Beltronics BEL975R Owners Manual - Page 7

• Ka Narrow 34.3 - second red Signal Strength LED • Ka Narrow 34.7 - third red Signal Strength LED • Ka Narrow 35.5 - fourth red Signal Strength LED 4. Full illumination of the LED confirms feature is ON. Flashing of the LED confirms feature is OFF. Use the AUD button to make your selection. 5. Press the PWR button to retain your new settings for Selectable Features. Two "beeps" will confirm that you have exited from Selectable Features. Your unit will be ON and ready for operation. Understanding Radar, Laser and SWS Three Radar Frequencies Three microwave frequencies have been allocated by the FCC (Federal Communications Commission) and are used for traffic Radar. They are: X band: 10.45-10.60 GHz K band: 24.050-24.250 GHz Super Wideband Ka: 33.4-36.0 GHz Both X and K bands are well known to motorists who have traveled with Radar detectors. Introduced first was X band Radar which became common during the 1960s. In the mid 1970s, the lower powered, more difficult to detect K band Radar was introduced. In 1987, FCC approval was given for use of Radar equipment using a third frequency, Ka. In response to this, BELTRONICS introduced the first Radar detectors capable of detecting X, K and Ka band signals. In late 1990, FCC approval was given to Wideband Ka: 34.2 GHz to 35.2 GHz. Once again, BEL responded with Wideband Ka detection. Today, your 975R can detect Super Wideband Ka. To turn this on, see selectable options section. 12 Safety Warning System (SWS) - What is it? The Radio Association Defending Airwave Rights, Inc. (R.A.D.A.R) conceived and developed the Safety Warning System. The concept behind this system is to warn motorists of potential road hazards by employing Safety Warning System transmitting devices in areas such as construction zones, accident sites and detours. Because these SWS transmitters operate within the 24 GHz portion of the K band frequency, their signals are detected by your unit. Interpretation of Alerts Radar Alerts The alerts provided by your unit are affected both by the type of transmission (continuous wave or instanton) and the position of the Radar source. Generally, when you drive closer to a Radar source the intensity of the received signals increases, resulting in a greater number of LEDs illuminating in the four-LED display (l or r) and a corresponding increase in the audio alert rate. Described on the following pages are five common types of Radar encounters and the alerts you will typically receive. 1. Stationary or moving Radar, straight ahead aimed in your direction. 13