NSN 5985-00-259-3939 SCB72791, 1C12558, 00-259-3939
Product Details | VARIABLE ATTENUATOR
5985-00-259-3939 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).
Part Alternates: SCB72791, 1C12558, 5985-00-259-3939, 00-259-3939, 5985002593939, 002593939
Electrical and Electronic Equipment Components | Antennas, Waveguides, and Related Equipment
| Supply Group (FSG) | NSN Assign. | NIIN | Item Name Code (INC) |
|---|---|---|---|
| 59 | 01 JAN 1963 | 00-259-3939 | 00838 ( ATTENUATOR, VARIABLE ) |
Drawings & Photos | NSN 5985-00-259-3939
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Technical Data | NSN 5985-00-259-3939
| Characteristic | Specifications |
|---|---|
| APPLICATION DESIGN | TRANSMISSION LINE |
| FREQUENCY RANGE | 1.000 MEGAHERTZ MINIMUM AND 20.000 MEGAHERTZ MAXIMUM |
| IMPEDANCE RATING IN OHMS | 50.0 INPUT-OUTPUT |
| VOLTAGE STANDING WAVE RATIO | ANY ACCEPTABLE |
| POWER RATING | 1.0 WATTS AVERAGE |
| OVERALL ATTENUATION RANGE IN DECIBELS | 0.0 TO 100.0 |
| OVERALL ATTENUATION ACCURACY IN DECIBELS | -2.00 TO 2.00 |
| ATTENUATION VARIATION METHOD | STEPPED |
| STEP POSITION QUANTITY | 5 |
| ATTENUATION PER STEP IN DECIBELS | 20.0 |
| BODY STYLE | 10A COAXIAL TYPE |
| OVERALL LENGTH | 3.500 INCHES NOMINAL |
| OVERALL HEIGHT | 2.500 INCHES NOMINAL |
| OVERALL WIDTH | 2.500 INCHES NOMINAL |
| ADJUSTMENT DEVICE TYPE AND QUANTITY | 2 SLOTTED SCREW |
| TERMINAL TYPE AND QUANTITY | 3 TAB, SOLDER LUG |
| MOUNTING FACILITY TYPE AND QUANTITY | 2 BRACKET AND 4 UNTHREADED HOLE |
| MOUNTING FACILITY SCREW THREAD SERIES DESIGNATOR | UNC |
| MOUNTING FACILITY NOMINAL SCREW THREAD DIAMETER | 0.138 INCHES |
| MOUNTING THREAD QUANTITY | 32 PER INCH |
| MOUNTING FACILITY PATTERN | FOUR POSITION RECTANGULAR |
| CENTER TO CENTER DISTANCE BETWEEN MOUNTING FACILITIES PARALLEL TO WIDTH | 2.000 INCHES NOMINAL |
| CENTER TO CENTER DISTANCE BETWEEN MOUNTING FACILITIES PARALLEL TO HEIGHT | 2.000 INCHES NOMINAL |
| SPECIAL FEATURES | INCL SWITCH |
| III SCALE LINEARITY | LINEAR |
| III SCALE DIVISION QUANTITY | 5 |
| III OPERATING TEMP RANGE | -4.0 TO 125.0 DEG FAHRENHEIT |
| III BODY MATERIAL | ALUMINUM |
| III PRECIOUS MATERIAL | SILVER |
Restrictions/Controls & Freight Information | NSN 5985-00-259-3939
| Category | Code | Description |
|---|---|---|
| Shelf-Life Code: | 0 | Nondeteriorative |
| Hazardous Material Indicator Code | P | There is no information in the HMIS; however, the NSN is in an FSC in Table II of Federal Standard 313 and an MSDS may be required by the user. The requirement for an MSDS is dependent on a hazard determination of the supplier or the intended end use of the product |
| Demilitarization Code: | A | Non-Munitions List Item/ Non-Strategic List Item - Demilitarization not required. |
| Controlled Inventory Item Code: | U | UNCLASSIFIED |
| Precious Metals Indicator Code: | S | Item contains silver |
| Criticality Code: | X | The item does not have a nuclear hardened feature or any other critical feature such as tolerance, fit restriction or application. |
| Category | Code | Description |
|---|---|---|
| NMF Description | 061700 | ELEC APPLIANCES/INSTRUMENTS NOI |
| Less than car load rating | ||
| Less than truck load rating | W | Rating Variable |
| Water commodity Code | 72D | unknown |
| Originating Activity Code | XX | |
| Air Dimension Code | A | Shipment is not a consolidation and does not exceed 72 inches in any dimension. |
| Air Commodity | H | Signal Corps supplies and equipment, including radio equipment and supplies, communications equipment and supplies, electrical equipment and supplies, etc. |
| Air Special Handling | Z | No special handling required. |
| Special Handling Code | 9 | unknonwn |
| HAZMAT | ||
| Type of Cargo | Z | No special type of cargo code applicable |