Make your first shot even under extreme conditions…with Kestrel’s advanced environmental data and Horus® ATrag™ ballistics — combined in one powerful 4-oz. tool.
Kestrel Pocket Weather Meters and Horus® Vision have partnered to provide a powerful shooting tool
- The first lightweight hand-held with both comprehensive environmental data and integrated aiming solutions.
- All the environmental measurements, storage and charting capabilities of the powerful, field-proven Kestrel 4500.
- Full-featured Horus® ATrag™ Ballistics software lets you select, store, and customize multiple guns and rounds.
- Up to 5 targets can be customized for location, distance, direction, declination and winds. Solutions update automatically as conditions change.
- NV-preserving Backlight helps preserve night-adapted vision, helps maintain stealth on covert nighttime ops
- Built-in digital compass determines target bearing and wind direction.
- Versatile, thoroughly dependable, pocket-sized Kestrel 4500 NV adds less than 4 oz. to your gear.
- Stores up to 2000 points of weather data, to track changes in the environment over time.
- IP67 waterproof and MIL-STD-810G—for rugged durability in the most extreme environments.
- Kestrel Weather Meters are Made in the U.S.A. and backed by a 5-year Manufacturer’s Warranty.
. Streamline your mission with the combined capabilities of instant, accurate environmental readings along with ballistics algorithms and calculating power equivalent to a ruggedized PDA – all in one unit! The Kestrel 4500 NV with HORUS® ATrag™ Ballistics Software combines the critical environmental data and targeting software solutions required for precision shooting -- all in one four-ounce pocket-sized unit. Previously, shooters would need to obtain environmental data from a Kestrel meter and then
input that data into a PDA loaded with HORUS ATrag software. Now, the Kestrel Ballistics Weather Tracker contains all of the necessary data and solutions in one device to minimize user workload and distraction. Plus, the Kestrel meter is IP67 waterproof and MIL-STD-810F rugged, allowing users to avoid the expense and weight of a ruggedized PDA.
Load and customize multiple guns and rounds from the extensive proprietary Horus database. Current data is available for download from the Kestrel website. Then the Kestrel’s simple, intuitive screens allow the user to create up to five targets customized for location, distance, direction, declination and winds. The Kestrel meter's highly accurate measuring and averaging of wind and digital compass for target bearing and wind direction assists in defining the target winds. Once these parameters are set, the Kestrel meter takes over — tracking the current met data and automatically updating the firing solution using Horus ATrag advanced proprietary algorithms and taking coriolis and spin drift into account. No additional user input is required.
Built in digital compass lets the Kestrel 4500 determine wind direction as well as wind speed. But it doesn’t stop there. The 4500 system also calculates crosswind and headwind/tailwind with reference to a user-set target heading, and stores the information along with all the other environmental readings in its 1400 data point memory.
Kestrel NV: Night-vision-preserving backlight helps sustain natural night vision. Military personnel and pilots flying in darkness are often rightly concerned with preserving their night vision and secure position. In 2005 Kestrel introduced special Model 4000 and 4500 NV Weather Trackers with a new backlight engineered to meet the mission. These special Olive Drab or Desert Tan Kestrels have the same features as their more colorful counterparts, but their reduced brightness backlight helps protect the users’ adapted night vision. It takes 30 to 45 minutes for the average eye to adapt to darkness and maximize night vision. But even a short burst of white, yellow, green or blue light “bleaches out” the rod cell photoreceptors in the eye and causes night blindness until the entire adaptation process can take place again. Light in the red spectrum does not cause this bleaching effect, preventing night blindness and night vision fatigue. The special NV backlight incorporates an optical filter to minimize blue and green spectrum light and reduce overall brightness. It appears soft grayish pink, not red, and is still in the visible spectrum, so it is not compatible with night-vision equipment. But because the dim NV backlight is much more difficult to detect from a distance with the naked eye, it also helps maintain stealth in night or covert operations.
Proven over a decade of tough use. Still the most comprehensive pocket weather meters on the market. Versatile, thoroughly dependable Kestrel 4000-Series Pocket Weather Trackers adds less than 4 ounces to your gear. Yet you get every environmental reading with the press of a single button—and much more. The 4500 is unparalleled in its ease of use and totally customizable navigation and data display. In addition to measuring the current conditions, it tracks and stores up to 2000 sets of data, and data can be uploaded to a PC or Mac with the optional Kestrel Interface. The chart mode allows users to recall and graph up to 4000 measurements, along with the date and time of storage.
