Best Fishfinder GPS Combo Under $500

So you have a budget and looking to buy best fishfinder gps combo under $500. The good news is that within this budget you can get a screen size up to 5 inches. 5 inches is reasonable size and can provide you precision on screen that is essential to differentiate structure, bottom and fish.

Also within this budget there are different technologies offered like Down Imaging, Side imaging, CHIRP and Dual Beam. You cannot get 360-degree imaging with in this budget but with 4 to 5 inch screen size, gps combo and with few technology this budget of under $500 can get you a really good fish finder on board.

If you are not aware of what these technologies are, then scroll towards bottom of this page and read brief explanation of each.

NAMEGPSTECHNOLOGYSCREENPRICE
LOWRANCE MARK-4YESDual Beam 2D4''Click Here
Humminbird 409640-1 HELIX 5 YESDual Beam – Side Imaging/Down Imaging5''Click Here
RAYMARINE DRAGONFLY 4 PRO YESHIRP Dual Sonar, Down Vision, Conventional CHIRP4.3''Click Here
GARMIN GPSMAP 431S YESDual Beam4''Click Here
HUMMINBIRD 409380-1 398CIYESSide Imaging, Down Imaging, Dual Beam3.5''Click Here
HUMMINBIRD 409470-1 600 698CIYESSide Imaging, Down Imaging, Dual Beam5''Click Here

Lowrance Mark-4

Best Fishfinder GPS Combo Under $500


Lowrance Mark -4 has proven track record and make into our list of best fishfinder gps combo under $500.  It comes with 4-inch black and white LCD. The black and white screen can be viewed comfortably in bright sun light as well. The display also includes a special trackback system which serves the purpose of zooming in upto 400 percent. This helps in viewing hard to see detail in small screen.

The sonar system employs dual beam 83/200khz frequencies to scan both shallow and deep water and with 2100 watts peak to peak power Mark-4 scans depth upto one thousand feet. You can easily mount this on a trolling motor boat via tilt and swivel mount which comes with the package. Along with cursor control round keys there are 6 more keys below the main screen which give you complete easy control on the machine.

Lowrance has one of the best user interface after humminbird which is made even easier with easy to control buttons. If you are planning to go out fishing in ocean then do not go with out a GPS fish finder. Things can go wrong in no time when you are out on sharp river current. You might be enjoying fishing but you never know when you have crossed the safe limit and shoreline is miles away.

Best Fishfinder GPS Combo Under $500

In such a life threatening situation you need a GPS to navigate your route. This is one big benefit of GPS as it gives you the freedom to roam. Additionally, GPS has the chartplotter where you can drop waypoints and tracks and follow them back to your favourite fishing points. It comes with a MicroSD card slot so you can put in high detail maps.

Battery lasts for 8-10 hours and you can recharge it with a 12VDC battery. The 4 inch screen is relatively small size and sometime it is harder to see in it. Although the user interface is easier to use but some users have faced difficulty in turning GPS off.

Display: 4 inch black and white
Technology: Dual Beam 2D, 83/200Khz
Depth: 1000feet
Power: 2100 Peak to Peak
Battery: 8-10 hours – 12 VDC
Water Proof: YES
Salt water fishing: YES
GPS: YES
SD card: YES

Humminbird 409640-1 HELIX 5 

best fish finder GPS combo under $500

5 inch colored display with 256 colors on 800 x 480 pixel matrix. The resolution is perfect for the screen size and offer crisp easier to see images. Its very important that the resolution to be higher than at least  240 x 160 pixels. This Humminbird is way ahead than the critical point and into the safe zone.

