The Tuner,radio Frequency, cataloged under National Stock Number 5820-01-021-6443, 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 Technical Services Laboratory, Inc. Dba Technical Services Laboratory Inc. Government technical data includes 6 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through both NSN and commercial part number lookups. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5820-01-021-6443 |
| Primary Part Number | ESH-204-4 |
| Item Name | Tuner,radio Frequency |
| FSC / FSG | 5820 / 58 — Radio and Television Communication Equipment, Except Airborne |
| Manufacturer | Technical Services Laboratory, Inc. Dba Technical Services Laboratory Inc |
| Status | ACTIVE |
| Circuit Construction Type | SOLID STATE |
| Frequency Per Channel | 300.0 MEGAHERTZ MAXIMUM OPERATING CHANNEL |
| Frequency Per Channel | 190.0 MEGAHERTZ MINIMUM OPERATING CHANNEL |
| Features Provided | AUTOMATIC GAIN CONTROL |
| External DC Operating Voltage in Volts | -12.0 NOMINAL 1ST VOLTAGE |
| External DC Operating Voltage in Volts | 12.0 NOMINAL 2ND VOLTAGE |
| 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 |
|---|---|
| ESH-204-4 PRIMARY | Technical Services Laboratory, Inc. Dba Technical Services Laboratory Inc (USA) |
| Reference | Meaning |
|---|---|
| ESH204-4 | C/1 Advisory reference — outside the item-of-supply concept Applied Communications a Div of Amstar Technical Products Co Inc an Affiliate of Amstar Corp |
| 3SH-204-4 | C/1 Advisory reference — outside the item-of-supply concept Applied Communications a Div of Amstar Technical Products Co Inc an Affiliate of Amstar Corp |
| ESH-204-4 | 5/9 Secondary reference Aiken Advanced Systems Inc a Div of Amstar Technical Products Inc an Affil of Amstar Corp |
NSN 5820-01-021-6443 is a Tuner,radio Frequency, manufactured by Technical Services Laboratory, Inc. Dba Technical Services Laboratory Inc, classified under FSC 5820, Radio and Television Communication Equipment, Except Airborne. Status: active.
NSN 5820-01-021-6443 has 1 manufacturer part number on file: ESH-204-4 (Technical Services Laboratory, Inc. Dba Technical Services Laboratory Inc).
Key specifications for ESH-204-4: Circuit Construction Type: SOLID STATE; Frequency Per Channel: 300.0 MEGAHERTZ MAXIMUM OPERATING CHANNEL; Frequency Per Channel: 190.0 MEGAHERTZ MINIMUM OPERATING CHANNEL; Features Provided: AUTOMATIC GAIN CONTROL. 6 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 5820-01-021-6443 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.