Part Details | VARIABLE ATTENUATOR
5985-00-403-9718 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: 17134961, 17-13496-1, 17134961, 17-13496-1, 17134961, 17-13496-1, 5985-00-403-9718, 00-403-9718, 5985004039718, 004039718
| Supply Group (FSG) | NSN Assigned | NIIN | Item Name Code (INC) |
|---|---|---|---|
| 59 | AUG 04, 1969 | 00-403-9718 | 00838 ( ATTENUATOR, VARIABLE ) |
REFERENCE DRAWINGS & PICTURES
WAVEGUIDE TYPE
Cross Reference | NSN 5985-00-403-9718
| Part Number | Cage Code | Manufacturer |
|---|---|---|
| 17-13496-1 | 80070 | LOCKHEED MARTIN CORPORATIONDBA LOCKHEED MARTIN |
| 17-13496-1 | 25531 | SPACE MACHINE & ENGINEERING CORP. |
| 17-13496-1 | 04614 | TEXTRON SYSTEMS CORPORATIONDBA TEXTRON DEFENSE SYSTEMS |
Technical Data | NSN 5985-00-403-9718
| Characteristic | Specifications |
|---|---|
| APPLICATION DESIGN | WAVEGUIDE |
| VOLTAGE STANDING WAVE RATIO | 1.07 |
| OVERALL ATTENUATION RANGE IN DECIBELS | P20.0/P45.0 |
| ATTENUATION VARIATION METHOD | CONTINUOUS |
| BODY STYLE | WAVEGUIDE TYPE |
| OVERALL LENGTH | 3.475 INCHES NOMINAL |
| OVERALL HEIGHT | 1.775 INCHES NOMINAL |
| OVERALL WIDTH | 1.700 INCHES NOMINAL |
| ADJUSTMENT DEVICE TYPE AND QUANTITY | 1 SLOTTED SCREW |
| TERMINAL TYPE AND QUANTITY | 2 FLANGE |
| WAVEGUIDE FLANGE DESIGNATION | UG-599/U |
| MOUNTING FACILITY TYPE AND QUANTITY | 4 UNTHREADED HOLE |
| MOUNTING FACILITY PATTERN | FOUR POSITION RECTANGULAR |
| UNTHREADED MOUNTING HOLE DIAMETER | 0.116 INCHES NOMINAL |
| CENTER TO CENTER DISTANCE BETWEEN MOUNTING FACILITIES PARALLEL TO LENGTH | 0.530 INCHES NOMINAL |
| CENTER TO CENTER DISTANCE BETWEEN MOUNTING FACILITIES PARALLEL TO WIDTH | 0.500 INCHES NOMINAL |
| SPECIAL FEATURES | PORT 1 HAS 90-DEGREE BEND. WEAPON SYSTEM ESSENTIAL |
| CRITICALITY CODE JUSTIFICATION | FEAT |
| WAVEGUIDE FLANGE TYPE | CHOKE |
| END ITEM IDENTIFICATION | LANDING SYSTEM AUTOMATIC CARRIER, DUAL CHANNEL, AN/SPN-42T-3, 42T-4,AND AN/SPN-46 (V) 1, NIMITZ CLASS CVN, FORRESTAL CLASS CV |