Skip to content Skip to navigation menu

RAYMARINE a78 Display with CHIRP/RD418D Digital Radome Value Pack, Non-WiFi

Model # 14907851Mfg # T70205


Customer Reviews
In stock online.

Extend your warranty protection with PLUS plan!

Product Description

Purchase our Value Pack and combine the a78 with the 18" RD418D Digital Radome to outfit your vessel with a complete system at a value price.

The a78 display features Raymarine’s exclusive CHIRP DownVision™ for photo realistic images of structure and fish targets, and includes the CPT-100 transom mount dual-element CHIRP transducer. It throws a 25° conical beam, and also adds DownVision, projecting a beam that is wide (port and starboard) and thin (fore and aft), with outstanding depth performance of up to 600'.

This a78 system pack includes preloaded Navionics Gold charts on a microSD card with US/Canadian Coastal, US Inland and Bahamas coverage. If desired, you can upgrade to 3D charting and satellite photos with Navionics Platinum Plus charts. The a78 can be expanded to include satellite weather, AIS, thermal imaging and much, much more. The a78 features a 7.0” diagonal  LED-backlit LCD display that is optically bonded to its touchscreen for superior visibility day and night.

This system pack that includes the a78, Gold Navionics Cartography, CPT-100 CHIRP Transom Transducer and RD418D Digital Radome.

  • Display Type: LED backlit, sunlight-viewable touchscreen
  • Screen Size: 7" diagonal
  • Screen Resolution:  800 x 480
  • Preloaded Cartography: Navionics Gold cartography included (US/Canadian Coastal, US Inland and Bahamas coverage)
  • Optional Cartography: Navionics Silver, Gold, Platinum PLUS, HotMaps or Raymarine LightHouse Charts
  • NMEA Interface: Raynet Ethernet, SeaTalkng, NMEA 2000 (optional adapter), Bluetooth
  • Receiver Type: 50-channel internal GPS
  • Transducer: CPT-100 transom mount CHIRP transducer included
  • Frequency: Dual-band CHIRP DownVision™ (320-380kHz) and CHIRP fish-targeting (170-230kHz)
  • Dimensions: 8 1/16"W x 5 11/16"H x 2 3/4"D
  • Voltage: 12V (10.2-15.6V DC)
  • Power Consumption: Full brightness 9.9W Max, PowerSave 5.2W Max (Power consumption figures represent a loaded system; for sonar variants this includes an active 600 W transducer and DownVision™ variants includes an active CPT-100 transducer.)
  • Waterproof Rating: IPX6, IPX7
  • Warranty: Three years (with product registration)

Radar Specs:

  • Radome Dimensions: 18" diameter, 9.3" high
  • Weight:   15.8 lbs (7.2 kg)
  • Waterproof Rating: IPX7
  • Rotation speed (RPM): 24/30 rpm (dual rotation)
  • Transmit power: 4 kW
  • Power Input: 10.5-35 V DC
  • Beamwidth: 5.0° horizontal, 25° vertical
  • Maximum range: 36 nm
  • Minimum range: 20 meters
  • Radar type: Radome
  • Power consumption: 33.5 W typical
  • Antenna length: 17"

Included with this product:

  • RD418D Digital Radome
  • 10m Digital Radar Cable with RayNet Connector
  • a78 Multi-Function Display
  • CPT100 transom mount CHIRP transducer
  • Navionics Gold cartography with US/Canadian Coastal, US Inland and Bahamas coverage
  • Trunnion bracket, flush mount kit and mounting hardware
  • Sun cover
  • Documentation pack

Installation and Instruction Manual



a78 Display with CHIRP/RD418D Digital Radome Value Pack, Non-WiFi

Features Waterproof
Display Size 7"
Warranty Details Three Years (with Product Registration)
Resolution 800 x 480
Dimensions 8 1/16" Weight x 5 11/16" Height x 2 3/4" Depth

West Advisor

The West Advisor articles have answered boaters' questions and provided solutions to boating problems for more than 20 years. West Marine has compiled one of the Web's most comprehensive collections of technical boating information articles.


by PowerReviews
Raymarine a78 Display with CHIRP/RD418D Digital Radome Value Pack, Non-WiFi

(based on 2 reviews)

Ratings Distribution

  • 5 Stars



  • 4 Stars



  • 3 Stars



  • 2 Stars



  • 1 Stars



Reviewed by 2 customers

Sort by

Displaying reviews 1-2

Back to top

(1 of 1 customers found this review helpful)


One heck of a good deal

By Captain Conrad

from Easton CT


  • Quality
  • Rekiabikity
  • Reliability


  • none

Best Uses

  • Any Vessel 20' And Over

Comments about Raymarine a78 Display with CHIRP/RD418D Digital Radome Value Pack, Non-WiFi:

I love this model Chartplotter. The only tricky part is switching from day to night mode. Press the power button for the pop up menu. I spent ages going through the normal menu and could not find a way to change the display brightness then found it works through the power button.

The only problem I've had was turning off AIS alarms. I've tried everything and will need to call Raymarine customer service. Also I wish to be a meting trim the display remotely through my iPhone or iPad. Presently all it will do is repeat the display.

  • Was this a gift?:
  • No

(0 of 2 customers found this review helpful)


Very good product!!!!

By Cgarit

from Miami,fl

Verified Buyer



      Best Uses

        Comments about Raymarine a78 Display with CHIRP/RD418D Digital Radome Value Pack, Non-WiFi:


        • Was this a gift?:
        • No

        Displaying reviews 1-2

        Back to top