Q24D / E70498
See the Raymarine Quantum 2 Q24D E70498 connection points and wiring example. Open the diagram in Crimp to add your equipment and plan the cables between them.
Open this example as a new project. Use your own parts and cable lengths to make the plan yours.
Use the diagram as a starting point for your installation. Replace the example equipment and cable lengths with your own, and check the connections against your exact model's instructions.
3 m one way
12 V system
Sized against ABYC E-11. The design current is the part's continuous draw. The length is one way; voltage drop includes an equal-length return.
The editable example uses 3.048 m (10 ft) runs unless a shorter run is stated. Metric overviews round these to 3 m. Adapt the parts and lengths to your installation before choosing cable and protection.
This 12 V example uses the manual's 5 A fuse option and 17 W maximum transmit power as its load. The alternative is a 3 A thermal breaker, not a 3 A fuse. Follow the power extension, RF-clearance, mounting and data-connection instructions. Manufacturer installation manual
Wiring diagram
Open this example in Crimp to use your own parts and cable lengths. Review the assumptions and installation notes as you adapt the circuit.
This 12 V example uses the manual's 5 A fuse option and 17 W maximum transmit power as its load. The alternative is a 3 A thermal breaker, not a 3 A fuse. Follow the power extension, RF-clearance, mounting and data-connection instructions. Manufacturer installation manual
Edit this wiring exampleInstallation notes
Guidance for this model, with sources linked beside the relevant advice.
Verified against the manufacturer's documentation (rev. 87342 Rev 6, 07/2025), checked 2026-10-01. Manufacturer documentation →
Quantum 2 Q24D, E70498, is a Doppler radar radome for compatible Raymarine displays. Its radar data can travel over RayNet or Wi-Fi. Wi-Fi removes the data cable only; the scanner still needs its own DC power cable. Heading, speed and display compatibility also affect the available tracking functions.
The scanner accepts nominal 12/24 V, within 10.8–31.2 V at its connection. The manual specifies a 5 A inline fuse or 3 A thermal breaker. Follow the power-cable extension table for the chosen nominal voltage and route, rather than assuming the same cable size is suitable for both 12 V and 24 V. Connect red positive and black negative; the radar's supplied power cable has no separate drain conductor.
Published power is 17 W maximum transmitting, 7 W standby and 2 W in Wi-Fi sleep. The catalog's approximately 1.42 A is the explicit calculation 17 W / 12 V, not a current measured at every supply voltage. No startup surge is published here. Terminal limits are planning bounds from the specified protection, not connector test ratings.
Choose a supported mounting surface and a position with a clear radar view, observing the manual's RF exclusion and compass-clearance requirements. Account for people using decks or platforms near the scanner beam. Follow the permitted fastener engagement and mounting orientation; an overlong fixing can damage the scanner. Support the cable and seal deck penetrations without compromising its connectors.
If using Wi-Fi, record the scanner credentials before installation and check link quality at the intended mounting position. Mast structure and other obstructions can impair the link. If using RayNet, follow the supported network arrangement and protect unused connectors with their caps.
Confirm the radar is discovered by a compatible display and can enter standby and transmit. Check supply voltage at the scanner during operation, not merely at the switch panel. Complete the bearing-alignment procedure using a suitable fixed target, and verify the source and quality of heading/speed data before depending on Doppler or target tracking.
A powered scanner that is not discovered calls for checking pairing credentials, network cabling and software compatibility. Intermittent resets call for checking voltage drop and connector corrosion. Poor target alignment calls for calibration and sensor checks. Isolate scanner power before servicing or entering the defined exposure area; a display menu alone is not physical electrical isolation.
Quantum installation instructions, Rev 6: installation and location chapters, power pp. 54–57 and electrical specifications p. 79. The full PDF is downloaded and hashed in the marine ledger. The power-only catalog symbol does not model radio coverage or network traffic.
Build it out
Add Q24D / E70498 to your diagram, then connect your batteries, chargers and loads. Crimp calculates cable sizes and checks the connections as you draw.
Every cable you draw there is sized against ABYC E-11, from the same tables as the reference on this page.
Technical reference
Check the model, ratings and connection points against your own unit before choosing installation hardware.
Check stud sizes, fuse type, run length and how warm the space gets against the gear you actually have before you order.
Catalog connection points, current direction and planning limits. Check the manufacturer's pinout and connector ratings before installation.
+
pos
positive · input
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neg
negative · input
Method & provenance
Manufacturer specifications describe the equipment. Crimp calculates cable results from the circuit and assumptions you enter.
From the maker
Manufacturer, model, ratings and which terminal does what come from the catalog. A newer revision, or the nameplate on the unit in your hand, can say something different — when it does, the nameplate wins.
ABYC E-11
Sized against ABYC E-11. Boats built to UK or EU rules answer to ISO 13297 — check these figures against it before you build. The run length and the current above are what drive the result. Crimp doesn't know how warm your space gets; draw the cable inside an engine-bay zone on the canvas and it sizes for the heat.
Next step
Open this example as a new project. Add your equipment and cable lengths, then review the sizing and checks for your setup.