571 HD DI Portable

The Humminbird 571 HD DI Portable is one of the latest models in the Humminbird 500 series. So far, it’s one of the best monochrome units with Down Imaging that you can have.

It features a 5-inch diagonal, 16 LvL Grayscale screen, 640X320 pixel resolution. Even though it’s black and white, it provides excellent, crystal-clear images, with very little noise, making it very easy to distinguish between structures, vegetation and fish.

This unit is equipped with a sensitive sonar, Dual Beam Plus, quite reliable up to 600ft. Down Imaging works great in waters up to 350ft. The transducer mounts via a suction cup so you don’t have to drill into your boat to attach it with screws. This makes it a great choice for rental boats.

Although is doesn’t feature and GPS or chartplotting features, this unit has all the fish finding options available. Therefore, you can scan the water in Fish ID mode, or you can view the SwitchFire and Down s
Imaging returns in split screen.

The 571 HD DI Portable comes with a portable case. Also, in the box includes a 12v battery and charger.

PiranhaMax 165 Portable

This Piranhamax model comes to replace the 160 Portable. Although the two units are quite similar, there are a few differences between them.

First of all, the Humminbird Piranhamax 165 PT has a better display than the older model, featuring a 240 x 160 pixel resolution, on a 4-inch diagonal screen, 8 level grayscale. This new screen provides a better, clearer image.

On the other hand, the 165 Portable does not have a dual beam sonar. It’s has only single beam sonar capabilities, projecting one beam of 28° (200kHz). Even though it’s specified to be reliable in waters up to 600 ft, I would recommend it only for shallow water fish tracking, up to 250-300 ft.

The transducer is to be fixed with a suction cup, therefore you don’t have to drill any holes in a boat, which makes it a perfect unit for lake or river in-land waters, when you have to use a rental boat.

Just like any other portable fish finder from Humminbird, this unit comes to with a protective, carrying case. The box also contains the fish finder’s charger and a 7AH battery.

570 Portable

The Hummingbird Fish Finder 570 Portable is quite a basic fish finder, but it’s very useful for anglers that can’t use their boat for any fishing trip.

This Humminbird fish finder doesn’t have any fancy GPS features, nor it has Down Imaging and Side Imaging. However, is quite a reliable tool for tracking fish, providing any angler with accurate returns about the bottom, fish, sunken trees, everything that passes under the boat, measuring depth and water temperature. All in all this tool will tell you about anything that you should know about the underwater environment, to improve your angling experience.

It’s equipped with a grayscale 12 level screen, 5-inch diagonal, 640V x 320H high pixel resolution. It has a Dual Beam sonar, which allows you to filter your view from a 20° more accurate beam, to a wider view, from a 60° sonar beam. Since it’s not a Dual Beam Plus sonar, unfortunately you won’t be able to observe both the 20° and 60° views in split screen. But anyway, you will be able to see where the fish are, especially if you use the fish ID option. Although this fish finder is designed to be functional for waters up to 800 ft. deep, I wouldn’t recommend it for deep water fishing. To be sure you will benefit from great results in deep waters, one of the superior Hummingbird Fish Finders is more indicated, like the 898c SI Combo, or the 998c SI Combo.

In general, you should know that the accuracy of your fish finder’s returns, depends on the water and weather conditions, boat speed and the bottom hardness.

The Hummingbird Fish Finder 570 Portable has a PTP power output of 2000 Watts. It comes along with an AGM battery that lasts for quite a few fishing trips, and its charger of course. However, even if the battery will last for quite a long while, it’s a good idea to recharge it before any fishing expedition. The price of this Humminbird fish finder also includes a portable case, a very useful accessory for a portable device like this model.

570 DI Portable

The Hummingbird Fish Finder 570 DI Portable, is quite a flexible, proficient and afforadble unit for what it can do. Although it doesn’t feature any GPS or chartplotting options, it’s a great device for finding fish, measuring depth, speed and water temperature.

Equipped with a 12 level grayscale display, 5″ diagonal, 640V x 320H pixel resolution, this unit will provide you with an excellent view of what’s underneath the boat. Even if it’s black and white, the images in Down Imaging are pretty clear and accurate. You will understand immediately where the fish are in relation to the boat, and make a good idea where to throw your lines. Plus, you can observe the bottom and the underwater environment in split screen, observing both the Switchfire and Down Imaging returns on your screen.

The sonar capability is 800/455 kHz for the Down Imaging option, and 455/200 kHz for the normal down beam sonar. In other words you can operate your Humminbird 570 DI Portable at two frequencies for Down Imaging: at 455 kHz to cover a wider area, with a 75° beam, or at 800 kHz, for a more accurate return caught by a 45° beam. The transducer of the 570 DI portable also uses two conical beams for 2D traditional imaging. With the 200 kHz you will obtain a view in a 25° beam and with the 455 kHz, a more focused image in a 16° beam.

This Humminbird unit has a 4000 Watts power PTP power output. It’s designed to be reliable for depths up to 500 feet in normal imaging. As when it comes to Down Imaging, you will benefit from reliable returns in waters up to 250 ft. deep.

The package contains a portable case and an AGM battery with its charger.

All in all, this is one of the best portable fish finders from Humminbird. It’s great to have especially if you’re not using your own boat on every fishing trip. You can take it along and install it quickly on your friend’s boat or on a rental boat, without drilling holes in it. The only downside about it is that sometimes the screen might be difficult to read in direct sunlight. In a case like this you should use something to create a bit of shade for the screen.