Choosing the right GARMIN Transducer

Salt, Fresh, Deep, Shallow, Kayak, Trolling, Thru hull, Transom. With so… many different options, choosing the right transducer can be down right daunting! So…  it’s a must to match the transducer to your device’s sonar correctly the first time.

by | Last updated: Feb 14, 2018


To start, lets make sure we know what unit we are buying a transducer to pair with, and what type of sonar technology we plan to use. Match the unit with the transducer and the technology. Here’s a quick look at some of the different types of current sounder technology and types of transducers available.

CHIRP SONAR TECHNOLOGY – is one of the most sophisticated sonar technologies available for fishing and boating today. It truly provides amazingly clear target separation and definition because it puts even more energy onto a target than traditional sonar.

STANDARD SONAR – sends one single frequency at a time. Since the only feedback is from this one single frequency, there is limited information to work with, restricting the clarity and resolution available with standard sonar. 

Choosing the Right GARMIN Transducer

 GARMIN CHIRP SONAR – Instead of sending just one single frequency, Garmin CHIRP sonar sends a continuous sweep of frequencies within a range from low to high and then interprets each frequency individulally upon its return.

Since this continuous sweep of frequencies provides a much wider range of information, Garmin CHIRP sonar is able to create a much clearer, higher resolution image with greater target separation and crisper fish arches.

For example, 80-160kHz is sweeping through the range from 80kHz all the way up to 160kHz and hitting every single frequency in between.

CHIRP TRANSDUCER – Picking the right transducer is very important to get the most Garmin CHIRP sonar. These transducers have elements that are tuned to specific frequency ranges and limit interference while transmitting and receiving data.

Choose the right frequency range for the water conditions you boat or fish in. Higher frequencies use a narrow beam widths, and are better for high-speed operation and rough sea conditions. Bottom definition and thermocline definition can be better when using a higher frequency. 

Lower frequencies use wider beam widths, which can let the fisherman see more targets, but could also generate more surface noise and reduce bottom signal continuity during rough sea conditions. Wider beam widths generate larger arches for fish target returns, making them ideal for locating fish. 

Wider beam widths also perform better in deep water, because the lower frequency has better deep water penetration. 

 

CLEARVÜ / SIDEVÜ SCANNING SONAR – ClearVü scanning sonar gives you an ultra clear sonar picture of objects, structure and fish that pass around your boat while SideVü scanning sonar shows fish and structure that is off to the sides of your boat.

ClearVü/SideVü scanning sonar with CHIRP technology is also available for some compatible chartplotter/sonar combos.  

 


 TYPES OF MOUNTS

In Hull – An in-hull transducer is installed inside a boat hull against the bottom and sends its signal through the hull.

PROS

  • No need to drill through the vessel, no drag.
  • Boat can be trailered without damaging transducer
  • No exposure to marine growth
  • Can be installed and serviced with vessel in water
  • Gives great high-speed performance as long as water flow below the transducer is “clean” (no turbulence)
  • Works with any engine type: inboard, outboard, and I/O when installed over solid fiberglass
  • Performs well on both power and sailboats

CONS

  • Not recommended for metal, wood, and cored fiberglass hulls
  • Lose signal by transmitting through hull

Kayak In-Hull – This mount attaches to the inside of a Kayak, against the bottom and sends its signal though the hull.

Kayak In Hull Transducer

PROS

  • No need to drill into the vessel
  • No drag, protects transducer from rocks when launching
  • Will not catch on weeds or marine vegetation
  • Easily remove the transducer

CONS

  • Not recommended for metal or wooden vessels
  • Slight loss of signal by transmitting through hull
  • Recommends flat section for best sealing against boat

Trolling Motor – Attaches either to the shaft or below the body of a trolling motor.

GARMIN Trolling Motor TransducerPROS

  • Provides sonar images from the bow, right below where you are fishing, instead of further astern on the hull or at the transom
  • Easy to install and remove, no need to drill into hull
  • Stores with trolling motor when lifted out of water

CONS

  • Sonar image corresponds to position of trolling motor, may not be optimum direction in currents or windy conditions
  • Hangs low in the water, if you don’t pay attention to depth, it’s vulnerable to hitting submerged objects

Thru-Hull : Thru-hull transducers, as their name implies, are installed in a hole drilled thru the hull.

GARMIN Thru Hull Transducer

PROS

  • Works with any engine type: inboard, outboard, or I/O, twins or single
  • Works for power and sailboats alike
  • Thru-hull transducers can be found for every hull material

“Flush” –  thru-hull transducers sit flush or nearly flush with the hull. Recommended for smaller boats with a minimum deadrise angle. They are often installed on sailing vessels because they produce minimal drag.

