Free Download | HKGunLoader Kestrel Horus Gun File Software (access to Horus' library of nearly 1000 guns and loads) for use with Kestrel 4500NV Horus Meters

Kestrel Pocket Weather Meters and Horus Vision have partnered to provide a powerful shooting tool that 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 ballistics software. Now, the Kestrel Ballistics Weather Tracker with Horus ATrag Software 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.

The new unit allows users to load and customize multiple guns and rounds from the extensive proprietary Horus database. Simple, intuitive screens allow the user to create up to six 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.

Crosswind strongly influences the accuracy of sharp shooting, becoming the largest error component at long ranges. Even medium crosswind velocities (~5 m/s) along the flight path of a bullet can cause 1-meter deviations at 500 meters. The Kestrel 4500 automatically calculates the crosswind, as well as measures the other environmental factors that play into ballistics performance - temperature, humidity and density altitude. Simply plug the Kestrel's weather data into any ballistics software to calculate accurate windage adjustments. It's no wonder the Kestrel is consistently on the military sniper's "most wanted" list of desired equipment.

Military personnel and pilots flying in darkness are often concerned with preserving their night vision. Due to overwhelming demand from our military customers, the Kesrel NV line was added in 2005.

The Kestrel 4500NV is available with an Olive Drab case or a Desert Tan case. The unit has a night-vision preserving backlight which helps users to sustain natural night vision. The NV's backlight incorporates an optical filter to reduce overall brightness and minimize blue and green spectrum light to preserve night vision. Additionally, NV backlights are also much dimmer than a standard backlight, making it more difficult to detect with the naked eye in night operations. This backlight appears soft greyish pink, not red, and is still in the visible spectrum, so is not compatible with night-vision equipment.

It takes 30 to 45 minutes for the average eye to adapt to darkness and maximize night vision. 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 out, preventing night blindness and night vision fatigue.

How does the Kestrel 4500's crosswind calculator work?
The 4500 features a built-in digital compass that allows you to measure the wind speed and direction.

In order to display the crosswind, simply point the Kestrel down the runway or target and set the
reference heading. Then hold the 4500 into the wind and it automatically calculates the crosswind with respect to the reference heading. It also calculates the headwind/tailwind the same way (headwinds are positive values and tailwinds are negative).

What's so great about the Kestrel impeller?
The Kestrel impeller measures 1 inch across, and turns on a Swiss precision pivot mounted on sapphire bearings. Its large size ensures accurate readings even if pointed off-angle from the wind, and its very low start-up speed allows measurement of the lightest puffs of wind. If damaged, a new calibrated impeller can be purchased for $19 and popped in without tools, restoring like-new performance.

Can the Kestrel 4000 communicate directly with a PDA or computer?
No. Due to the rapidly changing standards for product communication, data upload is presently limited to a USB or serial interface to communicate with a PC. Additional communication options may be developed in the future as a predominant standard emerges among Kestrel users.

What's that curly looking thing?
That's the patented Kestrel temperature sensor. Unlike most watches and other products with
temperature measurement, the Kestrel sensor is outside the case to ensure it measures the air, not your hand or pocket. The "curls" serve to further isolate the temperature sensor from the effects of the case temperature.

How does the Kestrel measure humidity so accurately?
The Kestrel features a patented dual temperature sensor configuration for rapid response and accurate measurement. Every Kestrel is calibrated against NIST-traceable standards, and can be recalibrated in the field with the Kestrel RH kit.

How does the Kestrel measure altitude?
The Kestrel uses an atmospheric pressure sensor and calculates altitude based on a standard
atmosphere. This is just like the altimeter in an airplane, or an altimeter watch. It's more accurate than a GPS altimeter, but does require periodic reset of the reference pressure to eliminate weather effects.

How does the altimeter work? Is the reference pressure the same as an altimeter setting?
The Kestrel models with altimeter calculate altitude from barometric pressure in exactly the same
manner and according to the same rules as an aircraft altimeter. The "reference pressure" on the
Altitude screen is the same as the altimeter setting obtained from a local airfield.

Can the Kestrel provide location?
Currently we do not offer a Kestrel with GPS. We may add basic GPS location to a future Kestrel model, but we'll leave the full-blown mapping and navigation to the companies that specialize in GPS as much as we specialize in weather.

Do you really mean MADE in the USA?
Yes. The entire Kestrel line is designed and built in the USA. Some electronic components have to be sourced overseas these days, but we buy American wherever we can.

Who do I call if I have a problem?
You can call Nielsen-Kellerman direct! Weather it's their Customer Service Representatives to the President of the company, they all answer the phone and know their products inside and out. If you have a problem, they'll fix it. Kestrels hardly ever break, but if they do, they're covered by a 5-year warranty.

