How to choose a Lowrance Fish Finder

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When shopping online for allowance maritime electronics, such as a Lowrance fish finder, it helps a lot to understand a bit about the technology you are shopping for. Here is a quick explanation of some of the terms you will encounter.

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================================================================== New High Quality Garmin Fishfinder 90 Dual Beam w/TM New High Quality Garmin Fishfinder 90 Dual Beam w/TM New High Quality Garmin Fishfinder 90 Dual Beam w/TM Overviews The Fishfinder 90 also offers Ultrascroll which allows boaters to get a much faster refresh rate on their sonar display. AutoGain, as well as user adjustable gain, is also standard on all of Garmins new fishfinders. Features include: Black-and-white FSTN display, 2.2 W x 3.2 H, 4-inch diagonal, 64 x 128 pixels. Transom/trolling mount transducer. Dual-beam transducer with user-selectable narrow (14) or wide (45) view to see more fish in shallow water. Ultrascroll high-rep-rate sonar. Automatic display re-scaling on range change (no more vertical lines with range changes). New AutoGain technology to see more fish. New sounder design featuring excellent shallow-water performance. Incandescent backlight for display and keypad. New High Quality Garmin Fishfinder 90 Dual Beam w/TM Features 100% safe & secure shopping; Superior customer service. It's perfect for any vessel where space is at a premium. Dual-beam transducer operation gives you better shallow-water performance. The wide viewing angle (60) lets you see fish even off the sides of the boat. With a basic black-on-white display, the Fishfinder 90 has one of the sharpest screens for the money. Available Stores No More Store to Compare. Check New Price Now

Cone Angle

Garmin 90 Fishfinder

First of all, fishfinders use sonar to probe the depths of the sea or lake bed and decree a photograph of what lies beneath the water. When you shine a flashlight into the darkness, the light fans out creating a cone that is narrow at the source and wider at the distant end. Electronics does the same thing. The Cone Angle refers to the spread of the beam at the distant end, so a 90 degree beam offers more coverage than a 20 degree beam. Multi-beam systems, as the name implies, send out more than one sonar beam, cumulatively contribution a much wider field of view. The Lowrance Hds-7 Fishfinder and Gps Chartplotter series offer a remarkable 120 degree view with superior clarity and magnificent detail.

How to choose a Lowrance Fish Finder

Frequency

The frequency of the sonar signal is measured in Khz. In normal the lower the fish finder's frequency the deeper the signal can lanch beneath the surface. For very deep waters 50 Khz will give you deep penetration using a relatively narrow cone angle. Much higher frequencies tend to have wider cone angles and do not lanch the water to the same degree. Tool operating at a frequency of 200 Khz is well noteworthy to face a wide area in a shallow lake and can follow in a more finely detailed photograph of what lies below the surface. Frequency is regularly adjustable and dual frequency options are common.

Fish Targets

When the sonar beam encounters an object it returns a signal to the fish finder. The sensitive electronics in the unit analyze the characteristics of the signals returned and are able to distinguish in the middle of maritime life and other objects. Fish targets are typically represented as a fish emblem on your unit's screen.

Thermoclines

A thermocline describes a layer of water that is at a distinct temperature from the waters nearby it. Thermoclines form rapidly in response to changing conditions or they can be a permanent highlight of a sure ocean area. Lowrance fish finders characterize thermoclines as lines on the display.

Transducer

The transducer is the powerhouse of the fish finder. It controls the frequency of the sonar beam and sends and receives the signals that are interpreted by the Tool into graphical representations. Three foremost things to know about the transducer are how it mounts on the boat, what frequencies it supports and the cone angle it produces. Transducers generally mount on the transom, or hull, out of the way of the motor. Transom-mounts are the most common and easiest to install. Some models with high frequency capable transducers may need to be mounted straight through the hull, which can be a complex installation requiring a hole to be cut on the hull. The Lowrance Hds-7 Fishfinder and Gps Chartplotter series and the Lowrance Hds-5X fishfinder series come with your option of 83/200 Khz or 50/200-Khz transducers.

Display Screen

All the detail in the world is not worth much if you can't see it! Many fish finders use Lcd color displays. generally the larger the estimate of pixels, the good the ability of the display. Grayscale displays use shades of gray to distinguish in the middle of natural and artificial structures, the lake lowest and the type or size of the fish. Crt displays come at a higher price but offer higher resolutions and good display quality.

Lowrance makes a full range of fishfinders, Ff/Gps/Chartplotter combos and offers a full range of other maritime electronics for boating professionals and enthusiasts.

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Garmin 90 Fishfinder

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