CHIRP Transducers
CHIRP transducers were first introduced in 2012 and are now available in a wide range of frequencies and mounting options. They provide a major step forward in underwater image resolution.
Conventional transducers operate at one or two frequencies, typically 50kHz and 200kHz. CHIRP transducers sweep across a range of frequencies to give better coverage and to see the fish that a conventional model might miss. They are available in either single-band or dual-band models.
Airmar makes CHIRP transducers for most major fishfinder and sounder brands including Garmin, Furuno, Lowrance, Raymarine and Simrad. Garmin and Raymarine also make their own transducers for use with their equipment.
The table at the bottom of this page contains a summary of all available CHIRP transducers.
AIRMAR SINGLE-BAND TRANSDUCERS
Single-band transducers operate in only one of the three possible CHIRP frequency bands: the High band (H), the Medium band (M) or the Low band (L).
Many CHIRP sounders and fishfinders can only handle single-band transducers.
Check your sounder or fishfinder specifications to see whether it is single-band or dual-band and choose a matching transducer.
AIRMAR DUAL-BAND TRANSDUCERS
Dual-band transducers operate in two CHIRP frequency bands simultaneously: typically the Low & Medium bands (LM) or the Low & High bands (LH).
Dual-band CHIRP sounders and fishfinders are usually higher-priced than single-band models.
Check your sounder or fishfinder specifications to see whether it is single-band or dual-band and choose a matching transducer.
GARMIN TRANSDUCERS
Garmin makes a wide range of single-band and dual-band transducers using CHIRP technology in the low, medium or high bands. They also make CHIRP transducers that use their proprietary DownVü and SideVü technology.
These transducers are for use with Garmin fishfinders and sounders only.
RAYMARINE TRANSDUCERS
Raymarine makes a selection of combined DownVision CHIRP and standard CHIRP transducers.
These transducers are for use with Raymarine fishfinders and sounders only.
Complete CHIRP Transducer List
Airmar Single-Band
| Model | Power | Elements | Frequencies | Housing | Mounting |
|---|---|---|---|---|---|
| B75/SS75 | 600W | 1 | Low, Medium, or High | Bronze or Stainless-Steel | Low-Profile Thru-Hull, Tilted |
| B150 | 300W | 1 | Medium | Bronze | Low-Profile Thru-Hull, Tilted |
| B175/SS175 | 1kW | 1 | Low, Medium, or High | Bronze or Stainless Steel | Low-Profile Thru-Hull, Tilted |
| B285 | 1kW | 1 | Medium, or High with Wide Beam | Bronze | Thru-Hull with Fairing |
| B785 | 600W | 1 | Medium | Bronze | Thru-Hull with Fairing |
| M175 | 1kW | N/A | Medium | Urethane | In-Hull |
| M285 | 1kW | N/A | High Widebeam | Urethane | In-Hull |
| P75 | 600W | 1 | Medium | Urethane | In-Hull |
| P95 | 300W | 1 | Medium | Urethane | In-Hull |
| P155 | 300W | 1 | Medium | Urethane | In-Hull |
| TM150 | 300W | 1 | Medium | Urethane | Transom-Mount |
| TM185 | 1kW | 1 | Medium, or High with Wide Beam | Urethane | Transom-Mount |
Airmar Dual-Band
| Model | Power | Elements | Frequencies | Housing | Mounting |
|---|---|---|---|---|---|
| B265 | 1kW | 8 | Low & Medium, or Low & High | Bronze | Thru-Hull with Fairing |
| B275 | 1kW | 8 | Low & High with Wide Beam | Bronze | Thru-Hull with Fairing |
| B765 | 600W | 2 | Low & Medium, or Low & High | Bronze | Thru-Hull with Fairing |
| CM265 | 1kW | 8 | Low & Medium, or Low & High | Urethane | Wet Box or Tank |
| CM275 | 1kW | 8 | Low & High with Wide Beam | Urethane | Wet Box or Tank |
| M265 | 1kW | 8 | Low & Medium, or Low & High | Fiberglass | In-Hull |
| M422 | 1.5kW | N/A | Low & High | Urethane | In-Hull |
