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Comparison Lowrance Hook2 7 SplitShot vs Lowrance Hook2 5 TripleShot

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Lowrance Hook2 7 SplitShot
Lowrance Hook2 5 TripleShot
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Automatic echo sounder settings.
Automatic echo sounder settings.
Typefish finder-chartplotterfish finder-chartplotter
Specs
Scan depth152 m
152 m /91m — side scan/
Number of beams of radiation22
Number of frequencies33
Radiation frequency200/455/800 kHz200/455/800 kHz
Emitter power500 W500 W
CHIRP Technology
Side scan
Bottom scan
Digital data processing
Display specs
Display
7 "
800x480 px
colour
backlight
5 "
800x480 px
colour
backlight
Features
Functions
Sound alarm
Determination of the distance to the fish
Indication of symbols in the form of fish
Real time fish display
Shallow/shoal
Auto-change depth scale
Depth display range
Water temperature indicator
Speed indication
Distance display
Sound alarm
Determination of the distance to the fish
Indication of symbols in the form of fish
Real time fish display
Shallow/shoal
Auto-change depth scale
Depth display range
Water temperature indicator
Speed indication
Distance display
Connection interfaces
output for external GPS antenna
output for external GPS antenna
Specs of the chartplotter
GPS module
Memory card slot
Base map
Adding new maps
Waypoints30003000
Number of routes100100
General
Key backlight
Dust and water protection
 /IPX7/
 /IPX7/
Power source12 V12 V
Dimensions236x164.2x84 mm185.7x109.8x84 mm
Added to E-Catalogseptember 2018march 2018

Side scan

Availability of the side scan function in the echo sounder.

Devices with this feature are able to "see" the bottom and underwater objects not only directly under the vessel, but also on the sides of it. Note that different models can differ markedly in the angle of coverage of the side space. However, the side scan anyway expands the capabilities of the echo sounder and provides additional features compared to the usual bottom one.

Digital data processing

The presence of a digital data processing system (DSP) in the design of the echo sounder.

Digital processing allows you to separate the received signal into extraneous noise and useful data. Of course, such a division is not 100% reliable; however, the level of noise in the filtered signal is still significantly reduced, and the screen receives a maximum of useful information and a minimum of extraneous information. The disadvantage of this function is traditional: echo sounders with DSP are somewhat more expensive than usual ones.

Display

— Screen size. Diagonal screen size in inches. The larger the screen, the more information can be displayed on it and the more detailed this information can be. On the other hand, this parameter noticeably affects the dimensions of the device, and large screens are expensive, especially since you need the appropriate resolution for normal image quality (see below).

Touch. The presence of a sensor in the design of the display. This feature allows you to control the device by touching the icons on the screen — similar to how it is done in smartphones and tablets. Touch control provides more options than the classic one, using buttons and switches, besides it is more visual — however, such devices are more expensive.

— Display resolution. Display size in dots (pixels) horizontally and vertically. The higher the resolution, the more detailed image the screen is able to produce, the smaller objects can be clearly displayed on it and the more comfortable viewing. At the same time, the specificity of echo sounders is such that too high resolution is not required even for high-end models: for example, modest by the standards of smartphones or tablets 640x480 with a 5" screen are considered quite sufficient even for an advanced device.

— Colour. The ability of a screen to display colours. In this case, the simplest division is used:

Monochrome.... Displays that display information only in shades of one colour. Theoretically, the main colour can be any, but in this case, the vast majority of monochrome screens are black and white. Their advantages are low cost and energy consumption, as well as good visibility in the sun; at the same time, such an image allows you to work with quite a variety of types of data, which is enough even for very advanced echo sounders (see "Type"). However, this variety is not as wide as for colour displays, as a result, for chartplotters (see ibid.), such an image is not suitable — if it is impossible to display different colours, some of the important information on the maps is lost.

Coloured. Screens capable of working with multiple colours. The variety of colours can be quite small, but the image still turns out to be more informative than black and white: different colours can indicate different depths on the map, water temperature changes, etc. Due to this, this type of display is found in all types of navigation devices (see above). Its main disadvantage can be called a higher cost than that of monochrome screens.

— Backlight. The screen has its own backlight system. This feature makes the display independent of ambient light and allows you to see the information on it even in complete darkness. At the same time, the backlight increases power consumption, which is important during long-term operation from an autonomous source (for example, a boat battery). Therefore, it can be turned off.

Memory card slot

The presence in the design of the device slot for working with removable memory cards. Some models may have more than one of these slots.

Memory cards are very popular in modern portable electronics due to their lightness, compactness and relatively low cost. In chartplotters, such media can be used both to expand the device's own built-in memory, and to exchange data with other equipment — for example, rewriting tracks on a laptop or downloading updated navigation maps from it (see below). However, it is worth considering that there are many varieties of memory cards, in most cases incompatible with each other. On the other hand, chartplotters usually use a common standard media, most commonly SD or microSD.
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