JOI 2025

SONAR TECHNOLOGY EXPLAINED! SWITCHFIRE THE BASICS: Fishfinders send high-precision ultrasonic pulses into the water. Objects under water (fish, structures, algae, bottom) reflect these back to the transducer and then to the device, which displays these echoes. FREQUENCIES: The higher the kHz frequency, the more details become visible. Low frequencies are perfect for illuminating deep waters. DUAL SPECTRUM CHIRP CHIRP SONAR CHIRP stands for "Compressed High Intensity Radar Pulse". How can you ima- gine this function? CHIRP scans the water for fish in a similar way to how a car radio automatically searches for transmitting stations. Conventional transducers transmit single sonar pulses to create a sonar image, CHIRP continuously transmits different sonar frequencies from low to high. Humminbird CHIRP offers a broadband capability of up to 28kHz - 540kHz. It unlocks your transducer and utilizes its full chirp capacity and uses its widest possible frequency range when scanning. We put the full spectrum at your feet. With this wide coverage, CHIRP produces a more accurate and detailed view of fish, structure and bottoms. Traditional sonar transducers leave you waiting in line, wasting valuable time with each sonar pulse. Humminbird CHIRP transducers send more pulses in a given period, reducing processing time because more pulses means more information and greater echo separation. SwitchFire allows you to customize your screen to your fishing con- ditions with two unique display modes - Clear mode and Max- mode. Decide how many details you want to see, such as fish, structure, thermoclines or water currents. Don't be fooled by the pretty pictures, because the real hero is our LowQ CHIRP transducer with short pulse intervals! It uses more coverage to detect fish, scan the bottom and its structures. This workhorse is responsible for the sharp fish crescents and clear object separation, even just above the bottom, so the fish is clearly visible separated from its surroundings. Dual Spectrum Chirp is the best in its class and is standard on the majority of current HUMMINBIRD fishfinders. Refine the view with the narrow cone, it makes a big difference, especially to recognize small fish and fish that are close to the bottom or structures, to recognize them separately. Mostly larger predatory fish can be identified as long, sharply defined fish crescents so that you can react immediately with your bait presentation. 42° 140-200 kHz 25° 180-240 kHz WIDE SENSE CONE - Maximum coverage SCHMALER SENDEKEGEL - Maximum details Use this mode to scan large areas or when observing your bait presentation during vertical jigging. Use it to find deeper areas, structures, vegetation and fish. 35 SONAR TECHNOLOGY