| P50 | 600W | N/A | Low & High | Urethane | In-Hull |
| P83 | 300W | N/A | Medium & High | Urethane | In-Hull |
| TM265 | 1kW | 8 | Low & Medium, or Low & High | Urethane | Transom-Mount |
| TM275 | 1kW | 8 | Low & High with Wide Beam | Urethane | Transom-Mount |
| PM265 | 1kW | 8 | Low & Medium, or Low & High | Urethane | Pocket or Keel |
| PM275 | 1kW | 8 | Low & High with Wide Beam | Urethane | Pocket or Keel |
Airmar Dual-Band High-Performance
| Model | Power | Elements | Frequencies | Housing | Mounting |
|---|---|---|---|---|---|
| PM111 | 2kW | 16 | Low & Medium, Low & High, or Low & High with Wide Beam | Urethane | Pocket or Keel |
| PM411 | 2kW | 16 | Low & Medium with Ultra-Wide Beam | Urethane | External |
| R109 | 2kW | 16 | Low & Medium, Low & High, or Low & High with Wide Beam | Urethane | External |
| R111 | 2kW | 16 | Low & Medium, or Low & High | Fiberglass | In-Hull |
| R409 | 2kW | 16 | Low & Medium with Ultra-Wide Beam | Urethane | External |
| CM599 | 2-3kW | 25 | Low & Medium, Low & High, or Low & High with Wide Beam | Urethane | Pocket or Keel |
| R509 | 2-3kW | 25 | Low & Medium, Low & High, or Low & High with Wide Beam | Urethane | External |
| R599 | 2-3kW | 25 | Low & Medium, or Low & High | Fiberglass | In-Hull |
Garmin Transducers
| Model | DownVü CHIRP | SideVü CHIRP | Conventional | Standard CHIRP | Mounting | Connector |
|---|---|---|---|---|---|---|
| GT8HW-IF | - | - | - | High | Ice Fishing | 4-Pin |
| GT8HW-IH | - | - | - | High | In-Hull | Blue 8-Pin |
| GT8HW-TM | - | - | - | High | Transom or Trolling | Blue 8-Pin |
| GT15M-TM | - | - | - | Medium | Transom | Blue 8-Pin |
| GT20-TM | ✔ | - | 77/200kHz | - | Transom | Blue 8-Pin |
| GT21-TH | ✔ | - | 50/200kHz | - | Thru-Hull | Blue 8-Pin |
| GT21-TM | ✔ | - | 50/200kHz | - | Transom | Blue 8-Pin |
| GT22HW-TM | ✔ | - | - | High | Transom | Blue 8-Pin |
| GT23M-TH | ✔ | - | - | Medium | Thru-Hull | Blue 8-Pin |
| GT23M-TM | ✔ | - | - | Medium | Transom | Blue 8-Pin |
| GT30-TH | ✔ | ✔ | - | - | Thru-Hull | Orange 12-Pin |
| GT30-THP | ✔ | ✔ | - | - | Thru-Hull Pair | Orange 12-Pin |
| GT30-TM | ✔ | ✔ | - | - | Transom | Orange 12-Pin |
| GT40-TM | ✔ | ✔ | 77/200kHz | - | Transom | Orange 12-Pin |
| GT41-TH | ✔ | ✔ | 50/200kHz | - | Thru-Hull | Orange 12-Pin |
| GT41-THP | ✔ | ✔ | 50/200kHz | - | Thru-Hull Pair | Orange 12-Pin |
| GT41-TM | ✔ | ✔ | 50/200kHz | - | Transom | Orange 12-Pin |
| GT50M-TH | ✔ | ✔ | - | Medium | Thru-Hull | Orange 12-Pin |
| GT50M-THP | ✔ | ✔ | - | Medium | Thru-Hull Pair | Orange 12-Pin |
| GT50M-TM | ✔ | ✔ | - | Medium | Transom | Orange 12-Pin |
| GT51M-TH | ✔ | ✔ | - | Medium | Thru-Hull | Orange 12-Pin |
| GT51M-THP | ✔ | ✔ | - | Medium | Thru-Hull Pair | Orange 12-Pin |
| GT51M-TM | ✔ | ✔ | - | Medium | Transom | Orange 12-Pin |
| GT52HW-TM | ✔ | ✔ | - | High | Transom | Orange 12-Pin |
Raymarine
| Model | DownVision CHIRP | Standard CHIRP | Housing | Mounting | Compatibility |
|---|---|---|---|---|---|
| CPT-60 | ✔ | ✔ | Urethane | Transom | Dragonfly |
| CPT-70 | ✔ | ✔ | Urethane | Thru-Hull with Fairing | Dragonfly |
| CPT-80 | ✔ | ✔ | Bronze | Thru-Hull with Fairing | Dragonfly |
| CPT-100 | ✔ | ✔ | Urethane | Transom | DownVision displays |
| CPT-110 | ✔ | ✔ | Urethane | Thru-Hull with Fairing | Downvision displays |
| CPT-120 | ✔ | ✔ | Bronze | Thru-Hull with Fairing | DownVision displays |
| CPT-200 | ✔ | ✔ | Urethane/Stainless Steel | Transom | SideVision displays |
CHIRP Marine is an independent source of information about CHIRP technology in transducers, sounders and fishfinders.
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