If you are unsure of the model for you, please try our Interactive Kestrel Meter Selector Here

(1) Kestrel Rotating Vane Mount - 0791
(1) Kestrel Replacement Impeller

Free Download | HKGunLoader Kestrel Horus Gun File Software (access to Horus' library of nearly 1000 guns and loads) for use with Kestrel 4500NV Horus Meters

Our Kestrel Horus Meters include the latest Issue 4.61. software. Kestrel Horus Meters with Issue 4.61 are upgradeable while earlier Issue 3.xx versions are not. If future upgrades are made available, the unit would need to be returned as the upgrade is performed at the manufacturer.

New! This Kestrel Includes Bluetooth Wireless Technology!
Kestrel's reputation for accuracy and reliability has been earned over thirteen years of proven performance in extreme environments. In many instances, the key environmental measurements from a Kestrel instrument are input into other systems ballistics calculators, fire behavior models, hazmat plume predictors, heat stress models, weather reports, research data sets and more. Now, both real-time and logged data can be transferred wirelessly and automatically to a laptop or PDA, making a Kestrel 4000 series weather meter the perfect tool for virtually any job that requires quick and truly accurate environmental data.

Available in the NV Configuration

Crosswind strongly influences the accuracy of sharp shooting, becoming the largest error component at long ranges. Even medium crosswind velocities (~5 m/s) along the flight path of a bullet can cause 1-meter deviations at 500 meters. The Kestrel 4500 automatically calculates the crosswind, as well as measures the other environmental factors that play into ballistics performance - temperature, humidity and density altitude. Simply plug the Kestrel's weather data into any ballistics software to calculate accurate windage adjustments. It's no wonder the Kestrel is consistently on the military sniper's "most wanted" list of desired equipment.

Military personnel and pilots flying in darkness are often concerned with preserving their night vision. Due to overwhelming demand from our military customers, the Kesrel NV line was added in 2005.

The Kestrel 4500NV is available with an Olive Drab case or a Desert Tan case. The unit has a night-vision preserving backlight which helps users to sustain natural night vision. The NV's backlight incorporates an optical filter to reduce overall brightness and minimize blue and green spectrum light to preserve night vision. Additionally, NV backlights are also much dimmer than a standard backlight, making it more difficult to detect with the naked eye in night operations. This backlight appears soft greyish pink, not red, and is still in the visible spectrum, so is not compatible with night-vision equipment.

It takes 30 to 45 minutes for the average eye to adapt to darkness and maximize night vision. 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 out, preventing night blindness and night vision fatigue.

How does the Kestrel 4500's crosswind calculator work?
The 4500 features a built-in digital compass that allows you to measure the wind speed and direction.

In order to display the crosswind, simply point the Kestrel down the runway or target and set the
reference heading. Then hold the 4500 into the wind and it automatically calculates the crosswind with respect to the reference heading. It also calculates the headwind/tailwind the same way (headwinds are positive values and tailwinds are negative).

What's so great about the Kestrel impeller?
The Kestrel impeller measures 1 inch across, and turns on a Swiss precision pivot mounted on sapphire bearings. Its large size ensures accurate readings even if pointed off-angle from the wind, and its very low start-up speed allows measurement of the lightest puffs of wind. If damaged, a new calibrated impeller can be purchased for $19 and popped in without tools, restoring like-new performance.

That's the patented Kestrel temperature sensor. Unlike most watches and other products with
temperature measurement, the Kestrel sensor is outside the case to ensure it measures the air, not your hand or pocket. The "curls" serve to further isolate the temperature sensor from the effects of the case temperature.

How does the Kestrel measure humidity so accurately?
The Kestrel features a patented dual temperature sensor configuration for rapid response and accurate measurement. Every Kestrel is calibrated against NIST-traceable standards, and can be recalibrated in the field with the Kestrel RH kit.

How does the Kestrel measure altitude?
The Kestrel uses an atmospheric pressure sensor and calculates altitude based on a standard
atmosphere. This is just like the altimeter in an airplane, or an altimeter watch. It's more accurate than a GPS altimeter, but does require periodic reset of the reference pressure to eliminate weather effects.

How does the altimeter work? Is the reference pressure the same as an altimeter setting?
The Kestrel models with altimeter calculate altitude from barometric pressure in exactly the same
manner and according to the same rules as an aircraft altimeter. The "reference pressure" on the
Altitude screen is the same as the altimeter setting obtained from a local airfield.

Can the Kestrel provide location?
Currently we do not offer a Kestrel with GPS. We may add basic GPS location to a future Kestrel model, but we'll leave the full-blown mapping and navigation to the companies that specialize in GPS as much as we specialize in weather.

