Electro-Optics
UW-NIGHT FLY
Underwater Infrared Personal Marker (Operational Depth: 30m)
The UW-NIGHT FLY is designed for underwater and above-water applications, primarily as a personal marker attached to diving-equipment webbing. It can also be mounted at a fixed location above or below water to guide divers into a target area. Three individual LEDs flash at typically 30 pulses per second for up to 18 hours, depending on battery type. The marker is invisible to the naked eye and is intended for use with a night vision system. A protected on-off toggle switch operates the unit.
Technical Specifications
Mechanical Specifications
| Maximum Height | 140mm |
| Maximum Width | 58mm |
| Weight | 180g including battery |
| Construction | Black Delrin (Zellamiade) |
| Mount | 25 x 20mm diameter pin |
| Operational Depth | 30 meters |
Illumination Specifications
| Source | Solid-state LED; three individual LEDs |
| Output | 820 to 830nm peak intensity |
| Peak Output | 3.0mW at 830nm typical |
| Standard Flash Rate | 30pps; other rates available on request |
| Ground-to-Ground Range | Approximately 1km with 1 night vision system |
| Air-to-Ground Range | Approximately 3km with 1 night vision system |
Electrical Specifications
| External Control | On-off toggle switch with silicone switch rubber boot conforming to MIL-B-5423 |
| Toggle Switch Life | 100,000 actuations |
| Rubber Boot Life | Minimum 50,000 actuations |
| Power Source | 9.0V alkaline manganese battery, type MN1604 or equivalent (IEC 6LR61) |
| NATO Stock Number | Y3-6135-99-634-8080 |
| Operational Duration | Approximately 18 hours, subject to battery type |
Standard Supply Package
Plastic case
One MN1604 battery
Modular Accessories & Optional Extras
Directional cap
Mounting stake
Soft carrying bag