409640-1 makes into the list of best fishfinder gps combo under $500 for many factors. Its comes with Side Imaging , Down Imaging and Dual Beam sonar. This is complete arsenal to have a great fishing day on your vessel. You can view results from different frequencies on split screens . The 5 inch display screen with perfect pixel matrix and easier to work user experience will make your life a lot easier on your boat.

best fishfinder GPS combo under $500

All the structure, fish, objects and bottom can be viewed on your hand. The power out in RMS is 500 watts while peak to peak power for the scanning is 4000 Watts. The maximum depth which can be measured with this fishfinder is 1500 feet with Dual Beam or 2D imaging while you can go a maximum of 100feet depth with the side imaging.

There are other details also which come on the screen like alarms and temperature. Humminbird boasts its easy to use interface as you can control what to appear on the screen easily with Switchfare.

The good news is that this fishfinder comes with inbuilt GPS with Unimap cartography which has maps stored for inland US and along the coastal line of US. So if you are planning to do an fishing expedition in a new place then having a gps combo fish finder is a bliss. You can drop 2500 waypoints on this device. Waypoints are dropped with just one button and they are not permanent you can easily remove them. In addition, 45 routes and 50 Tracks and 20,000 points can be marked with this fish finder. Navionics maps will work with this Helix unit.

Display: 5 inch 800px x 480px colored
Technology: Dual Beam – Side Imaging/Down Imaging
Depth: 1500feet Dual beam – 100 Feet Side Imaging
Power: 500 Watts
Battery: 8 Hours – 8-20VDc
Transducer : YES , transom mounting
Water Proof: YES
Salt water fishing: YES
GPS: YES
SD card: YES

Raymarine Dragonfly 4 Pro 

Best Fishfinder GPS Combo Under $500

4.3 inch display screen with backlight to help viewing in bright sunlight. The pixel matrix is 480×272 to ensure that the images formed by scanning are crisp enough to be seen easily with naked eye. The built is very strong and it can be used in all sorts of conditions. Some fish finders have been reported for internal fogging which makes the screen almost impossible to read crucial details. Raymarine has ensured that no internal fogging will happen on this device.

Raymarine provides CHIRP Sonar wide band beam. Along with CHIRP Dragonfly 4 comes with 2 Channels – Sonar conical beam and Down vision wide fan beam. It is a complete package for an excellent fishing experience. You can explore the depth till 600 feet with CHIRP Down Vision and to 900feet with CHIRP sonar models. The unit comes with 1 year warranty from Raymarine if bought with in US.

best fish finder under 300

The unit boasts it GPS capability with the ability to store 3000 way points and you can classify them into 100 groups of different waypoints. This classification will help from not mixing your waypoints. Also you can place more interesting fishing spots in a favourite group.  15 Track can be stored with each having an ability to retain 10,000 points. All chart media is meant to be stored onto a MicroSD card. It comes with Navionics chip preloaded with maps.

Another cool aspect is hidden in the name. It is a PRO unit which means that it supports WiFi. You can download Raymarine app into your smartphone and connect both smart machines. Open the app and you can view all the crisp images on your smartphone. The sharing option will allow you to share cool data on internet with you your friends.

Display: 4.3 inch 480px x 272px colored
Technology: CHIRP Dual Sonar, Down Vision, Conventional CHIRP
Depth: 600feet CHIRP Dual beam – 900 CHIRP sonar
Power: 500 Watts
Battery: 6 Hours – 12VDc
Warranty: 1 year
Transducer : YES , 20 feet
Water Proof: YES
Salt water fishing: YES
GPS: YES
SD card: YES

Garmin GPSMAP 431S 

Best Fishfinder GPS Combo Under $500


4 inch diagonal screen with pixel matrix of 240 x 320 pixels which is just over the critical point. The model although makes into the list of best fishfinder GPS combo under $500 but it has the least pixel ratio in this list. Garmin has tried to overcome the deficiency by making the screen ultra bright to counter low pixel ratio.

