Fish Finder Displays
There are two components to a fish finder display: Display Type and Display Resolution.
Fish Finders have two main display types: Liquid Crystal Display (LCD) and Cathode Ray Tube (CRT). An LCD display generally have good contract
in daylight, use a small amount of current and tend to be compact. They are available in resolutions up to 320 x 200 pixels, the smallest dot on the
display screen. Note that the protective lens over the display must not cause excessive reflections in direct sunlight or it may be difficult to read the
A CRT display is often compared to a television screen. CRTs are available in full color and monochrome (grey scale) models. On color models the
relative strength of the sonar echo back to the fish finder is displayed which allows the angler to differentiate between different objects easier. Some
color displays are harder to see in direct sunlight than others. Depending on the model you choose you may wish to consider a viewing hood or
mounting the display unit in a shaded area.
The key to the display resolution is the number of pixels which is the number of "dots" on the screen. The rule of thumb is that the more pixels on the
screen the more detail that you will see. Higher resolution models will allow you to see fish near the bottom, distinguish tightly grouped objects from
one another and be able to see fish near bait balls.
There are two important components to the resolution: the vertical pixel count and the total pixel count. The vertical pixel count is the number of
pixels from the top to the bottom of the display. The higher number of vertical pixels the more accurately the fish finder will show target depths.
The total pixel count is the number of pixels per square inch of the display screen. The higher number of pixels the more detail you will see, the better
the representation on the screen will be and the better split screen images will be. Keep in mind that in order to take advantage of very high