Part Details | VARIABLE ATTENUATOR
5985-00-520-3974 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: 2280764, 228076-4, 8121S, 5985-00-520-3974, 00-520-3974, 5985005203974, 005203974
| Supply Group (FSG) | NSN Assigned | NIIN | Item Name Code (INC) |
|---|---|---|---|
| 59 | AUG 19, 1974 | 00-520-3974 | 00838 ( ATTENUATOR, VARIABLE ) |
REFERENCE DRAWINGS & PICTURES
COAXIAL TYPE
Cross Reference | NSN 5985-00-520-3974
| Part Number | Cage Code | Manufacturer |
|---|---|---|
| 228076-4 | 37695 | RAYTHEON COMPANYDBA RAYTHEON |
| 8121S | 04423 | TELONIC BERKELEY, INC. |
Technical Data | NSN 5985-00-520-3974
| Characteristic | Specifications |
|---|---|
| APPLICATION DESIGN | TRANSMISSION LINE |
| FREQUENCY RANGE | 0.000 HERTZ MINIMUM AND 2.000 GIGAHERTZ MAXIMUM |
| IMPEDANCE RATING IN OHMS | 50.0 INPUT-OUTPUT |
| VOLTAGE STANDING WAVE RATIO | 1.30 |
| POWER RATING | 3.0 WATTS AVERAGE AND 200.0 WATTS PEAK |
| INSERTION LOSS AT MINIMUM ATTENUATION IN MAXIMUM DECIBELS | 0.2 |
| OVERALL ATTENUATION RANGE IN DECIBELS | P0.0/P60.0 |
| OVERALL ATTENUATION ACCURACY IN DECIBELS | M1.80/P1.80 |
| ATTENUATION VARIATION METHOD | STEPPED |
| STEP POSITION QUANTITY | 10 |
| ATTENUATION PER STEP IN DECIBELS | 10.0 |
| BODY STYLE | COAXIAL TYPE |
| OVERALL LENGTH | 3.200 INCHES NOMINAL |
| OVERALL HEIGHT | 2.120 INCHES NOMINAL |
| OVERALL WIDTH | 1.310 INCHES NOMINAL |
| ADJUSTMENT DEVICE TYPE AND QUANTITY | 1 KNOB AND 1 SHAFT |
| SHAFT TYPE | ROUND |
| SHAFT DIAMETER | 0.250 INCHES NOMINAL |
| SHAFT LENGTH | 0.930 INCHES NOMINAL |
| TERMINAL TYPE AND QUANTITY | 2 CONNECTOR, COAXIAL, MALE |
| COAXIAL CONNECTOR SERIES DESIGNATION | SMA |
| MOUNTING FACILITY TYPE AND QUANTITY | 4 THREADED HOLE |
| MOUNTING FACILITY SCREW THREAD SERIES DESIGNATOR | UNC |
| MOUNTING FACILITY NOMINAL SCREW THREAD DIAMETER | 0.138 INCHES |
| MOUNTING THREAD QUANTITY | 32 PER INCH |
| OPERATING TEMP RANGE | -55.0 TO +85.0 DEG CELSIUS |
| BODY MATERIAL | ALUMINUM ALLOY |
| END ITEM IDENTIFICATION | TEST SET,RADAR RECEIVER AN/ALM-140 |
| FSC APPLICATION DATA | ANTENNAS,WAVEGUIDES,AND RELATED EQUIPMENT |