Do you really mean MADE in the USA?
Yes. The entire Kestrel line is designed and built in the USA. Some electronic components have to be sourced overseas these days, but we buy American wherever we can.

Who do I call if I have a problem?
You can call Nielsen-Kellerman direct! Weather it's their Customer Service Representatives to the President of the company, they all answer the phone and know their products inside and out. If you have a problem, they'll fix it. Kestrels hardly ever break, but if they do, they're covered by a 5-year warranty.

If you are unsure of the model for you, please try our Interactive Kestrel Meter Selector Here

Pair the 4500 Wind Meter with the Kestrel Vane Mount and you have a data-logging weather station that sets up in seconds and rotates in the slightest of breezes. Did we mention that the whole kit is the ultimate in portability? It packs down into a 2 x 6 inch pouch and weighs under 8 ounces.

Available in the NV Configuration

Military personnel and pilots flying in darkness are often concerned with preserving their night vision. Due to overwhelming demand from our military customers, the Kesrel NV line was added in 2005.

The Kestrel 4500NV is available with an Olive Drab case or a Desert Tan case. The unit has a night-vision preserving backlight which helps users to sustain natural night vision. The NV's backlight incorporates an optical filter to reduce overall brightness and minimize blue and green spectrum light to preserve night vision. Additionally, NV backlights are also much dimmer than a standard backlight, making it more difficult to detect with the naked eye in night operations. This backlight appears soft greyish pink, not red, and is still in the visible spectrum, so is not compatible with night-vision equipment.

It takes 30 to 45 minutes for the average eye to adapt to darkness and maximize night vision. 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 out, preventing night blindness and night vision fatigue. Manufactured in the USA!

If you are unsure of the model for you, please try our Interactive Kestrel Meter Selector Here

You asked for it - We listened! This AllKestrel.com Kestrel 4500 Meter bundle deal is all you will need to take accurate wind and weather measurements in one very compact package. As a matter of fact, this Kestrel 4500 bundle kit will fit in one of our smallest shipping boxes (7 x 7 x 6) with room to spare.

Pair the 4500 Wind Meter with the Kestrel Vane Mount and you have a data-logging weather station that sets up in seconds and rotates in the slightest of breezes. Did we mention that the whole kit is the ultimate in portability? It packs down into a 2 x 6 inch pouch and weighs under 8 ounces.

Available in the NV Configuration

Military personnel and pilots flying in darkness are often concerned with preserving their night vision. Due to overwhelming demand from our military customers, the Kesrel NV line was added in 2005.

The Kestrel 4000NV is available with an Olive Drab case or a Desert Tan case. The unit has a night-vision preserving backlight which helps users to sustain natural night vision. The NV's backlight incorporates an optical filter to reduce overall brightness and minimize blue and green spectrum light to preserve night vision. Additionally, NV backlights are also much dimmer than a standard backlight, making it more difficult to detect with the naked eye in night operations. This backlight appears soft greyish pink, not red, and is still in the visible spectrum, so is not compatible with night-vision equipment.

It takes 30 to 45 minutes for the average eye to adapt to darkness and maximize night vision. 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 out, preventing night blindness and night vision fatigue. Manufactured in the USA!

Article: 4500 & Agricultural Spraying (PDF)

If you are unsure of the model for you, please try our Interactive Kestrel Meter Selector Here

Kestrel Pocket Weather Meters and Horus Vision have partnered to provide a powerful shooting tool that 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 ballistics software. Now, the Kestrel Ballistics Weather Tracker with Horus ATrag Software 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. The new unit allows users to load and customize multiple guns and rounds from the extensive proprietary Horus database. Simple, intuitive screens allow the user to create up to six 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.

Free Download | HKGunLoader Kestrel Horus Gun File Software (access to Horus' library of nearly 1000 guns and loads) for use with Kestrel 4500NV Horus Meters

If you are unsure of the model for you, please try our Interactive Kestrel Meter Selector Here

This impeller fits every Kestrel Meter.

Kestrel 1000, Kestrel 2000, Kestrel 2500, Kestrel 2500NV, Kestrel 3000, Kestrel 3500, Kestrel 3500NV, Kestrel 3500DT, Kestrel 4000, Kestrel 4200, Kestrel 4250, Kestrel 4300, Kestrel 4500, Kestrel 4500NV, Kestrel 4500NV Horus as well as all Kestrel Bluetooth models

If you are unsure of the model for you, please try our Interactive Kestrel Meter Selector Here

• Windshield, Dashboard, and Console Mount
• Adjustable Holder fits 4000 / 4200 / 4300 and 4500 Meters
• Easy to install
• Alcohol Wipe Included
  
• No tools required