“External” – thru-hull transducers extend beyond the hull’s surface and usually require a fairing to aim the sound beam vertically. These are designed

for larger untrailered vessels. Installed with a High-Performance Fairing, the transducer face is flush with the surface of the fairing and parallel to the

waterline, resulting in a truly vertical beam, putting maximum energy on the target.

These are mounted in “clean water” forward of the propellers and running gear and  produces the most effective signal return, since nothing on the vessel interferes with the transducer’s active face.


When to Use a Thru-Hull Pair –  A Thru-Hull pair is recommended when mounting a SideVu transducer in a location that has a dead-rise greater than 5 degrees.

When to use a Pair of Transducers


Garmin Transducer Specs & Compatibility

GARMIN / Chirp Traditional Transducers

Scroll Right - Below
Model #     PictureTransducer~Description                                                                     Garmin~P/N  Freq(kHz)Power(rms)Beam~width (º) LF/HF (-3dB)Max DepthDepth
Speed
Temp
# of PinsCable Length (ft.)Deadrise
Transom~Angles
>>>STRIKER CV~SERIESSTRIKER SV~SERIESECHOMAP CHIRP CV~SERIES ECHOMAP CHIRP SV~SERIES  GPSMAP XSV~SERIES & GSD25GPSMAP XS~SERIESGCV 10
GT8HW-TMHigh Wide Beam CHIRP perfect for displaying large, clear, crisp fish arches that the Inland/Nearshore fishermen is looking for. Contains fast response water temperature sensor.010-12401-00CHIRP/High/Wide (145-230kHz)250W24-16800 ft. freshwaterD/T8- pin200-70° transomC* (010-11947-00)C* (010-11947-00)C* (010-11947-00)C* (010-12122-10)RR
GT8HW-IH Ideal for boats traveling at high speeds that want to install the transducer inside a the hull and not on the transom where cavitation could cause issues.010-12401-10CHIRP/High/Wide (145-230kHz) 250W24-16800 ft. freshwaterD8-pin200- 5° deadriseC* (010-11947-00)C* (010-11947-00)C* (010-11947-00)C* (010-12122-10)RR
GT8HW-IF Multi-beamwidth CHIRP transducer perfect for Ice fisherman. Wide beam angles provide coverages needed under the ice. 010-12401-20CHIRP/High/Wide (145-230kHz)250W24-16800 ft. freshwaterD4- pin8NARRC* (010-11948-00)C* (010-11948-00) & (010-12122-10)C* (010-11948-00)NA
GT15M-TM Perfect for fishermen who want clear bottom definition as well as crisp, clear fish arches with excellent target separation. Features mid-band CHIRP and can be mounted on the transom.010-12402-10CHIRP/Mid/Band (85-165kHz)600W24-131900 ft freshwaterD/T8-pin300-70° transomC* (010-11947-00)C* (010-11947-00)C* (010-11947-00)C* (010-12122-10)RR
GT15M-TH This Mid-band CHIRP raditional Transducer is ideal for the fisherman who wants an affordable Stainless Steel Thru- Hull transducer. Provides crisp, clear fish arches with excellent target separation.010-12402-20CHIRP/Mid/Band (85-165 kHz)600W24-131900 ft freshwaterD/T8-pin500- 25° deadriseC* (010-11947-00)C* (010-11947-00)C* (010-11947-00)C* (010-12122-10)RR
GT15M-IH Mid Band CHIRP, in-hull mounting for high speed boats. Maximum fiberglass thickness should no more than 5/8” thick010-12402-00CHIRP/Mid/Band (85-165 kHz)600W24-131900 ft freshwaterD8-pin200- 25° deadriseC* (010-11947-00)C* (010-11947-00)C* (010-11947-00)C*RR
C=Compatible
R=Recommended *=With/Adapter cable

