Lowrance Simrad-Yachting B&G

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Help / How To's


Shopping:  Items are listed by category.  To see all accessories in a category, click on the appropriate category link.  If the accessory you are looking for is not listed, use the Contact Us section to send an email with your inquiry or for price and availability. 

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Shipping:  Orders cannot be delivered to PO Boxes and we do not currently ship same day.  We will do our best to get your order out as quickly as possible.


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International:  Please be advised that for those customers who do not have a direct account/open terms with us, we can only accept orders from customers in the United States.  For all others please visit our dealer locator to find a dealer nearest you.


Returns:  If for any reason you are not pleased with your order, you may return it in new and unused condition within 30 days of purchase for refund (excluding shipping charges).  All returned merchandise is subject to a 15% restocking fee and videotapes, software, mapping cartridges and shipping are non-refundable.    Please click on Contact Us and select Returns-RMA on the dropdown list and be sure to include your original Order No.

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To access the Lowrance Knowledge Base, please click here. 


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Transducer Selection Guide

To select the transducer that's best suited to your needs, you need to consider the transducer's operating frequency, cone angle, and type of installation.

Frequency - Most of the sonar units that we sell accessories for operate at 200 kHz (kilohertz). Some models use 50 kHz. A few are dual frequency capable, meaning they can use both 50 and 200 kHz transducers. Typically, high frequency (200 kHz) sonar units provide the best resolution and definition of structure and targets. They excel at showing minute details of the underwater world. 50 kHz units have much greater depth penetration capability, but show less definition. 50 kHz transducers also usually have a much wider cone angle than 200 kHz transducers.

You must match the transducer's frequency to the sonar unit. For example, a 200 kHz sonar unit requires a 200 kHz transducer.

Cone Angle - A transducer's cone angle determines its coverage area of the underwater world. The wider the cone angle, the greater the area that's covered. We offer a variety of 200 kHz transducers with either a wide (20°) or narrow (12°) cone angle. The 50 kHz transducers come with a 35° cone angle. And the dual frequency transducers come with both a narrow (12°) 200 kHz and a 50 kHz cone angles.

Generally, use a wide cone angle for fishing shallow to medium depths. The narrow cone penetrates to deeper depths, but shows less fish and structure due to its narrow beam.

The depth capability of your sonar units depends on its transmitter power, receiver, sensitivity, frequency, transducer and transducer installation. Other things that effect depth capability are: water conditions and type, (all sonars will show deeper depth readings in fresh water than salt) and bottom conditions.

Types of Transducer Installation - Most of our permanent-mount transducers are designed for high-speed operations. For the best results, the transducer should be placed where a smooth, undisturbed flow of water will pass across the face of the transducer at all boat speeds. Read your transducer's owner's manual before installing the transducer!

Transom Mount - The transom-mount transducer is the most popular, and it's generally the easiest to install. The Skimmer® transducer design performs best when it is slightly below the boat's hull. A plastic transducer is recommended on aluminum or steel-hulled boats to avoid potential electrolysis problems.

Mounting the transducer on the transom is recommended for outboard and stern-drive (I/O) powered boats only. Transom mounting is ideal for high-speed operation and models with the "kick-up" feature will prevent damage if the transducer strikes an object.

Make certain that the chosen location doesn't interfere with the boat's trailer. DO NOT mount the transducer directly behind the ribs, or thru-hull fittings. Typically, on aluminum boats, mounting the transducer between two ribs works best. On all hulls, mount the transducer at least one foot away from the engine's lower unit. This helps to prevent air bubbles from the transducer interfering with the propeller.

Periodically wash the bottom of the transducer with soap and water to remove any oil film or growth that may collect. Oil and dirt reduce the transducer's sensitivity and can even prevent its operation.

Shoot-Thru-Hull Mount - In this installation, the transducer is bonded to the inside of the hull with epoxy. Ideally, the transducer is placed in the aft third of the hull close to the centerline. The signal "shoots through" the hull with some loss of signal strength. This installation must be made in an area of the hull that is made from solid fiberglass, with no air bubbles or separated layers. If the hull is of multi-layer or "sandwich" construction, you will have to remove the inner layer of fiberglass and the wood or foam core to expose the outer layer of the hull. This type of mount is recommended only with 200 kHz transducers.

Bolt-Thru-Hull Mount - In this type of installation, a hole is cut in the hull and the transducer is mounted through the hull by means of a threaded shaft and nut. If the boat hull has a dead rise higher than 10 degrees, fairing blocks made from wood or plastic must be fabricated so that the transducer will mount in a completely vertical position. The TH-FLW P5 model does not require a fairing block.

On in-boards, the transducer must be installed ahead of the propeller, shaft(s), and engine water intake(s).

If the boat's hull is made of steel or aluminum, use a plastic transducer to prevent electrolysis problems

Trolling Motor Mount - The PD-W "pod" transducer is designed for mounting on an electric trolling motor. It has two slots for a hose clamp (which must be purchased separately). Skimmer® transducers can also be mounted on a trolling motor using the TMB-S trolling motor bracket. It's curved to fit the contour of most electric trolling motors.