NSN 5985-00-978-7755
Part Details | VARIABLE ATTENUATOR
5985-00-978-7755 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: 22121, 212388, MR90060, 24695241REVA, 2469524-1REVA, 2469524, 24695241, 2469524-1, 5985-00-978-7755, 00-978-7755, 5985009787755, 009787755
| Supply Group (FSG) | NSN Assigned | NIIN | Item Name Code (INC) |
|---|---|---|---|
| 59 | OCT 10, 1966 | 00-978-7755 | 00838 ( ATTENUATOR, VARIABLE ) |
REFERENCE DRAWINGS & PICTURES
WAVEGUIDE TYPE
Cross Reference | NSN 5985-00-978-7755
| Part Number | Cage Code | Manufacturer |
|---|---|---|
| 22121 | 99899 | L3 TECHNOLOGIES, INC.DBA NARDA MICROWAVE EAST |
| 212388 | 54647 | MICROTECH, INC. |
| MR90060 | 54647 | MICROTECH, INC. |
| 2469524-1REVA | 10001 | NAVAIR AND NAVSEA MANAGEDORIGINAL DESIGN ACTIVITY DWG NOT |
| 2469524 | 10001 | NAVAIR AND NAVSEA MANAGEDORIGINAL DESIGN ACTIVITY DWG NOT |
| 2469524-1 | 53711 | NAVAL SEA SYSTEMS COMMAND |
Technical Data | NSN 5985-00-978-7755
| Characteristic | Specifications |
|---|---|
| APPLICATION DESIGN | WAVEGUIDE |
| VOLTAGE STANDING WAVE RATIO | 1.15 |
| POWER RATING | 1.0 WATTS AVERAGE |
| INSERTION LOSS AT MINIMUM ATTENUATION IN MAXIMUM DECIBELS | 0.5 |
| ATTENUATION VARIATION METHOD | CONTINUOUS |
| BODY STYLE | WAVEGUIDE TYPE |
| OVERALL LENGTH | 5.984 INCHES MINIMUM AND 6.016 INCHES MAXIMUM |
| OVERALL HEIGHT | 2.984 INCHES MINIMUM AND 3.016 INCHES MAXIMUM |
| OVERALL WIDTH | 3.688 INCHES NOMINAL |
| ADJUSTMENT DEVICE TYPE AND QUANTITY | 1 KNOB |
| TERMINAL TYPE AND QUANTITY | 2 FLANGE |
| WAVEGUIDE FLANGE DESIGNATION | UG40A/U |
| MOUNTING FACILITY TYPE AND QUANTITY | 6 FLANGE W/MOUNTING HOLE |
| MOUNTING FACILITY SCREW THREAD SERIES DESIGNATOR | UNC |
| MOUNTING FACILITY NOMINAL SCREW THREAD DIAMETER | 0.138 INCHES |
| MOUNTING THREAD QUANTITY | 32 PER INCH |
| SCALE LINEARITY | LINEAR |
| WAVEGUIDE FLANGE TYPE | CHOKE |
| FSC APPLICATION DATA | ANTENNAS,WAVEGUIDES,AND RELATED EQUIPMENT |