CHIRP CLEARVÜ / CHIRP SIDEVÜ

Scroll Right - Below
Model #     PictureTransducer~Description                                                                     Garmin~P/NFreq(kHz)        Power(rms)Beam~width (º)
LF/HF (-3dB)
Max DepthDepth
Speed
Temp
# of PinsCable Length (ft.)Deadrise
Transom~Angles
>>>STRIKER CV~SERIESSTRIKER SV~SERIESECHOMAP CHIRP CV~SERIES ECHOMAP CHIRP SV~SERIES  GPSMAP XSV~SERIES & GSD25GPSMAP XS~SERIESGCV 10
GT30-TMSideVü/ClearVü optimized for clearer image at shallow depths. Provides picture-like images of what is below your boat. Has a fast response water temperature sensor.010-01961-00ClearVü/SideVü/CHIRP
455 khz (425-485)
800 khz (790-850)
ClearVü/SideVü
500W
ClearVü
1.4x53@455
0.8x30@800
SideVü
1.1x53@455
0.7x30@800
ClearVü~750ft.
SideVü~500ft.
D/T12200-70° transomCCCR
GT30-TH SideVü/ClearVü optimized for clearer image at shallow depths. Provides picture-like images of what is below your boat. Has a fast response water temperature sensor.
010-01961-10ClearVü/SideVü/CHIRP
455 khz (425-485)
800 khz (790-850)
ClearVü/SideVü
500W
1.4x53@455
0.8x30@800
SideVü
1.1x53@455
0.7x30@800
ClearVü~750ft.
SideVü~500ft.
D/T125ft.+30ft.ext.Up to 25° deadriseCCCR
GT30-THPSideVü/ClearVü optimized for clearer image at shallow depths. Provides picture-like images of what is below your boat. Has a fast response water temperature sensor.010-01961-11 ClearVü/SideVü/CHIRP
455 khz (425-485)
800 khz (790-850)
ClearVü/SideVü
500W
ClearVü
1.4x53@455
0.8x30@800
SideVü
1.1x53@455
0.7x30@800
ClearVü~750ft.
SideVü~500ft.
D/T125ft.+30ft.ext.Up to 25° deadriseCCCR
C=Compatible
R=Recommended *=With/Adapter cable

PANOPTIX

Scroll Right - Below
Model #     PictureTransducer~Description                                                                     Garmin~P/N   Freq(kHz)        Power(rms)Beam~width (º)
LF/HF (-3dB)
Max DepthDepth
Speed
Temp
# of PinsCable Length (ft.)Deadrise
Transom~Angles
>>>STRIKER CV~SERIESSTRIKER SV~SERIESECHOMAP CHIRP CV~SERIES ECHOMAP CHIRP SV~SERIES  GPSMAP XSV~SERIES & GSD25GPSMAP XS~SERIESGCV 10
PS21-TR~Forward/Looking
Trolling~Mount
Multi-beam forward looking sonar with 2D live to view fish, lures, and structure. Includes pitch and roll compensation for stable images. Optomized small size and weight make it ideal for mounting on the
shaft or barrel of the trolling motor.
010-01588-00417 kHz144W120°/ 120° 300ft.D/TEthernet13Trolling motor Shaft
or Barrel mount
R~(7cv only)RRR
PS21-TM~Forward/Looking
Transom~Mount
Multi-beam forward looking sonar with FrontVü for collision avoidance and 2D live to view fish, lures, and structure. Includes pitch and roll compensation for stable images.010-01588-01417 kHz144W120°/ 120° 300ft.D/TEthernet130-70° transomR~(7cv only)RRR
PS22-TR~Forward/Looking
Trolling~Mount
Multi-beam forward and down looking sonar with 2D live to view fish, lures, and structure. Includes pitch and roll compensation for stable images. Optomized small size and weight make it ideal for mounting on the shaft or barrel of the trolling motor.010-01945-00417 kHz144W120°/ 120° 300ft.D/TEthernet13Trolling motor shaft
or Barrel mount
R~(7cv only)RRR
PS31-Forward/Looking
Transom/Trolling~Mount
Multi-beam forward looking sonar with 2D live and 3D scan to view fish, lures, and structure. Includes pitch and roll compensation for stable images.010-01284-01417 kHz144W120°/ 120° 300ft.D/TEthernet300-70° transomR~(7cv only)RRR
PS30-Down/Looking
Transom/Trolling~Mount
Multi-beam down looking sonar with 2D live and 3D scan to view fish, lures, and structure. Includes pitch and roll compensation for stable images.010-01284-00417 kHz144W120°/ 120° 300ft.D/TEthernet300-70° transomR~(7cv only)RRR
PS51-TH-Forward/Looking
ThruHull
Thru-hull transducer with premium FrontVü forward-looking sonar helps you avoid running aground by displaying the bottom ahead of your boat in real time.010-01753-00417 kHz144WNA300ft.D/TEthernet6Up to 25° deadriseR~(7cv only)RRR
PS60-Down/Looking
ThruHull
Thru-Hull mounting, multi-beam down looking sonar with 2D live and 3D scan to view fish, lures, and structure. Includes pitch and roll compensation for stable images.010-01406-00417 kHz144W120°/ 120° 300ft.D/TEthernet30Up to 25° deadriseC=Compatible
R=Recommended *=With/Adapter cable

