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Sports Radar

Testing System

Stadium and
Scoreboard Radar
> Pro II Speed Sensor

LED Displays
> 3-1/2 Digit LED
> 2-1/2 Digit LED

LED Systems
> Pro IIs Package
> Pro II+ Package
> Pro II Package
> Sport 2 Package
> Solo 2 Package

Legacy Sport Radar Gun Accessories
> Accessories

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Stalker Pro IIs
Introducing the Stalker Pro lls!

Stalker engineers have delivered what the other sport radars can’t - Spin Rate from a hand-held sport radar gun.

One of the most important pitch analytics, Spin Rate is now provided along with Peak and Across-the-Plate velocity, all in a single window. No delay, no estimations, simple measurements.

Another game changer from Stalker.

Stalker Pro IIs gun and hard travel case
Includes Stalker Pro IIs, one Li-Ion battery handle, hard travel case, inline battery charger, and Quick Start Guide

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LED Speed Sign Systems Includes Stalker Pro IIs, LED Speed Sign with Wireless module, Standard tripod, tripod mount, one Li-Ion battery handle, hard travel case, inline battery charger, and Quick Start Guide

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2 1/2 Digit Wireless

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3 1/2 Digit Wireless


Spin Rate.

Consistent Accuracy and Range

As the unrivaled leader in sports radar technology, Stalker Sport is
the gold standard for consistent accuracy, superior range, and now spin rate.

The performance and durability of the Stalker Pro IIs comes through in all conditions, pitch after pitch, game after game.






Wireless Connectivity

Own the data you capture.

Aside from the power of spin rate in a hand-held radar gun, the Pro IIs also transmits data wirelessly in a non-proprietary data stream.

Stream velocity and spin rate to scoreboards, speed signs, mobile applications, and your own proprietary programs.


Measuring Ball Spin

Measuring a baseball’s spin rate is more challenging than measuring its speed. Speed measurement is nearly instantaneous, whereas measuring ball rotation requires tracking the majority of the ball’s flight, followed by a complex calculation determining ball spin.

Occasionally the measurement angle, obstructions (net, fence, batter, etc.) or gun movement can interfere with a perfect view, resulting in a missed reading. A slight shift in position usually clears this up. Consult your owner’s manual for other tips and guidelines.



Hand-held spin rate technology is a Patent Pending property of Applied Concepts, Inc. / Stalker Radar

Stalker Pro IIs Specifications:

Speed Range 1 - 150 MPH
Accuracy  +/- 3% of reading

Maximum Clocking Distance

Baseball Velocity - 500 feet of unobstructed views
Spin rate capture up to 150 feet

Transmit Time: Roughly 5 hours per charge
Units of Measure MPH, km/h
Resolution Tenths and ones - user selectable
Radar Beam 12 degree
Acquisition Time 10 ms
Transmitter Power 10 mW
Communication RS-232 communication with RS-485
available on special order, 1200 to 38.4K baud
Ingress Protection IP67 dust and water proof