SKU: 89683824731

Airmar B75 High 20 Degree CHIRP Transducer 8-Pin f/Garmin

Sale price$418.50 Regular price$465.00
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Description

Airmar B75 High 20 Degree CHIRP Transducer 8-Pin f/GarminB75 High 20 Degree CHIRP Transducer 8 Pin for Garmin Airmars Broadband CHIRP transducers represent the next generation of technology that will allow fishermen to unlock secrets in fishfinding. Echosounder operation away from the traditional 50 kHz and 200 kHz has proven that different fish species return better signals at various frequencies. Airmars Broadband Transducers are capable of operating over a wide (or Broad) frequency band ranging from 25

B75 High 20 Degree CHIRP Transducer 8-Pin for Garmin

Airmars Broadband/CHIRP transducers represent the next generation of technology that will allow fishermen to unlock secrets in fishfinding. Echosounder operation away from the traditional 50 kHz and 200 kHz has proven that different fish species return better signals at various frequencies. Airmars Broadband Transducers are capable of operating over a wide (or Broad) frequency band ranging from 25 kHz to 60 kHz and from 130 kHz to 210 kHz.

Traditional fishfinders transmit a pulse at a single frequency (50 kHz or 200 kHz), which is often referred to as a tone burst. Better deep-water and bottom detection is obtained by transmitting a longer pulse, because the fishfinder is delivering more energy to the transducer. However, the drawback of a long pulse is that it provides reduced target resolution. For example, if a fishfinder transmits a pulse that is 500 microseconds in duration, it has a pulse length of 0.7 m (2.4). With a tone burst, no targets can be resolved that are closer to one another than the pulse length. Fish less than 0.7 m (2.4) apart, or less than 0.7 m (2.4) from the bottom, can not be detected. Fish schools will appear in this case as a single large mass, while fish close to the bottom will appear attached to the sea bed and will be difficult or impossible to detect.

With CHIRP, the transmission pulses are typically very long and may start at 40 kHz and end at 60 kHz. By comparing the shape of the stored transmission pulse with the received echoes from the transducer, it is possible to find echoes in the noise and precisely determine their range with astounding accuracy.

Using CHIRP, it is now possible to obtain:


  • Much greater range because very long pulses can be used.

  • Much better resolution because the sonar pulse is swept across a frequency band (from 40 kHz to 60 kHz, for example).

  • Enables targets to be precisely located within inches on the display using pattern-matching techniques.

  • Closely spaced fish and fish lying on the bottom can be accurately detected and displayed as distinct targets.

Because weak fish and bottom echoes can be resolved within the noise (the snow on a conventional fishfinder display), it is possible both to detect targets at far greater depths than before and track the bottom at higher boat speeds.

Features:


  • 12 m (40) cable

  • Depth and fast-response water-temperature sensor

  • Same elements and performance as the B765LH/LM offered in a low-profile housing

  • Bronze transducer housing

  • Boat Size: Up to 8 m (25)

  • Hull Type: Fiberglass or wood

Shipping Notes
  • Free Standard Shipping on $100+ Orders to the USA.
  • Except Preorder products are shipped in 48 hours.
  • Delivery to the USA:
  1. Standard Shipping : 3-10 business days
  • If time is of the essence, please consider selecting expedited delivery for faster service.
Exchange/Return Notes
  • We offer a 30-day return/exchange service after receiving.
  • Final sale items are not eligible for returns or exchanges.
  • To process your return/exchange, please contact us at [email protected]
  • Please click here for more details>>> Return & Exchange Policy
SKU: 89683824731

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Patricia Hull
Draper, US
★★★★★ 3
Poor quality
Size: S, Color: Brown, Size: S, Color: Brown
Hoped that this would be better than it was. The material is cheap and wants to roll in at the zipper making it difficult to close. It does offer lots of room and can be worn as a cross body also.
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Reviewed in the United States on January 9, 2026
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Mama4Life
Battle Creek, US
★★★★★ 5
CUTE and perfect for everyday use!
Size: M, Color: Brown
Received as a Christmas gift from my family. Super Cute! Made from quality material, Fits well as cross body or bum bag, fits everyday essentials like wallet, sunglasses, keys some hand sanitizer and lip gloss. Travel friendly, small enough to carry and tote away and convenient to use every day. Good price for the quality you receive.
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Reviewed in the United States on April 6, 2026
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katie clarkin
Whiting, US
★★★★★ 5
Super functional
Lots of space and very cute!!!
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Reviewed in the United States on May 8, 2026
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Suzanne P.
Whiting, US
★★★★★ 5
Professional and streamlined leather backpack
I’ve had a dozen or so backpacks to use for work (corporate environment), and I really love this one. The leather is of high quality, plenty of pockets, strong zippers, straps, and grab handle, and provides a polished, professional, well-put together look. In the rear, zippered compartment, I have a 15-inch HP laptop, an iPad, and a 1/2 inch notebook. The main compartment is spacious and holds chargers for each device plus a lot of other miscellaneous items. There are two front, zippered compartments (one is intentionally “hidden” behind the other) that offer a secure and accessible way to access smaller items like pens, air pods, keys, etc. Great purchase, and I would definitely buy it again.
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Reviewed in the United States on July 9, 2025
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Chelsea Weiman
Lake Worth, US
★★★★★ 5
Love it!!!
Color: Mocha Brown
I bought it because it's the perfect size for carry-on luggage on the plane, and it's big enough to carry several things. Excellent quality for the price. It looks super cute and goes with everything.
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Reviewed in the United States on December 12, 2025

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