THRU-HULL TRADITIONAL

Scroll Right - Below
Model #     PictureTransducer~Description                                                                     Garmin~P/N   Freq(kHz)        Power(rms)Beam~width (º)
LF/HF (-3dB)
Max DepthDepth
Speed
Temp
# of PinsCable Length (ft.)Deadrise
Transom~Angles
>>>STRIKER CV~SERIESSTRIKER SV~SERIESECHOMAP CHIRP CV~SERIES ECHOMAP CHIRP SV~SERIES  GPSMAP XSV~SERIES & GSD25GPSMAP XS~SERIESGCV 10GSD 24GSD 26
Airmar P19
with 12° tilt
Provides excellent performance at high speeds. Excellent on fiberglass and metal hulls. Do not use on wood hulls.010-10218-2177/200500W45/15900ftD/T8308-15° deadriseC – 7cv
C* – 4cv & 5cv
(010-11947-00
C*
(010-12122-10)
CCC
Airmar P19
with 20° tilt
010-10218-2277/200500W45/15900ftD/T83016-24° deadriseC – 7cv
C* – 4cv & 5cv
(010-11947-00)
C*
(010-12122-10)
CCC
Airmar B619
with 12° tilt
Provides excellent performance at high speeds. Excellent on fiberglass and wood hulls. Do not use on metal hulls.010-10217-2177/200500W45/15900ftD/T8308-15° deadriseC – 7cv
C* – 4cv & 5cv
(010-11947-00)
C*
(010-12122-10)
CCC
Airmar B619
with 20° tilt
010-10271-2277/200500W45/15900ftD/T83016-24° deadriseC – 7cv
C* – 4cv & 5cv
(010-11947-00)
C*
(010-12122-10)
CCC
Airmar P319
with temp
Provides excellent performance at high speeds. Excellent on fiberglass and metal hulls. Do not use on wood hulls.010-10194-2150/200600W45/12800-1200ftD/T8390-7° deadriseC – 7cv
C* – 4cv & 5cv
(010-11947-00)
C*
(010-12122-10)
CCC
Airmar B60
with 20° tilt
Entry level, bronze. Excellent for fiberglass and wood hulls. Does not require a fairing.010-10982-20 50/200600W45/12800-1200ftD/T83916-24° deadriseC – 7cv
C* – 4cv & 5cv
(010-11947-00)
C*
(010-12122-10)
CCC
Airmar B60
with 12° tilt
010-10982-2150/200600W45/12800-1200ftD/T8398-15° deadriseC – 7cv
C* – 4cv & 5cv
(010-11947-00)
C*
(010-12122-10)
CCC
Airmar SS60
with 0° tilt
Entry level, stainless steel. Excellent for aluminum boats. Does not require a fairing010-11868-2050/200600W45/12800-1200ftD/T8390-7° deadriseC – 7cv
C* – 4cv & 5cv
(010-11947-00)
C*
(010-12122-10)
CCC
Airmar SS60
with 12° tilt
010-11868-2150/200600W45/12800-1200ftD/T8398-15° deadriseC – 7cv
C* – 4cv & 5cv
(010-11947-00)
C*
(010-12122-10)
CCC
Airmar SS60
with 20° tilt
010-11868-2250/200600W45/12800-1200ftD/T83916-24° deadriseC – 7cv
C* – 4cv & 5cv
(010-11947-00)
C*
(010-12122-10)
CCC
Airmar B164
with 20° tilt
Step up to 1kW without a fairing! Flushmounted bronze housing protrudes less than 1/4” outside hull and can sit on trailer rollers/bunks without damage.010-11010-2050/2001kW22x20/
6x6
1200-1800ftD/T83916-24° deadriseCCC
Airmar B164
with 12° tilt
010-11010-0150/2001kW22x20/
6x6
1200-1800ftD/T8398-15° deadriseCCC
Airmar B117
with temp
Provides excellent performance at high speeds. Excellent on fiberglass and wood hulls. Do not use on metal hulls.010-10182-2150/200600W45/12800-1200ftD/T8390-7° deadriseC – 7cv
C* – 4cv & 5cv
(010-11947-00)
C*
(010-12122-10)
CCC
Airmar B744V
Triducer
Only thru-hull transducer that offers depth, speed, and temp in one package.010-10183-2250/200600W45/12800-1200ftD/T8390-24° deadriseCCC
Airmar
B744VL
Long stem
Extended stem length version of B744V for steep deadrise vessels or thick, cored hulls.010-10193-2250/200600W45/12800-1200ftD/T8390-24° deadriseCCC
Airmar B258Mid-range 1kW performance with a narrow beam for good deep water capability and bottom definition.010-10703-2050/2001kW14x23/
3x5
1500-2200ftD/T8390-26° deadriseCCC
Airmar B260Popular narrow beam, 1kW thru-hull transducer with great deep water performance.010-10640-2050/2001kW19/61800-2500ftD/T8390-20° deadrise CCC
C=Compatible R=Recommended*=With/Adapter cable
Used Marine Electronics For Sale

☸ Crew

We review & list... a full range of marine electronics gear. Looking to outfit, upgrade or replace your NAV gear? Start Here 

☸ Latest Reviews