Furuno 1935 4kW 3.5 ft Open Array Radar 10.4 in LCD (No Cable)

The Furuno 1935 is a standalone marine radar in the classic Furuno format: a 4-kilowatt magnetron transmitter driving a 3.5-foot open-array antenna, paired with its own built-in 10.4-inch high-contrast color LCD display. It's the radar of choice for owners who want a dedicated radar console at the helm rather than overlaying radar on a multifunction chartplotter, and for owners who want Furuno's signature signal processing and reliability without committing to a full Furuno NavNet helm.

The 3.5-foot open array is the size that makes the 1935 the sweet-spot model in the standalone 1900-series. The horizontal beamwidth at 3.5 feet is roughly 1.9 degrees, which gives noticeably tighter target resolution than the 1.5-foot radome variants but stays small enough to mount on a typical 30-to-45 ft cruiser radar arch without overhang issues. Vertical beamwidth is 22 degrees, which keeps targets in the picture through normal roll and pitch underway. The pedestal rotates at 24 rpm under normal conditions, which is the standard recreational-radar rate.

Maximum range is up to 48 nautical miles, with practical detection of typical recreational targets falling well within that envelope. The 4-kilowatt magnetron is the power class that handles long-range detection of big ships, weather cells, and shoreline features in fog or heavy rain, where lower-power solid-state radars can lose targets in the clutter. Furuno's automatic clutter suppression handles Gain, Sea, and Rain controls without the operator having to tune them manually, which is one of the features that separates Furuno radar from older magnetron designs that needed constant tweaking.

The built-in 10.4-inch color LCD is the practical advantage of the 1935 over a radar-only scanner that pairs with a separate chartplotter. The display is high-contrast for sunlight readability, sized for the volume of information radar produces (targets, range rings, EBL/VRM markers, AIS overlay, ARPA tracks), and dedicated to radar alone, which means the screen real estate isn't shared with charts or sonar. For helms where the chartplotter is already busy with charts and instrument data, having radar on its own screen keeps the overall system organized.

AIS overlay is a real differentiator on the 1935. The radar can track up to 100 AIS targets simultaneously, with full identifying data (vessel name, speed, course, rate of turn, draft, destination) displayed for each one when selected. AIS targets remain visible on screen even when they're radar-shadowed by larger vessels or islands, which is the situation where AIS shines as a backup to radar. ARPA (Automatic Radar Plotting Aid) handles classical radar target tracking with course-and-speed vectors for up to 10 simultaneous targets, the right tool for tracking non-AIS-equipped vessels that radar sees but AIS doesn't.

The Off-Center mode is a Furuno signature feature: pressing the OFF CENTER button shifts the own-ship position to a pre-registered point on the screen so the operator can focus the radar picture on a specific area ahead of the vessel without losing the surrounding context. For navigating tight channels or approaching a harbor at speed, this is the kind of ergonomic shortcut that makes a Furuno radar feel different to operate than radars that force you to change scales to see ahead.

Integration is through Furuno's programmable NMEA 0183 interface system, which lets the 1935 talk to chart plotters, sounders, and other navigation gear from any vendor that speaks NMEA 0183. The radar can receive GPS position data and heading sensor data for true motion radar operation and chart-stabilized target tracking, and it can output radar targets to a chartplotter for overlay on the chart screen. This NMEA 0183 backbone is more interoperable than the Ethernet-only ecosystems on some newer radar lines, useful for installations that mix vendors.

What's in the box: the 1935 radar display unit with built-in 10.4-inch LCD, the 3.5-foot open-array antenna pedestal, the interconnect cable between display and pedestal, mounting hardware for both, and the documentation pack. Power supply is from the boat's house bank. The radar is sized for pleasure craft, sport fishing boats, and small work boats, with installation footprints designed to drop into existing helm cutouts on most recreational platforms.