Lowrance HDS-7

The Lowrance HDS-7 Gen2 Plotter Sounder is a new fishfinder and updates and improves on the original HDS-7.  Lowrance has really put together a great fishfinder by including a high quality display, GPS plotter and Fishfinder.  

Screen and Display Quality

The screen on the HDS-7 Gen2 is high resolution and measures 6.4″ diagonal.  The extra room from the HDS-5 to the HDS-7 makes a big difference when operating split screen.  To get the high resolution Lowrance used 480V and 640H pixels, which provide great detail.  To provide the color they used a full 16-bit VGA SolarMax which gives great sonar images in any type of lighting.  Overall the HDS-7 is a top quality unit and all that can be said is the only better option is to go a size up to the HDS-10.

GPS Plotter

The GPS on the HDS-7 Gen2 is a built in internal antenna.  The antenna is very accurate and saves from having to install an external unit.  There are many options for the cartography, since Lowrance is compatible with most map packs.  There are two map packs that are sold with the unit the US Basemap and the Insight USA maps.  Make sure that when you buy that the water you are fishing is covered.  The Insight USA maps is an added option which costs about 100 bucks extra.  The maps that work with the unit are the Lake and Nautic Insight Pro, Navionics, and Fishing Hotspots Pro.  Between these options the unit will cover just about any lake you could wish to fish.  There is also an option to add in Radar to the unit, which requires a radar antenna to be purchased.  The radar images are really impressive and can give you a heads up when in foggy conditions.  Lowrance makes the unit with the ability to connect to an auto pilot, so you can plot a course and let the auto pilot take you there.  The unit is NMEA 2000 compatible, giving you alot of options on what to connect the unit to, personally my Lowrance runs my auto pilot .  Overall Lowrance has included a great set of features on the HDS-7 Gen2.


The sonar on the HDS-7 gives nice crisp images and now can support side scanning technology.  There are two choices of transducer the bay transducer 200 kHz and 83 kHz frequencies and the deep water transducer 200 kHz and 50 kHz signals.  The deep water transducer works in water up to 3,000 feet deep and the bay transducer works up to 1,500 feet deep.  The deep water transducer is an added option that costs between 50 and 100 dollars extra, so most of the time you can save a few bucks by opting for the bay transducer.  Lowrance has come out with their version of sidescanning sonar the structure scan sonar.  The structure scan option is really cool and offers great images which can be overlayed on a topo map which results in an incredible image!


The HDS-7 Gen 2 is a great GPS plotter Fishfinder.  By adding some of the options to the mix like radar, auto pilot or structure scanning technology you end up with an incredible fishfinder.  The only negative things I’ve heard is that the sonar cable is too short for large boats (20 feet long) and that the only thing better would have been getting an HDS-10.  If you give the HDS line a try you will be nothing but impressed.

Humminbird 571 Portable

Humminbird recently released the 571 HD DI portable fishfinder, to the 5 inch display market.  The idea of the unit is to provide everything you need to have a fishfinder on the go.  Included is a suction cup mount, which provides a great sonar image.  There is also a soft portable case, which is really nice for transport.  The Humminbird 571 HD also is an ice fisherman’s dream.

Screen and Display Quality

The screen is high resolution 640V x 320H pixel display.  The grayscale has 16 levels, which gives good images in any type of lighting.   In high light conditions like ice fishing with high sun and snow on the lake the case helps to keep glare down to a minimum.


The sonar on the 571 HD DI has two modes.  The first is Downimaging, which provides great sonar pictures that show great detail.  The Dualbeam Plus also gives good sonar pictures, but with the shorter frequency of 200 kHz and 455 kHz versus the 455 kHz and 800 kHz that is used for the downimaging isn’t as detailed.  You can operate these two modes simultaneously, which is really cool because you can see firsthand the improved picture from the downimaging to the dualbeam plus.  The sonar works in up to 600 ft of water, which is good enough for most fishermen.

For the Ice Fishermen

Humminbird made the 571 HD DI with ice fishermen in mind.  The bag works to keep the unit safe during transport, and has a bit of extra room for a few gadgets if you like.  The unit works great when connected to the small batteries icefishermen prefer.  Setting the unit up is easy, just clip the two connectors on the battery and power the unit on.  The transducer can stay connected in the bag, so you just drop it down and you have a sonar image ready to go!  Having a quick setup is key when trying to locate fish through the ice and drilling lots of test holes.  Another key is that when its cold out you don’t want to fiddle with the wires and take off the gloves, this unit delivers in that category.


The 571 HD DI Portable is really a great unit and lets you take a fishfinder with you both icefishing and boat fishing.  The down imaging and dual beam sonar give great pictures and the screen has great resolution.  If you are an ice fisherman the 571 is a great first unit.  If you buy one of these you will be nothing but impressed!

Humminbird 598ci

The new Humminbird 598ci HD SI Combo Fishfinder, is one of the best equipped and performing fishfinders in the 5 inch class.  The 598ci incorporates many of the features that had been mostly exclusive to the 700, 800, 900, and 1100 series fishfinders in the past.  By packing all these features into a unit that retails around $800, Humminbird has put high end options within reach of the everyday fishermen.