Model comes with Dual Beam and operates at 77/200 Khz. The larger frequency of 200Khz is used to measure the shallow water while if you are in deep water like ocean then you would have to use the 77Khz beam. The smaller frequency beep has better penetration power and goes deep. But as it goes down the frequency waves loses its power so the result you will get on the screen will be more blurry. If the pixel ratio is low like in this model then you might have trouble viewing what is on the screen. The maximum depth which can be measured with Dual Beam 77Khz is 900 feet which is pretty good at transmitting power of 500 Watt the root mean squared value.

Best Fishfinder GPS Combo Under $500

This is GPS combo Fish finder and has comes with preloaded GPS maps for US inland lakes. You can put in more maps as there is a slot for MicroSD card. The number of waypoints that can be stored in this fish finder are 3000. The number of routes capacity is 100. The track log capacity is 50 and 10,000 points can be saved in this model. GPS is managed by internal antenna.

Display: 4 inch 240px x 320px colored
Technology: Dual Beam
Depth: 900feet Dual beam
Power: 500 Watts
Water Proof: YES
Salt water fishing: YES
GPS: YES
SD card: YES

Humminbird 409380-1 398ci 

Best Fishfinder GPS Combo Under $500

Relatively smaller screen size of just 3.5 inch with pixel ratio of 320 x 240. It is just over the safe zone by crossing minimum ratio requirement of 240 x 160 pixels. The screen offer 256 colors so it is just the starting good screen. The good part is that the display has the backlit which is something non-negotiable. In striking sun light, you will be still able to see what is on the screen and analyse the details.

Equipped with side imaging and down imaging you can scan the water and view in split screen.  Humminbird has provided 4000-watt power on this machine. You can also avail QuadraBeam Plus but that would require to buy an additional transducer if you can afford. The maximum output RMS is 500Watts with target separation ability of 2.5 inches. The standard sonar frequency is 200/83/455 Khz. The maximum depth that can be 100 feet with side and down imaging. While 1500feet with dual beam. It is important to note that Amazon does not mention dual beam inclusion in this model while Humminbird official website says Dual Beam is included in this fish finder.

Best Fishfinder GPS Combo Under $500

The temperature sensor is built in with in the transducer and transducer is mounted on transom. Like other Humminbird model SwitchFire is included in this model as well. In addition to sonar recording you can take screenshots of the display as well. It will take some time but you will get used to the user interface soon.

Cone beams can be sent at 20 degree, 60 degree, and 85 degree. You can gain wide and narrow beam splits as per your likings. There is one card slot included in the device and the software is upgradeable from the Humminbird.

This model comes with GPS along with Humminbird UniMap cartography. It includes inbuilt maps for US inland lakes, rivers and coastal areas.  Maximum of 2500 waypoints, 50 routes, 50 Tracks and 20000 points can be stored in the GPS.

Display: 3.5 inch 320px x 240px colored
Technology: Side Imaging, Down Imaging, Dual Beam
Depth: 100 Feet Side and Down Imaging, 1500 feet Dual Beam
Power Transmitted: 500 Watts , 4000 Watts Peak to Peak
Battery Charging: 12VDc
Warranty: 1 year
Transducer : YES , 20 feet
Water Proof: YES
Salt water fishing: YES
GPS: YES
SD card: YES

Humminbird 409470-1 600 698ci 

best fish finder GPS combo under $500

5 inch VGA display with pixel matrix of 480 x 640. You must have noticed that by sharing pixel matrix again for each model shows how much important it is. The better the resolution the better will be image definition. You will be able to differentiate between two points on the screen. If the pixel ratio is low, structure and fish will get mixed up and it nearly becomes impossible to track fishes. In addition, better pixel ratio helps in discerning fish with different sizes as well. A bigger arc represent a bigger fish while an arc less snowflake is not fish it is imply a spot.

