36 AQUAMAP™ 10x2/12x2 SERIESTraditional 50/77/200 kHz SonarFishfinder uses ultrasonic signals to detect the bottom of the ocean.Traditional 50/77/200 kHz sonar sends only one frequency at a time.Since the only feedback is from this one single frequency, there is limitedinformation to work with, restricting the clarity and resolution. Lowerfrequencies with wider sonar beam angle would result in a broader anddeeper detectable area. Conversely, higher frequencies with narrower beamangle would result in higher resolution images with better target separation.CHIRP SonarCHIRP sonar is one of the most sophisticated sonar technologies availablefor the fishing and boating public. The word is an acronym for CompressedHigh-Intensity Radiated Pulse (C-H-I-R-P). CHIRP sonar provides amazinglyclear target separation and definition because it puts more energy onto thetarget than traditional sonars.Instead of sending just one single frequency, CHIRP sonar sends acontinuous sweep of frequencies ranging from low to high. Garmin CHIRPsonar technology then interprets each frequency individually upon its return.This provides much more information, from which CHIRP sonar is ableto construct a much clearer, higher resolution image with greater targetseparation and crisper fish arches.For example, 80-160 kHz sonar sweeps through the entire range from 80 kHzall the way up to 160 kHz, hitting every single frequency in between.Garmin ClearVü Sonar ViewNOTE: To receive Garmin ClearVü scanning sonar, you need a compatibletransducer.Garmin ClearVü high-frequency sonar provides a detailed picture of thefishing environment around the boat in a detailed representation of structuresthe boat is passing over.
