Simrad’s GO9 XSE Combination GPS/ Fishfinder offers a networkable 9” Touchscreen unit at an affordable price point. An Internal 10Hz GPS Receiver quickly and accurately locates position on the included C-Map Pro Charting while the included TotalScan Transom Mount Transducer provides detailed underwater images. Compatible with detailed mapping from C-MAP MAX-N, Navionics, Insight, Insight Genesis, and NV Digital Charts.
The display is all about pixels. With more pixels you will be able to see more details, so it’s also an important factor to consider. More pixels also means higher price of the fish detector. We would suggest going minimum 240(v) x 160(h) pixels of the screen. However, this screen will give a pretty blocky image. To have a sharper image and better resolution, you will need to invest more.
Here’s a useful tip for judging the width / thickness of a sonar return: switch on the vertical flasher (also know as a-scope) on your fish finder if it has one (to do this on the Deeper App, go to Settings > Sonar > Vertical Flasher). The vertical flasher on the right side of your screen will show you exactly what’s under your sonar at this exact moment. You can use it for vertical jigging, and of course forice fishingtoo. For judging fish size, look at both the thickness and width of the returns on your vertical flasher. A larger fish will give both a wider and a thicker return.
By calculating the amount of time between when the sound wave was sent and when it bounced back, it measures the distance and shows it on the screen. If the wave doesn’t encounter anything on its way, it reaches the bottom. If the bottom is soft and it’s just mud and weeds, the signal gets absorbed. A rock bottom will reflect a stronger signal back.
This unit has a colorful and compact 3.5 inch color screen that is fully equipped with a Garmin high-sensitivity GPS and Garmin’s very own Sonar, which uses Garmin CHIRP ClearVu Scanning. This GPS gives you the ability to mark your favorite hotspots and fishing areas, docks, and slipways, while using high-speed data technology to display any information that you may need, immediately on the screen.
The final point to remember when you are looking out for fish arches is that it doesn’t need to be a full arch. Half arches (like the ones shown in the screen shot above) also show that there is fish. In ourtutorial on how sonars work, we explain in detail why sometimes you get a full arch and sometimes you get a half arch. The short answer is that you will get a full arch if a fish swims through the whole of your sonar cone, and a half or partial arch if they only swim through part of it.

Check out our Factory Outlet Store where you can find all of our recertified marine electronics. Items and quantities are limited, so do not hesitate if you find and item you are looking for. Recertified products are restored to like new condition and carry a 90 day warranty, so you know you are getting one heck of a deal. If you have any questions you can always contact our support team via our support ticket system at We are always happy to troubleshoot and answer any questions you may have.
Finally, we come to the HDS-7 from Lowrance. I have had limited experience with this company, but from what I know it is a fantastic maker of fish finders, and the HDS-7 is no exception. This particular model has a seven-inch touchscreen, which makes it one of the most high-tech options you can find anywhere. If you like a more ergonomic design and want something that is more user-friendly, the HDS-7 could be for you.

You probably already know how to use a Garmin chartplotter. It is that intuitive. Just turn it on and you can quickly follow the simple menu. Everything is at your fingertips to quickly and easily plan your route and set your course. And most Garmin echoMAP™ and GPSMAP® chartplotters are available combined with built-in sonar capabilities. These include advanced HD-ID™ sonar, CHIRP sonar and Garmin ClearVü™ and SideVü™ scanning sonar, which provides the clearest scanning sonar images on the water.
Fishfinders allow anglers to see a graphic representation of what is beneath their boats so they can identify fish. To choose a fishfinder, consider the type of unit—whether it includes GPS and is part of a boatwide network, size of the fishfinder’s footprint, resolution of the display, how much transmitting power you need, and what frequencies will work best in the inland, coastal or deep-water environment where you fish.
Modern lines are made from artificial substances, including nylon, polyethylene, dacron and dyneema. The most common type is monofilament made of a single strand. Anglers often use monofilament because of its buoyant characteristics and its ability to stretch under load. Recently alternatives such as fluorocarbon, which is the least visible type, and braided fishing line, also known as 'superlines' because of their small diameter, minimal amount of stretch, and great strength relative to standard nylon monofilament lines.
Ultrasound frequency used by a fish finder generally ranges from 15 kHz to 200 kHz. However, the majority of the conventional fish finders oriented for recreational craft utilize 50 kHz and 200 kHz. Such fish finders available in the market incorporate electronic circuitry that can transmit and receive ultrasound in these two frequencies. Also, a transducer mounted on the bottom of the craft is configured to handle these two frequencies.

