CHIRP is an acronym for Compressed High-Intensity Radiated Pulse. This technology differs significantly from old-school sonar technology, which relies on one, two or perhaps three frequencies being directed into the water column.

CHIRP technology sends a wide range of frequencies — or pulses of energy — into the water, and it sends them at a faster rate than traditional sonar units. Variety is key.

Low-frequency pulses can penetrate deeper. High-frequency pulses generally can deliver more defined images. When you transmit a range of frequencies and you’re transmitting them faster, you’re collecting more information for the processor — which can then deliver better-illustrated and sharper images to your screen.

That means distinguishing between bait fish and keepers, and a clearer view of everything beneath and around your hull with CHIRP-equipped sonar devices as well as out on the surface with CHIRP-equipped radar units.

High frequencies have a narrower sonar cone, great for detail and separating fish from the sea bottom.

Lower frequencies have wider sonar cones, great for trolling.