Instruction Manual For: Kestrel® Pocket Weather® Tracker with Horus® ATRAG™ Ballistic Calculator www.kestrelweather.com 800.784.
BASIC NAVIGATION Press and hold for 2 seconds will power down the Kestrel reguardless of current screen. Press twice in rapid succession to instantly change between Weather mode and Horus mode. The Kestrel has seven navigation keys: Up-Arrow Capture Backlight Any changes in information are automatically saved upon exiting the current screen.
. Environment • Press to enter Gun Selection Screen. Here, you may choose a preconfigured gun or build your own. ENVIRONMENT Auto No Lat 42˚F Temp 75˚F SP RH Dalt Coriol Wdir 29.48inHg 50% 1729ft Yes Onetgt These three main data groups determine an accurate firing solution. The first step in getting a firing solution is selecting your gun. To Choose a Preconfigured Gun: • Press or to scroll through the different guns. • Press to turn your selected gun “on” or “off”.
• To name your gun, scroll up to highlight “Gun” and press . GUN MV New Gun 2900fps BC 0.533 BW 190gr BD 0.308in • You will see a cursor appear under the first letter of New Gun. Use the and buttons to scroll through the alphabet and numbers 0-9 and several symbols. Pressing inserts a space between characters. You can choose between upper and lowercase letters. • Once you’re on the desired letter, use to move the cursor to the next space in the gun name. Continue until the gun name is complete.
GUN MV Laru308 •1360fps GUN MV •1103fps BC 0.470 BC 0.470 BW 175gr BW 175gr BD 0.308in BD 0.308in Figure 1 • Press while “New entry” is highlighted to enter the Table Item screen. Laru308 • Use and Figure 2 • To access MV-Temp table, scroll to MV (Muzzle Velocity) to highlight it and press , then use to scroll to MV-Temp and press to enter. Muzzle velocity MV feet per sec MV-Temp 2900fps to scroll to “Temp” and “MV”.
• Use up and down to highlight a parameter. 0.533 BC • Use BC-Dist • Use and to scroll to any existing parameters. Use and to adjust each value. • To add a new entry, highlight “New Entry” and press . • Use and and to scroll to “Dist” and “BC”. Use to adjust each value. • To clear a Table Item, scroll down to Clear and press . • Press to exit to return to the Gun Information screen. Table item Dist BC 0m 0 and to adjust values for each parameter.
Elevation • Use and to adjust values for each parameter. • When all parameters are set, press E 49.24 W 1.36/3.03 E 16.58 W 0.68/1.46 R 000° 100 m 3oc 5mph Tgt Wind Tgt Wind R 000° 549 m 3oc 5mph Wind Direction & Wind Speed There are two wind speed measurements on the target screen (WS1 and WS2) for minimum and maximum wind speed as well as wind direction (WD).
• The data collected in capture mode will automatically adjust the “WD”, “WS1”, and “WS2” values in the Target screen. *Note: WS1 can never be greater than WS2 value. The WS2 value will automatically adjust to ensure that this remains true. Direction of Fire Direction of Fire (DoF) is an absolute frame of reference to true north. The value is the direction the gun barrel is pointng with respect to the values on a compass.
* For information on “True Drop”, please see page 19. ENVIRONMENT SCREEN: The Environment screen contains all atmospheric parameters such as temperature, station pressure, and relative humidity. Setting the “Auto” parameter to “Yes” automatically imports the Kestrel’s sensor data into the Environment screen.
Note: The Range Card will display range values up to 4000 yards, or the closest equivalent in meters, depending on the range increment. Remaining Velocity • A small dot will appear to the left of the muzzle velocity value to indicate the bullet is in the transonic range. • A larger dot will appear to the left of the muzzle velocity value to indicate the bullet is in the subsonic range.
• The Tgt heading will change to to indicate the setting mode. • The direction will be continuously updated on the target line. • Pressing the button again will capture the current direction as DoF. • The Tgt heading will return to its normal state. Note: If the compass is not calibrated, a new screen will pop up to aleart you that capture won't work until compass is calibrated. Wind Speed Quick Key • Pressing the button while Wind is highlighted will enter the Wind setting mode.
BALLISTIC & ENVIRONMENTAL QUICK REFERENCE Target Screen Active – tells whether this target is currently active TR – target range DoF – direction of fire (relative to true north) Ideg – inclination angle (negative means the target is below the shooter) Icos – inclination cosine (cosine of the inclination angle) TS – target speed TD – target direction of movement WD – current wind direction (direction from which wind is blowing, relative to DoF) WS1 – typical current wind speed WS2 – maximum current win
RemV – remaining velocity RemE – remaining energy ToF – time of flight MaxO – maximum ordinate (highest point the bullet reaches in flight) Drop – total drop distance Rtrns – range at which transonic velocity transition begins Rt 75% – distance at which a bullet is 75% through the transonic range Rsubs – range at which bullet velocity becomes subsonic Range – the range at which test firing is being done Drop – the elevation correction calculated for the specified range BC – the ballistic
Target Gun RANGE CARD A Rng Elev Wnd1 Wnd2 Lead RemV RemE ToF MaxO 100 0.06 0.10 0.21 0.00 2355 2155 0.134 0.87 200 2.28 0.22 0.47 0.00 2169 1828 0.279 3.79 300 5.56 0.34 0.72 0.00 1991 1541 0.437 9.27 400 9.49 0.47 0.99 0.00 1823 1291 0.609 18.00 500 14.
Instruction Manual For: Kestrel Pocket Weather Tracker with Horus ATRAG Ballistic Calculator: Instruction Manual v.2047 Kestrel® Pocket Weather® Meters are designed and manufactured in the USA by: NIELSEN-KELLERMAN 21 Creek Circle, Boothwyn, PA 19061 Phone: (610) 447-1555 Fax: (610) 447-1577 Web: www.kestrelweather.com Email: kestrel@nkhome.com Please register your Kestrel Meter at www.kestrelweather.
