Part Details | VARIABLE ATTENUATOR
5985-00-411-5158 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: 990C805H01, 990C805H01, 730, 990C805H01, 5985-00-411-5158, 00-411-5158, 5985004115158, 004115158
| Supply Group (FSG) | NSN Assigned | NIIN | Item Name Code (INC) |
|---|---|---|---|
| 59 | AUG 25, 1969 | 00-411-5158 | 00838 ( ATTENUATOR, VARIABLE ) |
REFERENCE DRAWINGS & PICTURES
WAVEGUIDE TYPE
Cross Reference | NSN 5985-00-411-5158
| Part Number | Cage Code | Manufacturer |
|---|---|---|
| 990C805H01 | 62874 | 3DBM CO INCWAVEGUIDE GROUP |
| 990C805H01 | 5Z167 | ASTRO MICROWAVE INC |
| 730 | 99899 | L3 TECHNOLOGIES, INC.DBA NARDA MICROWAVE EAST |
| 990C805H01 | 18323 | NORTHROP GRUMMAN SYSTEMS CORPORATIONDBA ELECTRONIC SYSTEMS |
Technical Data | NSN 5985-00-411-5158
| Characteristic | Specifications |
|---|---|
| APPLICATION DESIGN | WAVEGUIDE |
| FREQUENCY RANGE | 8.200 GIGAHERTZ MINIMUM AND 12.400 GIGAHERTZ MAXIMUM |
| VOLTAGE STANDING WAVE RATIO | B1.00$$B1.15 |
| POWER RATING | 2.0 WATTS AVERAGE |
| INSERTION LOSS AT MINIMUM ATTENUATION IN MAXIMUM DECIBELS | 0.5 |
| OVERALL ATTENUATION RANGE IN DECIBELS | P0.0/P20.0 |
| OVERALL ATTENUATION ACCURACY IN DECIBELS | M0.20/P0.20 |
| ATTENUATION VARIATION METHOD | CONTINUOUS |
| BODY STYLE | WAVEGUIDE TYPE |
| OVERALL LENGTH | 3.250 INCHES NOMINAL |
| OVERALL HEIGHT | 2.180 INCHES NOMINAL |
| OVERALL WIDTH | 2.780 INCHES NOMINAL |
| ADJUSTMENT DEVICE TYPE AND QUANTITY | 1 KNOB |
| TERMINAL TYPE AND QUANTITY | 2 FLANGE |
| WAVEGUIDE FLANGE DESIGNATION | UG-39/U |
| MOUNTING FACILITY TYPE AND QUANTITY | 4 UNTHREADED HOLE |
| MOUNTING FACILITY PATTERN | FOUR POSITION RECTANGULAR |
| UNTHREADED MOUNTING HOLE DIAMETER | 0.169 INCHES MINIMUM |
| CENTER TO CENTER DISTANCE BETWEEN MOUNTING FACILITIES PARALLEL TO LENGTH | 1.280 INCHES NOMINAL |
| CENTER TO CENTER DISTANCE BETWEEN MOUNTING FACILITIES PARALLEL TO WIDTH | 1.220 INCHES NOMINAL |
| TEST DATA DOCUMENT | 18323-990805H01 DRAWING (THIS IS THE BASIC GOVERNING DRAWING, SUCH AS A CONTRACTOR DRAWING, ORIGINAL EQUIPMENT MANUFACTURER DRAWING, ETC.; EXCLUDES ANY SPECIFICATION, STANDARD OR OTHER DOCUMENT THAT MAY BE REFERENCED IN A BASIC GOVERNING DRAWING) |
| OPERATING TEMP RANGE | +40.0 TO +115.0 DEG FAHRENHEIT |
| WAVEGUIDE FLANGE TYPE | COVER |
| WAVEGUIDE DESIGNATION | RG-52/U |
| BODY MATERIAL | BRASS |
| PRECIOUS MATERIAL | RHODIUM AND SILVER |
| PRECIOUS MATERIAL AND LOCATION | BODY RHODIUM AND BODY SILVER |