The Receiver,time Frequency, cataloged under National Stock Number 5820-01-054-4899, 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 Symmetricom, Inc. Government technical data includes 1 specification, 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. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5820-01-054-4899 |
| Primary Part Number | WVTR MARK IV |
| Item Name | Receiver,time Frequency |
| FSC / FSG | 5820 / 58 — Radio and Television Communication Equipment, Except Airborne |
| Manufacturer | Symmetricom, Inc |
| Status | ACTIVE |
| General Characteristics Item Description | OPERATING FREQUENCIES: 2.5,5,10,15,20,AND 25 MHZ; MODE: AM AND MCW; SENSITIVITY: 1UV WITH BETTER THAN 15 DB(S+N)/N; BANDWITH: PORM 1 KHZ AT 3 DB DOWN; AGC ACTION: LESS THAN 5 DB CHANGE IN AUDIO OUTPUT FROM 10UV TO 100 MV INPUT; PANEL METER: 3 POSITIONS; R.F. INPUT: 1 50 OHM UNBALANCED 2 HIGH 2; AUDIO FILTER: 100,440,500,600,1000 HZAND VOICE; POWER REQUIREMENTS: 117V AC,50-400 HZ,OR 12-16 VDC EXTERNAL (2 WATTS APPROXIMATELY); OUTPUT CLASS AB OUTPUT IS AT LEAST 1V RMS ACROSS 100 OHMS; SIZE: 3 1/2" X 19" X 6 3/4" DEEP; WEIGHT: NET 4 1/2 KG (9 1/2 LBS.) MHz |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL C — Remove/Demil Key Points |
| Hazard | Possible hazard — SDS may be required (DLA HMIC P) |
| Criticality Code | X |
| Part Number | Manufacturer |
|---|---|
| WVTR MARK IV PRIMARY | Symmetricom, Inc (USA) |
NSN 5820-01-054-4899 is a Receiver,time Frequency, manufactured by Symmetricom, Inc, classified under FSC 5820, Radio and Television Communication Equipment, Except Airborne. Status: active.
NSN 5820-01-054-4899 has 1 manufacturer part number on file: WVTR MARK IV (Symmetricom, Inc).
Key specifications for WVTR MARK IV: General Characteristics Item Description: OPERATING FREQUENCIES: 2.5,5,10,15,20,AND 25 MHZ; MODE: AM AND MCW; SENSITIVITY: 1UV WITH BETTER THAN 15 DB(S+N)/N; BANDWITH: PORM 1 KHZ AT 3 DB DOWN; AGC ACTION: LESS THAN 5 DB CHANGE IN AUDIO OUTPUT FROM 10UV TO 100 MV INPUT; PANEL METER: 3 POSITIONS; R.F. INPUT: 1 50 OHM UNBALANCED 2 HIGH 2; AUDIO FILTER: 100,440,500,600,1000 HZAND VOICE; POWER REQUIREMENTS: 117V AC,50-400 HZ,OR 12-16 VDC EXTERNAL (2 WATTS APPROXIMATELY); OUTPUT CLASS AB OUTPUT IS AT LEAST 1V RMS ACROSS 100 OHMS; SIZE: 3 1/2" X 19" X 6 3/4" DEEP; WEIGHT: NET 4 1/2 KG (9 1/2 LBS.) MHz; End Item Identification: AN/FPS-115. 1 specification is 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 5820-01-054-4899 has DEMIL Code C. 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.