Heading (true and magnetic), Wind Direction, Crosswind, Headwind/Tailwind, Altitude, Pressure Trend, Barometric Pressure, Relative Humidity, Heat Stress Index, Dewpoint, Wet Bulb Temperature, Density Altitude, Wind Chill, Air, Snow and Water Temperatures, Current and Average Wind Speeds and Maximum Wind Gust, Customizable 2900 Data Point Storage, Data Upload (with optional interface).. all in one pocket sized instrument. Operates an average 400 hrs. on two regular AAA batteries, which can be easily replaced in the field. Tripod mountable. Attaches to the Kestrel tripod or any standard camera tripod with ¼"-20 thread fitting. Includes 2 AAA batteries, a soft carry pouch, impeller cover, instructions, and a Certificate of Conformity.
Durable? You bet.
Kestrel 4000-Series Pocket Weather Trackers have been subjected to impact, water submersion and extreme temperature tests, and keeps on working. And these popular weather meters have been put to the test under real life working conditions in some of the harshest conditions on the planet. U.S. Special Forces, combat weather teams, wildland firefighters, smoke jumpers, Mt. Everest expeditions and IRL pit crews are just a few who rely on a Kestrel Weather Tracker to provide the crucial environmental data they need. Watch the Weather Channel during a hurricane, and you’re sure to spot a Kestrel being wielded by an intrepid on-screen meteorologist. All Kestrel Weather Meters are Made in the U.S.A. and backed by a 5-year Manufacturer’s Warranty.
The Kestrel 4500 NV with HORUS ATrag is available in Olive Drab and Desert Tan.
Chosen for Military and Police Work
You fearlessly serve and protect our communities. You consider this line of work more than a job – it’s a duty. Kestrel weather meters are on duty with our soldiers, sailors and police – enduring and performing right alongside them.
Sniper Training & Operations
Crosswind strongly influences the accuracy of sharpshooting, becoming the largest error component at long ranges. Even medium crosswind velocities (~5 m/sec) along the flight path of a bullet can cause 1 meter deviations at 500 meters. Temperature, humidity and density altitude also play a part in ballistics performance, and are incorporated into most advanced portable targeting computer applications. The Kestrel 4500 with Horus ATrag Ballistics, with its ability to accurately measure all of these parameters plus offer integrated aiming solutions in one four-ounce, pocket-size package, is on the military sniper’s “most-wanted” list of desired equipment
Drop Zone Safety
Every drop zone requires close monitoring of wind speeds by the DZSO. Featuring icon-based navigation to avoid language confusion, personnel can be taking accurate readings as soon as they reach the hilltop. The Kestrel 4500 adds the option to log readings with date and time stamp for later report preparation, as well as the ability to provide detailed ground weather reports to launch aircraft.
Weather personnel in all forces have come to rely on the Kestrel 4000 or 4500 as a primary or backup meteorological instrument. Combat weathermen, in particular, find the Kestrel a critical tool in forward ground combat scenarios due to its extreme portability and virtually instant use.
Medic Support, Personnel Heat Stress & Exposure Monitoring inTraining & Operations
Extreme conditions of heat and cold are a fact of military life. Kestrel Pocket Weather Meters accurately measure temperature, humidity, heat stress, wet bulb temperature and wind chill, enabling good decision making about work/rest periods, clothing, and hydration in both training and operations. For medics, automatic logging creates a reliable record of conditions for future report preparation.
K9 Operations – Search & Rescue, Mine Removal
Effective and safe K9 operations require close monitoring of the wind speed, temperature and humidity conditions in the area where the dogs are working. Military K9 handlers carry a Kestrel in their pocket to enable them to know their conditions, wherever they are working with their dogs.
Expeditionary Flight Operations
The Kestrel 4000 and 4500 are complete weather systems ideal for forward basing or lake bed flight operations. Even where CWX personnel are not available, personnel on the ground equipped with a Kestrel Pocket Weather Tracker can provide critical landing zone weather data.
NBC & HAZMAT Response
Wind speed and direction, together with temperature, humidity and air density, all impact the behavior and spread of a nuclear, biological, chemical or hazardous material release. The Kestrel 4500, together with a lightweight Tripod and Vane Mount, measures every parameter required for plume prediction plus allows instant wireless data transfer to plume modeling software.
