The Modulator,radio Transmitter, cataloged under National Stock Number 5820-01-502-9470, is classified within Federal Supply Class 5820 (Radio and Television Communication Equipment, Except Airborne) of the Communication, Detection, and Coherent Radiation Equipment group. The manufacturer of record is International Microwave Corp. Government technical data includes 15 specifications, cited from the U.S. Government catalog. The record lists 1 manufacturer part number for this item, enabling identification through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5820-01-502-9470 |
| Primary Part Number | C-503 |
| Item Name | Modulator,radio Transmitter |
| FSC / FSG | 5820 / 58 — Radio and Television Communication Equipment, Except Airborne |
| Manufacturer | International Microwave Corp |
| Status | ACTIVE |
| Circuit Construction Type | SOLID STATE |
| FSC Application Data | RADAR TRANSMIT SET |
| Inclosure Type | ENCAPSULATED |
| Control Type | LOCAL |
| Emission Type | F4 |
| Average Power Rating Per Channel | 110.0 WATTS OUTPUT |
| Operating AC Frequency in Hertz | 60.0 NOMINAL SINGLE VOLTAGE |
| Operating Control Method | AUTOMATIC |
| Basic Shape Style | RECTANGULAR OR SQUARE |
| Maximum Operating Altitude Rating | 8000.0 FEET FT |
| Individual Step Frequency | 6.8 GIGAHERTZ AND 8.4 GIGAHERTZ |
| Average Life Measurement | NOT RATED |
| Operating Temp Range | -30.0 TO 60.0 CELSIUS DEGC |
| External AC Operating Voltage in Volts | 120.0 NOMINAL SINGLE VOLTAGE |
| Installation Design | RACK |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL D — Destroy Item |
| Hazard | Possible hazard — SDS may be required (DLA HMIC P) |
| Criticality Code | X |
| Part Number | Manufacturer |
|---|---|
| C-503 PRIMARY | International Microwave Corp (USA) |
| Reference | Meaning |
|---|---|
| SC5820-0008-10 | 7/9 Vendor item drawing reference Drs Icas, Llc |
NSN 5820-01-502-9470 is a Modulator,radio Transmitter, manufactured by International Microwave Corp, classified under FSC 5820, Radio and Television Communication Equipment, Except Airborne. Status: active.
NSN 5820-01-502-9470 has 1 manufacturer part number on file: C-503 (International Microwave Corp).
Key specifications for C-503: Circuit Construction Type: SOLID STATE; Overall Height: 20.000 INCHES NOMINAL IN; FSC Application Data: RADAR TRANSMIT SET; Inclosure Type: ENCAPSULATED. 15 specifications are documented in the U.S. Government catalog.
Possible hazard — SDS may be required (DLA HMIC P). Hazard information on this page is shown exactly as it appears in the DLA record.
NSN 5820-01-502-9470 has DEMIL Code D. Demilitarization may be required before disposal or transfer to non-military entities.
U.S. Government catalog: edition PUBLOGDVD v12.0.0 (OCT 2026), edition date 2026-10-01, retrieved 2026-10-16.
U.S. Government catalog: edition PUBLOGDVD v12.0.0 (OCT 2026), edition date 2026-10-01, retrieved 2026-10-18.