CPT-S Bronze Conical HIGH CHIRP Through Hull 20° Angled Element Transducer - E70341

CPT-S Bronze Conical HIGH CHIRP Through Hull 20° Angled Element Transducer - E70341

CPT-S Bronze Conical HIGH CHIRP Through Hull 20° Angled Element Transducer - E70341

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Raymarine CPT-S Bronze Conical High Chirp Through Hull 20° Angled Element Transducer - E70341
Raymarine E70341
The CPT-S increases your chances of getting a return echo in deep water or in bad water conditions. It also allows you to see better detail, such as bait and structure. In general, the more power you have, the deeper you can get and the easier it is to separate the returning echoes from the fish and the lower structure of all the other noises detected by the transducer. Compatible with the Axiom RV, Axiom Pro S, and Axiom Pro RVX with the addition of an A80490 adapter cable. If you are connecting to an MFD that has a CP100 sonar module, installation is plug and play without the need of any additional adapters.


Installation: Through Hull
Material: Urethane
Max Depth (Ft): 900
Frequency (KHz): CHIRP Fishfinder
Beam Width (L/H): 25°
Records: Depth
Supported Deadrise / Transom Angles: 15-25°


The precision with which the fishfinder detects the background and other objects is also determined by the frequency selected for the depth you are looking at. The CPT-S can be tuned to two different frequencies: 200 kHz (high) or 50 kHz (low).

200 kHz (high)

Raymarine 200khz_example A80447

200 kHz works best in water at less than 200 feet / 60 meters and when you need to get an accurate reading while moving at a higher speed. High frequencies give you more detail to detect very small objects but in a smaller portion of water. High frequencies typically show less noise and less unwanted echoes while showing better target definition.

50 kHz (low)

Raymarine 50khz_example A80447

For deep water, 50 kHz is preferred. This is because water absorbs sound waves at a slower rate for low frequencies and the signal can travel farther before it becomes too weak to use. The beam angle is wider at low frequencies, which means that the output pulse extends further and is more suitable to see a larger area under the boat. However, this also means less definition and separation of the target and a greater susceptibility to noise. Although lower frequencies can see deeper, they may not give you a clear idea of ​​the bottom.

Raymarine cone_angles A80447

Mud, soft sand and plant life in the bottom absorb and disperse sound waves, which results in a thicker bottom image. Rock, coral and hard sand reflect the signal easily and produce a thinner lower screen. This is easier to see using the 50 kHz configuration, where the lower throughputs are wider.

Raymarine beam_patterns A80447

An empirical rule would be to use the 200 kHz configuration for a detailed view at about 200 feet and then change to 50 kHz when you want to look deeper. Better yet, show both views side by side on a split screen for both perspectives.

Raymarine Transducer