This fish finder provides Down Imaging, Side imaging and Dual Beam Sonar.  The cone angles are 20 degree, 60 degree, and 85 degree at -10db. The standard sonar frequency is 200/83/455 Khz. The maximum power output is 500 Watts while maximum power output peak to peak is 4000 watts. The scan able depth is 100 feet for side imaging and down imaging while for dual beam it is 1500 feet. Transducer is transom mounted. The temperature sensor is built in with in the transducer.
best fish finder gps combo under $500

Model comes with UniMap cartography if you want to use Navionics plus maps then the model supports them. However, Navionics Platinum+ maps are not supported by this unit. Like other model storage for waypoints is 2500, routes are 45, Tracks are 50 and Points are 20000. Humminbird Maping is also supported but like Navionics you would have to buy it separately. 1 MicroSD card is supported by this fish finder and it makes  into our list of best fishfinder gps combo under  $500.

Display: 5 inch 480px x 640px colored
Technology: Side Imaging, Down Imaging, Dual Beam
Depth: 100 Feet Side and Down Imaging, 1500 feet Dual Beam
Power: 500 Watts
Battery Charging: 12VDc
Transducer : YES , 20 feet
Water Proof: YES
Salt water fishing: YES
GPS: YES
SD card: YES

WHAT ARE THE TECHNOLOGIES IN BEST FISHFINDER GPS COMBO UNDER $500

To measure different fish finder performance its necessary that you understand what each technology means and what results it will offer. Once you understand and match your style with it then it will be easier for you to select the best fish finder. However, this is important to understand these technologies help you find fish they are not meant to catch fish. Catching is left on your experience and techniques.

DOWN IMAGING

Down imaging sends thin slices of sound waves underneath your boat. As the boat moves forward the slices get stacked up and on whole a bigger region in form of triangular cone is sent under vessel. Sound when interacts with objects underneath get reflected back and moves towards the boat. The echo received is analysed and represented in the form of visuals. The depth range of down imaging is not very high and works best for shallow or lake water fishing.

SIDE IMAGING

Like down imaging side imaging sends thin slices of sounds towards the left and right of the boat. Both side sounds waves are sent to cover 240 feet area. So in total 480 feet surround towards left + right is scanned specifically by Humminbird Side imaging. The results obtained are then compiled with digital signal processing. You can view what’s happening around you with side imaging. If you have both side and down imaging then it gives you great awareness. You can split up results for both on split screen on your fish finder.

DUAL BEAM SONAR

Dual Beam as the name indicates uses two frequencies beam. As mentioned in this post as well that larger frequencies like 200Khz are able to scan the shallow part of the water. They return back and the echoes are processed in form of images. But these high frequency waves are not able to go deeper into the depths of water. To gain access to more depth lower frequency typically 77 of 83Khz signals are sent down. These low frequency waves are able to scan more depth but as they go down they lose power every foot. So its very important to note what power the fish finder send these signals with. After every feet the power get dissipated and scanning gets blurrier.

CHIRP

CHIRP is alternate to DUAL BEAM SONAR, instead of sending just two frequencies to scan from shallow to deeper depth, CHIRP sends a band of frequencies from e.g. 28Khz to 210 Khz. These bands are usually divided into High Range , Medium Range, Low Range. A CHIRP model usually comes up with just two ranges.

The 28-65 Khz low range can go as deep as 10,000 feet which is massive for scanning whats underneath. Medium range 85Khz to 135Khz can scan upto 6500 feet while high range 130Khz to 210Khz can go 3300 feet deep. So according to your style, equipment, location you can select CHIRP range and scan the water.

VERDICT

So if you managed to read the entire article then you must have understood what you need. Its important to identify your style first. If you are once in a blue moon angler then you can choose a fish finder with in the range of $200.

However, if you love doing fishing and can afford to buy best fishfinder gps combo under $500 then there is a clear winner in this article that is RayMarine Dragonfly 4 Pro. But if you cannot compromise on user interface then the good news is the easier user experience providing company is enlisted in this list. The name is Humminbird and the model number is 409640-1 HELIX 5. It comes with dual beam – Side and Down imaging and is Helix Pro Series fish finder.

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