Screen and Display Quality

The screen on the 598ci HD SI Combo is 5 inchs diagonal.  To give crisp images whether in down imaging, side imaging or GPS modes, Humminbird uses 640 vertical and 640 horizontal pixels.  The result of creating a product with such high resolution is that when viewing side imaging, the pictures really pop and show great detail.  The color on the unit is 256 TFT, which provides the necessary brightness for the most demanding situations like when wearing polarized glasses or when viewing in direct sunlight.  The 598ci uses the same resolution and screen size as the 597ci HD DI, which we have had great luck with when salmon fishing the Manitou Islands in northern Lake Michigan.  The unit is able to be either flush mounted or has a tilt and swivel quick disconnect mounting system that comes with the fishfinder.  Overall the display receives top grades, thanks to the high resolution and 256 TFT color.


The GPS on the 598ci HD SI has an internal antenna.  In addition to the built in GPS, there is also a built in map pack by Humminbird.  The built in maps work well, the unit is also compatible with Navionics Plantinum, Gold and Hot Maps and the LakeMaster Maps, which cover about any body of water you could possibly want.  When available there is also a 3-d chart view, which gives a first person perspective of both above and below water topography.  The 598ci isn’t able to use the i-pilot feature, which allows for fishfinder and trolling motor integration, which is available on the 700 and higher series.  Although having option to connect to the i-pilot, I really feel like with a 5 inch fishfinder those options aren’t necessary.  On a screen that size the GPS and the sonar features work really well, giving great pictures and performance.  The model that is on a friends Montauk Boston Whaler is mounted on the dash and covers the GPS and Sonar needs.


The sonar on the 598ci has many of the top of the line options that come with the 700 series and up fishfinders by Humminbird.  The features included are very impressive and currently the 598ci is the only fishfinder in the 5 inch display market that can boast them.  The addition of built in sideimaging on the 598ci is a huge step for Humminbird.  The Down imaging, available in other 500 series models is also a great feature and allows for enhanced sonar pictures, which have more definition and gives a great sonar picture.  The sonar frequency for the down and side imaging transducer are 455 kHz, which works in depths up to 100 feet.  The 598ci doesn’t use the 800 kHz signal which is used in the 700 and up fishfinder series.  The results are images that are not quite as sharp and detailed.  However the sonar images do extremely well.  The Dualbeam transducer has a frequency of 200 kHz and 83 kHz, works in water up to 1,500 feet.  There is an optional deep water transducer which will work in water up to 3,000 feet deep.


Humminbird has introduced a great fishfinder to the 5 inch fishfinder gps combo market.  The addition of sideimaging to the 598ci HD allows fishermen access to new technology, which is really impressive and quite simply helps catch fish.  Between the side imaging, GPS functions, and other sonar capabilities the 598ci HD SI is sure to be a fishermans favorite!

Humminbird 1198c

Humminbirds 1198c SI Combo is the top of the line fishfinder for Humminbird.  The screen is 10.4 inches in size, so that when in dual screen mode with both GPS and fishfinder the pictures are both detailed and large in size.  Additionally the side imaging sonar images are the best on the market.

Screen and Display Quality

The 10.4 inch screen has a very high resolution, which is 600 x 800 and is high def quality.  In addition to high definition the color is rich on the 1198c SI, 4:3 color TFT which make the on screen maps and sonar images pop.  Additionally the TFT color has setting for all light conditions and performs even at mid day sun with polarized glasses. Continue reading “Humminbird 1198c”

Humminbird 597ci

This Unit Delivers Big Time Capabilities Into a Compact Unit

For this review, I’m looking at the Humminbird 597ci HD DI Fishfinder.  While I used this model quite a few times on a fellow fisherman’s boat, it did not come equipped with the DownImaging feature which is somewhat new, but quite a brilliant technology.  I’ve seen the DownImaging in action while pre-fishing for a salmon tournament out of Grand Haven, MI.  I was lucky enough to be invited for the day and he was sponsored by cannon/humminbird and had all the latest toys and gadgets including a model with downimaging installed.    It basically gives you a much more clear picture of what’s under the water.  Something that may have looked like tree on a regular sonar displays the same image with other fish inside of it.  The fish no longer have anywhere to hide! Continue reading “Humminbird 597ci”

Garmin GPSMAP 421

Screen and Display Quality

Garmin has equipped the GPSMAP 421 with a 4 inch screen.   The pixels on the display are 240 x 320, which provides a nice picture.  Images are clear and the display is plenty bright enough to give high quality pictures in bright conditions.   A unique feature of the GPSMAP 421 is that unit is waterproof, and performs well under harsh conditions.  Split screen GPS and Sonar works well on the display and allows you to select multiple GPS views to use along with the sonar images. Continue reading “Garmin GPSMAP 421”

Lowrance HDS-5

Screen and Display Quality

The display on the Lowrance HDS-5 Gen2 is high resolution and definition.   The 480 x 480 does well on the 5 inch screen and provides plenty of clarity while using all the different pages.  A key to the screen performing well in bright conditions, and something that often troubles these types of units is the cold-cathode fluorescent backlighting.  The operation of the unit is very straight forward and intuitive.  The screen does quite well while using both the GPS and Sonar features, while using half the screen for each function.  Overall the display is very robust and can handle being used in harsh conditions, which is why the HDS-5 Gen2 has been the choice of so many fishermen.

Continue reading “Lowrance HDS-5”