Kiss has collectable action figures. Does Madonna have action figures? Eh, better not answer that one. Back in the day, I was a member of the Kiss Army. What sort of fan club does Madonna have? Better step away from that one too. Pluto will always be a planet to me, and Kiss is already in *my* rock and roll hall of fame. I love the smell of flamethrowers and flash pots in the morning … smells like … victory.
Bright 10” Sunlight Viewable, Touchscreen Display. Garmin’s GPSMAP 7610xsv with 10Hz High Sensitivity GPS Receiver, Preloaded Coastal and Lake Mapping and Wi-Fi is a top choice combination unit for any mariner. New features to the 7610xsv include FLIR Camera Support, Smart Boundaries, and More.HD-ID Sonar, 1kW CHIRP, CHIRP DownVu and CHIRP SideVu built-in. Transducer Required and Sold Separately.
A GPS also gives you navigation through the waters. For this you will need to select a unit that comes with background maps and charts. One more benefit of the addition of the GPS is safety. Wherever you fish, you will have the confidence that at the end of the day the GPS will easily point you home. For example, you could be fishing throughout different locations during the day, or you could lose sight of land, or some severe weather could suddenly roll out. In such situations, a GPS will give you the exact direction to your home and will tell you how far it is.
Hockey tape was made for the ice, and even though hard-water anglers are looking for a different kind of score, they should always have a roll on hand. A few wraps around the butt and foregrip of any jigging rod immediately improves the hold and comfort, but hockey tape can be used on any ice tool. If you’ve ever had the cheap rubber handle cover disappear from your ice scooper, you know the feeling of metal freezing to a glove or the burning sting of touching it with your bare hand. A few wraps of hockey tape can easily fix that. Should your bibs or jacket get hooked or ripped, the hockey tape will keep a tear from getting worse until you can make a permanent repair.

In operation, an electrical impulse from a transmitter is converted into a sound wave by an underwater transducer, called a hydrophone, and sent into the water.[3] When the wave strikes something such as a fish, it is reflected back and displays size, composition, and shape of the object. The exact extent of what can be discerned depends on the frequency and power of the pulse transmitted. Knowing the speed of the wave in the water, the distance to the object that reflected the wave can be determined. The speed of sound through the water column depends on the temperature, salinity and pressure (depth). This is approximately c = 1404.85 + 4.618T - 0.0523T2 + 1.25S + 0.017D (where c = sound speed (m/s), T = temperature (degrees Celsius), S = salinity (per mille) and D = depth).[4] Typical values used by commercial fish finders are 4921 ft/s (1500 m/s) in seawater and 4800 ft/s (1463 m/s) in freshwater.

Early sporting fathometers for recreational boating used a rotating light at the edge of a circle which flashed in sync with the received echo, which in turn corresponded to depth. These also gave a small flickering flash for echos off of fish. Like today's low-end digital fathometers, they kept no record of the depth over time and provided no information about bottom structure. They had poor accuracy, especially in rough water, and were hard to read in bright light. Despite the limitations, they were still usable for rough estimates of depth, such as for verifying that the boat had not drifted into an unsafe area.
Higher frequency transducers have shorter wavelengths and more wave cycles per second, which means you can visualize more details (smaller fish) but have only shallow to moderate depth capacity. One sound wave at 200kHz is slightly longer than 1/4", so a 200kHz sound wave will be able to detect fish as short as a quarter of an inch. A 200kHz transducer has a range of only about 600'. High frequency provides a crisp, clear picture of the bottom with the tradeoff of less depth range. For best resolution, choose 800kHz or 455kHz transducers.
Shipping is always free for parts and accessories for all our Marine Electronics. We have just about any replacement part that you would need to repair your HawkEye product, and a vast amount of marine accessories to customize your boating and fishing experience. Whether you are looking into our cable float kit or replacement lens for your hand held depth sounder, we have it all.
Moreover, the 7SV also has a built in Garmin GPS that allows you to make your own waypoint maps, which makes marking all those stumps, docks, and brush piles as easy as clicking a button or two. All map information is transferrable to other Garmin fish finder devices if you upgrade as well, adding even more versatility to the 7SV. Additionally, the 7SV also has its own rechargeable battery pack that helps you stay on the water all day long, thereby increasing your chances of finally reeling in that trophy catch you’ve been looking for all these years.
Winter weather may run us inside, but that doesn't mean the sport sleeps. Those "other things" I mentioned will be covered when I write my book, but for now they will have to wait. In the mean time, let's discuss some other "deep thoughts". Or should that be "thoughts about the deep"? Or maybe it would be "I thought this water was deeper". This article is about depth finders, or more commonly called "fish finders". In this issue, we'll discuss your options when it comes to selecting one of these gadgets, along with tips for temporary or permanent installation.

Modern lines are made from artificial substances, including nylon, polyethylene, dacron and dyneema. The most common type is monofilament made of a single strand. Anglers often use monofilament because of its buoyant characteristics and its ability to stretch under load. Recently alternatives such as fluorocarbon, which is the least visible type, and braided fishing line, also known as 'superlines' because of their small diameter, minimal amount of stretch, and great strength relative to standard nylon monofilament lines.