Military-Grade 6 km & 10 km Laser Measurement Systems
The TFN BKD Series consists of high-performance long-range laser rangefinders designed for precision distance measurement in demanding military, surveying, infrastructure, and industrial environments.
- BK6D: Effective Range ≥ 6 km
- BK10D: Effective Range ≥ 10 km
- Three Integrated Measurement Modes
- Digital Range Gating
- Horizontal & Vertical Distance Calculation
- Height Difference Measurement
- Slope Distance Measurement
- Azimuth & Angle Measurement
- Illuminated Reticle
- RS232 Data Output
- External Trigger Support
- Waterproof & Anti-Vibration Design
Long-Range Measurement for Mission-Critical Operations
The BKD Series is engineered for applications where accurate distance information must be obtained over extended ranges.
With effective ranging capability up to 6 km or 10 km depending on model selection, operators can measure distant targets quickly and accurately without moving closer to the objective.
Whether deployed for military observation, utility inspection, topographic surveying, or offshore engineering, the system delivers reliable long-range measurement performance when precision matters most.
Multi-Parameter Measurement Beyond Simple Distance
The BKD Series provides more than line-of-sight ranging.
Its onboard calculation engine delivers:
- Straight-line distance
- Horizontal distance
- Vertical distance
- Height difference
- Slope distance
- Horizontal angle
- Azimuth information
This allows operators to obtain critical spatial data directly in the field without relying on manual calculations or additional instruments.
Three Dedicated Measurement Modes for Complex Field Tasks
Different missions require different measurement methods.
The BKD Series incorporates three specialized operating modes designed to support a wide range of professional applications.
Mode 1 – Single Target Measurement
Provides distance, horizontal distance, vertical distance, azimuth, and angular information for a single target.
Mode 2 – Height Difference Measurement
Measures elevation difference and vertical separation between two points located on the same vertical plane.
Mode 3 – Two-Point Spatial Measurement
Calculates slope distance and horizontal span between two independent points in space.
Digital Range Gating for Improved Target Discrimination
The integrated digital range gating function enables operators to define a specific ranging window and ignore unwanted reflections outside the selected distance zone.
This capability is particularly valuable when measuring targets located behind vegetation, utility lines, structures, or other environmental clutter.
Adjustable range gating improves target selection and helps ensure that measurements are taken from the intended object rather than surrounding obstacles.
Optimized for Day and Night Operations
The BKD Series features an illuminated reticle and integrated digital display that remain clearly visible under low-light conditions.
Operators can conduct ranging and observation tasks during dawn, dusk, nighttime operations, or adverse weather conditions without requiring additional illumination devices.
Rugged Design for Extreme Environments
Built for demanding field deployment, the BKD Series features a sealed housing and anti-vibration construction designed to withstand harsh environmental conditions.
The system operates within a temperature range of -40°C to +60°C and supports operation in high-humidity environments.
Its robust design makes it suitable for military deployments, remote infrastructure inspections, offshore projects, and severe-weather operations.
RS232 Communication and Remote Operation
The standard RS232 interface enables direct data transmission to external systems including GPS devices, data loggers, tactical computers, and command-and-control platforms.
An external trigger interface allows operators to activate measurements remotely, supporting fixed installations, vehicle-mounted systems, and protected observation positions.
| Parameter | Specification |
| Models | BK6D (6 km effective range), BK10D (10 km effective range) |
| Minimum ranging distance | ≤50 m |
| Maximum range (display) | 9999 m |
| Ranging accuracy | ±1 m (30 m–1000 m); ±2 m (1000 m–10000 m) |
| Range resolution | ≤30 m |
| Repetition rate | 6 times/min (continuous); 10 times/min (emergency) |
| Digital range gating | 10 m-6000 m continuously adjustable, displayed digitally in eyepiece |
| Hit probability | ≥ 98% |
| Measurement modes | Mode 1 (single target: SD, HD, VD, angle, azimuth); Mode 2 (two vertical targets: SD1, SD2, VD1, VD2, height difference); Mode 3 (two arbitrary points: SD1, SD2, HD1, HD2, slope distance, horizontal span) |
| Laser type | Nd:YAG, wavelength 1.064 μm |
| Optical magnification | 7x |
| Field of view (horizontal) | 7° |
| Exit pupil diameter | 6 mm |
| Exit pupil distance | 20 mm |
| Resolution | 8 seconds |
| Power supply | Two 16340 lithium batteries (700 mAh each) |
| Data interface | RS232 serial (standard) |
| Operating temperature | -40°C to +60°C |
| Max relative humidity | 95–98% |
| Housing protection | Sealed waterproof, anti-vibration design |
| Dimensions (max) | 202 × 150 × 90 mm |
| Weight | <1.5 kg (excluding batteries) |
| Accessories included | Carrying bag, external trigger cable, RS232 communication cable |
Applications
Measure the distance to vehicles, structures, observation posts, and other objects of interest during reconnaissance operations.
Artillery & Fire Support Preparation
Provide accurate range data to support target assessment and fire planning activities.
Border Surveillance
Monitor large border sectors and determine the distance to personnel, vehicles, and infrastructure.
Tactical Reconnaissance
Support route assessment, terrain evaluation, and observation missions in complex operational environments.
Coastal & Maritime Security
Measure distances to vessels, offshore structures, and coastal facilities during maritime monitoring operations.
Frequently Asked Questions
A laser rangefinder binocular combines traditional binocular observation with an integrated laser distance measurement system, allowing users to observe and measure targets using a single device.
The system can calculate straight-line distance, horizontal distance, vertical distance, height difference, slope distance, azimuth, and angle information.
Digital range gating allows operators to select a specific ranging window and ignore unwanted reflections outside the selected distance range, improving target discrimination in cluttered environments.
Yes. The illuminated reticle and integrated display support observation and measurement operations in low-light and nighttime environments.
The BK6D provides an effective ranging distance of at least 6 km, while the BK10D provides an effective ranging distance of at least 10 km under appropriate target and environmental conditions.