Thermal Imaging (FLIR ) Systems
Relative humidity and ambient temperature affect the transmissivity of the air and impact the effectiveness of forward looking infrared cameras or thermal imaging systems. Kestrel meters offer a lightweight, on-the-spot solution for measuring these and other relevant conditions instantly and accurately.
Kestrel® 4500 Pocket Weather® Tracker – General Capabilities
MANUAL MEMORY BUTTON: Press to manually store current conditions to memory.
MEASUREMENT BUTTONS: Press to scroll between screens: Date/Time, Measurements, User Defined Screens
POWER/SETUP BUTTON: Hold to turn power on or off. Press to enter and exit Main Setup Menu.
BACKLIGHT BUTTON: Press to activate backlight for 1 minute.
MODE BUTTONS: Press to change mode of measurements: Current, Min/Max/Avg, Chart.
COMMAND BUTTON: In Chart Screens, press to view data points. In Setup Menus, press to make selection.
IMPELLER: Zytec™ V-bearings on a user replaceable impeller.
IMPELLER COVER: Swivel cover protects Impeller when not in use.
DATA UPLOAD OPTICAL COUPLER: Software and serial port interface sold separately.
BATTERY DOOR: Sealed with o-ring to keep product watertight.
TEMPERATURE SENSOR: Hermetically sealed precision thermistor coiled to isolate from case temperature.
HUMIDITY SENSOR: Capacitive sensor with secondary thermistor to improve accuracy and response.
PRESSURE SENSOR: Monolithic silicon piezoresistive sensor. DO NOT insert any objects into this hole.
AAA BATTERIES: Average life 400 hrs.
Kestrel 4500 Measures:
- Heading (true & magnetic)
- Wind direction
- Pressure trend
- Barometric pressure
- Wet bulb temperature
- Relative humidity in %
- Heat stress index
- Wet bulb temperature
- Density altitude
- Wind chill
- Air, temperature °F or °C
- Current, average, and maximum air velocity
Kestrel 4500 NV HORUS ATrag software Stores or Calculates:
Target Information: Stores up to 5 Active Targets
Gun/Ammo Information: Stores up to 9 Gun/Ammo Configurations
- Target Range
- Wind direction
- Wind Speed
- Direction of Fire
- Inclination Angle
- Active Targets
- Inclination Cosine
- Target Speed
- Target Direction of Movement
- Muzzle Velocity
Environmental Ballistics Information
- Muzzle Velocity
- Ballistic Coefficient
- Bullet Weight
- Bullet Diameter
- Zero Range
- Bore Height
- Rifling Twist
- Twist Direction
Kestrel 4500 NV Features
- Station Pressure
- Relative Humidity
- Density Altitude (computed)
- Waterproof and floats
- Time and date
- Night-Vision-preserving, soft backlit display
- Data Logger (automatic and manual)
- Customizable data storage - 2900 data points
- Minimum, Maximum and Average values
- Multi-Function 3-line display
- Humidity sensor can be recalibrated in the field with our Relative Humidity Calibration Kit.
- Exterior temperature, humidity, and pressure sensors for fast and accurate readings
- Customize screens to display user-selected measurements
- Graph and recall trends
- User-replaceable impeller
- Flip-top impeller cover allows use of other functions while protecting the impeller
- Data charting
- Upload to a PC or Macintosh computer (with optional interface)
- Five languages (English, French, Spanish, German, and Italian)
- Uses 2 AAA batteries (included); average runtime 400 hours depending on use of backlight
- Batteries can be easily replaced in the field
- 5-year warranty
- Assembled in the USA
Kestrel 4500 NV HORUS ATrag Includes:
- Soft carry pouch
- Neck lanyard
- Batteries - 2 AAA
- Kestrel Certificate of Conformity
- Dimensions – 5.0 x 1.8 x 1.1 in (12.7 x 4.5 x 2.8cm)
- Weight – 3.6 oz. (102g)
Downloads for More Details:
Instruction Manual for Kestrel® Pocket Weather® Tracker with Horus® ATRAG™ Ballistic Calculator.
Pair the 4500 NV with HORUS Wind Meter with the Kestrel Vane Mount and Mini Tripod for a portable data-logging weather station that sets up in seconds and rotates in the slightest of breezes. The Kestrel and Vane Mount kit packs down into a 2 x 6 inch pouch and weighs less than 8 oz. for the ultimate in portability.
Available in Olive Drab or Desert Tan