Depth Sounder Q&A
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Staff Thanks to technical industry jargon and the alphabet soup of acronyms that electronic gadgetry generates, marine electronics can be intimidating to learn. For those not extremely familiar with the workings of today's high-tech depth sounder, we offer this tutorial.
Laptop Battery What is the difference between a CRT and an LCD video depth sounder?
According to the indictment, Jones would steal various IBM and Penguin computer servers from Verisign's warehouse in Virginia and sell them to Johnson. Johnson would then sell the servers to several individuals, who would sometimes place them for sale on eBay. As a result of this scheme, the indictment alleges that Jones and Johnson caused Verisign to lose more than $120, 000 worth of computer equipment. In the indictment, Jones and Johnson are charged in three counts with causing the interstate transportation of stolen property, namely IBM 330 and 335 servers, in violation of 18 U.S.C.
Thinkpad A CRT (cathode-ray tube) depth sounder uses a high-resolution TV-style screen for very clear, well-defined images. An LCD (liquid-crystal display) uses a flat display which is weather-resistant, provides better visibility in sunlight and consumes less power. However, it does not normally offer as high a display quality (resolution) as a CRT.
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Microsoft What does resolution mean in a fish finder?
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Laptop Computers Resolution is the number of pixels (dots) the screen can display in a square inch and speaks to the unit's ability to distinguish closely grouped targets from each other. High-resolution displays can represent a group of bait fish, while a low-resolution screen might present that school of bait as a single large fish.
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Laptop Computer What is the difference between amber and color CRT video sounders?
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Desktop Computer A CRT video sounder has a very clear, well-defined picture; however, it does not display very well in direct sunlight. An amber CRT sounder is not as pretty but is easier to see in sunlight than a color sounder.
Notebooks What does the term "A-Scope" mean?
Lenovo Most sounders take time to receive, translate and display the information on the screen. This means that in many cases the information on the screen is old. A-scope provides a small sliver of current information of what is under the transducer at that instant.
Hard Drive What is scanning sonar?
Travelstar There are many different types of scanning sonar that present a visual picture of the bottom floor all around the boat. Mechanical scanners have a transducer that moves and rotates to see all around the boat. These are usually very costly. A phased-array scanning sonar works similarly but with no physical movement. Phased array uses a special transducer which electronically "steers" its sound beams.
Gateway What frequency do I need?
Laptop Parts The answer to this question depends on your fishing habits. A 200-kHz signal provides exceptional resolution but does not cover a large enough area in shallow water and does not penetrate and return echoes in deep water. A 50-kHz signal is wide angle and penetrates deeply but carries a substantial compromise in resolution and sensitivity. If neither of these signals is a perfect match, either choose a dual-frequency machine or consider special-ordering a 120-kHz transducer, which offers a good compromise of wide angle and deep penetration.
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Hard Drives Editor's Note: Information provided by Skipper Marine Electronics, the world's largest marine electronics dealer. For more information or for a copy of this year's catalog, call 800-754-7737 or 847-566-1800.
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