
Cross Reference | NSN 5985-00-977-1247
| Part Number | Cage Code | Manufacturer |
|---|---|---|
| 500L4 | 12436 | BAE SYSTEMS INFORMATION ANDELECTRONIC SYSTEMS INTEGRATION INC. |
| 7164469P1 | 24446 | GENERAL ELECTRIC COMPANY |
| 7164469P1 | 33173 | MPD, INC. |
Technical Data | NSN 5985-00-977-1247
| Characteristic | Specifications |
|---|---|
| APPLICATION DESIGN | AUDIO |
| SCHEMATIC DIAGRAM DESIGNATOR | UNBALANCED "LL" |
| IMPEDANCE RATING IN OHMS | 500.0 INPUT |
| POWER RATING | 4.0 WATTS AVERAGE |
| OVERALL ATTENUATION RANGE IN DECIBELS | P0.0/P38.0 |
| OVERALL ATTENUATION ACCURACY IN DECIBELS | M2.85/P2.85 |
| ATTENUATION VARIATION METHOD | CONTINUOUS |
| BODY DIAMETER | 1.625 INCHES NOMINAL |
| BUSHING LENGTH | 0.375 INCHES NOMINAL |
| TERMINAL TYPE AND QUANTITY | 4 TAB, SOLDER LUG |
| MOUNTING FACILITY TYPE AND QUANTITY | 1 THREADED BUSHING |
| MOUNTING FACILITY SCREW THREAD SERIES DESIGNATOR | UNEF |
| MOUNTING FACILITY NOMINAL SCREW THREAD DIAMETER | 0.375 INCHES |
| MOUNTING THREAD QUANTITY | 32 PER INCH |