The sound wave spreads as it gets further from the transducer. The wider the cone, the larger the coverage area, but the as the cone angle spreads, sensitivity diminishes. A 20-degree cone is considered a versatile angle for fishers who frequent different water depths. More advanced devices come with double and triple beams, ideal for scanning deep water depths.
1 Based on the level of net new purchases (purchases less credits) that are posted to your Gas Advantage Mastercard account in any monthly billing period, you will be entitled to a discount on each litre of gasoline or diesel fuel that is purchased for a motor vehicle at Canadian Tire Gas Bars during the following monthly billing period and that is charged to your Gas Advantage Mastercard. The discount that you receive in a billing period will be reduced to 2¢ per litre after you have made purchases of more than $500 for gasoline, diesel fuel or any other sundry items at Canadian Tire Gas Bars during that billing period using your Gas Advantage Mastercard. For complete program details please read the Canadian Tire Gas Advantage Mastercard Terms and conditions.

A GPS is a must have for many fishers and having it in one unit with a fish detector is economical, space saving and convenient. Having the addition of a GPS gives you many benefits. It will give you the ability to mark hot fishing spots and easily return to them in the future, as you can mark the spot on the GPS and then track your way back to it later. These spots are called waypoints and on most units you will be able to mark hundreds or even thousands of them.


Power output is measure in watts, often represented by the “W” symbol. With more power you’ll get clearer, more-accurate readings, and you’ll be able to find fish in deeper water. Units with limited power won’t always send the signal out far enough and you can get poor quality images. Look closely for a good power output and frequency options. The right combination can help you choose the right unit, based on overall ability. You’re looking for balance of depth, power and clarity of image.

To get the most of the both there’s the dual beam type of transducers. It’s also called dual frequency and which combines both features in one unit. Other types of transducers are more specialized. They include multiple beams (can be 4 or more). These cover a larger area of the underwater and can even give a 3D image on the display. One more option is the side beam transducer. These units shoot their signals to the sides, which increases the search area for fish.
As we mentioned, the strength of a fish finder is in how well it can locate the fish, which is why you need a high-quality transducer. CHIRP technology is one of the best you can find, and it provides a 200-watt RMS signal that can reach down to 1,600 feet in fresh water and 750 feet in salt water. Overall, you can find plenty of fish with this device.
If you’ve used a fish finder before, then you might be wondering why it’s necessary to get one with a GPS. To be perfectly honest, if you are someone who likes to fish in your local area and either casts from the shore or the back of a small boat, then GPS capability may not be something that’s worthwhile. However, for any fisherman who likes to go searching for the best catch, having GPS installed on your finder can make a world of difference. Here are some of the best reasons to get the  best GPS combo fish locator.
Fish finders were derived from fathometers, active sonar instruments used for navigation and safety to determine the depth of water.[1] The fathom is a unit of water depth, from which the instrument gets its name. The fathometer is an echo sounding system for measurement of water depth. A fathometer will display water depth and can make an automatic permanent record of measurements. Since both fathometers and fishfinders work the same way, and use similar frequencies and can detect both the bottom and fish, the instruments have merged.[2]
Pay a bit more and you get a bit more with the Humminbird Helix 7 SI GPS. The screen is massive, compared to other combination units – 12 inches with 1280×800 pixel resolution. The any-angle viewing and reduced glare are excellent. The Humminbird also has the electronic capability to support almost any advanced feature you can imagine, including, of course, precision GPS.
Unless you are an experienced fishermen, you will only use one type of beam in order to find fish. A wide beam transducer covers a large area but provides less bottom detail and often has a less powerful frequency of around 50 kHz. Narrow beam covers less underwater but provide more detail and bottom definition from the additional frequency around 200 kHz.
NO INSTALLATION REQUIRED: That got your attention, didn't it? If you're on a budget, and don't want any sort of permanent installation mods to your boat, the Humminbird Smartcast series may be your answer. You simply cast the green transducer to the spot where you want to investigate, and the signal comes back to the wrist module (RF30) or the traditional display model (RF15). This series doesn't have a lot of bells and whistles, but for my kind of fishing/paddlecraft, it may be a great solution.
1 Based on the level of net new purchases (purchases less credits) that are posted to your Gas Advantage Mastercard account in any monthly billing period, you will be entitled to a discount on each litre of gasoline or diesel fuel that is purchased for a motor vehicle at Canadian Tire Gas Bars during the following monthly billing period and that is charged to your Gas Advantage Mastercard. The discount that you receive in a billing period will be reduced to 2¢ per litre after you have made purchases of more than $500 for gasoline, diesel fuel or any other sundry items at Canadian Tire Gas Bars during that billing period using your Gas Advantage Mastercard. For complete program details please read the Canadian Tire Gas Advantage Mastercard Terms and conditions.
Screen Color & Resolution is an essential factor in your selection. Color screens are the new norm on today’s fish finders. A color screen enables you to more easily decipher objects in the water, giving you valuable insight into your game fish. Also consider the amount of pixels on your screen—the more pixels, the greater level of detail you can see. LED backlit screens provide brilliant visual display, particularly for fishing in low-light conditions.

A fish finder is an incredible tool that can help take your sport or commercial fishing venture to the next level. However, even the best fish finders can use a little improvement – and adding a GPS is one way to do this.The best fishfinder GPS combo will help you navigate whatever body of water you are on at the same time as it allows you to find where to fish more quickly, accurately and efficiently.
It’s often been said that the act of fishing isn’t actually about catching a fish. Rather, it’s about a quiet moment with nature and a chance to sit, think and relax, whether on your bass fishing boat or on the banks of a river. Of course, if you’re a sport fisherman reeling in that prize monster on a white-capped ocean, there isn’t much relaxation to be had. If you prefer ice fishing or fly fishing, shop eBay for everything you need for a day on the water. We have the right gear for you, regardless of whether your allegiance lies with Orvis, Shimano or Abu Garcia.
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