Speed Guns FAQ

Can speed radar guns read the speed of an object moving in any direction?

No, Doppler radar can only read the relative speed of targets moving either to or from the radar.

Can the Bushnell Speedster track arrow speed?

No

Can the Bushnell Speedster track club head speed?

No

Does angle effect accuracy?

A 12-degree angle should not effect performance. The Speedster can achieve +/- 1-MPH speed accuracy to a baseball at 75 feet away at a 12-degree angle or less. A 20-degree angle at 60 feet away would result in +/- 3-MPH accuracy. 

How accurate is the Bushnell Speedster?

The Bushnell Speedster provides +/- one-MPH speed accuracy.

How does rain / snow effect the performance?

The Bushnell Speedster is water resistant and performs +/- one MPH accuracy in rain and snow. Weather does not effect accuracy and it is self-calibrating. 

How does the Speedster work?

Once the trigger is engaged, the Speedster transmits radio frequency energy in the form of waves. The radar transmits 24 billion RF cycles of energy per second at the speed of light, which is 186,000 miles per second. The Speedster measures the difference between transmit and receive signals and relays this information to the DSP to quickly calculate +/- one MPH speed accuracy. 

How does the user need to be positioned in relation to the moving object?

The Bushnell Speedster works best when positioned in front of or behind the moving object.

How is speed calculated?

Speed is the difference between the transmit frequency and receiver frequency (also known as the "Doppler" shift). 

If in a moving vehicle, can the Bushnell Speedster pick up the speed of another moving object?

No. However, if you would like to know the speed of the vehicle you are in, point the Speedster at a stationary object, such as the ground.

What is radar?

Radar is an acronym for "Radio Detection And Ranging".

What is the battery life of the Bushnell Speedster?

Approximately ten 9-inning baseball games. 

What is the Bushnell Speedster used for?

The Bushnell Speedster can be used to accurately measure and display speeds of many of your favorite sports. It can track speeds of baseballs, softballs, tennis balls, and can be used in ice-skating, auto-racing, horse-racing, track, and other sports where speed is crucial to success.

What is the distance that the speed of a baseball, softball or tennis ball can be read?

0-75 feet away.

What is the distance that the speed of a car can be read?

0-1300 feet away.

What is unique about the Speedster compared to other radar guns?

The Speedster uses advanced Digital Signal Processing (DSP) software to filter out bad information, providing valid accurate information. In addition, the Speedster is capable of tracking baseball statistics. 

What kind of temperature ranges can the Bushnell Speedster be subjected to?

-5 degrees C to 70 degrees C. 

What technology does the Speedster consist of?

The Bushnell Speedster contains a K-Band microwave RF (Radio Frequency) transmitter whose signal gets reflected by the target object. The reflected signal will have a "Doppler Shift" proportional to the target speed. This Doppler frequency shift is detected in the receiver, amplified, filtered, and then digitized in an Analog to Digital Converter (ADC), and passed onto the Digital Signal Processing (DSP) chip. Using complex algorithms, the DSP chip filters out false and low level return signals, to identify and display the speed of the desired target. The speed along with various statistics and averages are then displayed on the LCD display. 

What type of battery does the Bushnell Speedster use?

Six AA's. We recommend using good quality AA alkaline batteries.