The display will prompt you to turn the wheel manually to hard-over Port. Turn it until it stops, then press OK . Repeat the exact same process for hard-over Starboard.

Tighten the locknuts on the transmission link to secure the length. Step 4: Verify the Mechanical Range

transmitter lever to its center position using the built-in alignment mark. This mark should be directly opposite the cable entry point. Mount the

Mount the unit in a dry, accessible area of the tiller flat or steering compartment. While rugged, avoiding direct submersion extends the unit's lifespan.

Ensure the center of the RF300 is roughly in line with the center of the rudder post. 3.2 Mechanical Linkage Installation simrad rf300 installation manual

on a flat platform with its center in line with the center of the rudder post.

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When turning hard-to-port or hard-to-starboard, the frequency should smoothly scale up or down between roughly 2500 Hz and 4300 Hz. If the frequency stays locked at zero or doesn't change when the arm rotates, the internal electronics of the RF300 are damaged and the unit needs replacement.

Check: Ensure the wires are clamped onto the copper strand, not onto the plastic insulation inside the terminal block. Check for corrosion along any wire splices. Set your multimeter to measure Frequency (Hz) . The display will prompt you to turn the

Follow these step-by-step instructions to mechanically secure the feedback unit. Step 1: Set the Rudder to Midships

The transmitter rod should ideally be set to the inner limit of the transmitter lever's outer slot.

The Simrad RF300 outputs a specific frequency signal (commonly 3400 Hz at midships, changing by 20 Hz per degree of movement). It connects directly to the dedicated rudder feedback terminals on your Simrad Autopilot Computer (such as the AC12, AC42, NAC-2, NAC-3, or legacy J300X/J3000X systems). Wiring Color Code Wire Color Autopilot Terminal Label Positive Signal / Power FB or RUDDER + White Negative / Return FB or RUDDER -

Whether you’re a seasoned sailor or a weekend cruiser, few things are more frustrating than an autopilot that can’t find its "center." If your Simrad system is acting twitchy, it’s time to talk about the unsung hero of the helm: the RF300 Feedback Unit Tighten the locknuts on the transmission link to

: Fasten the other end of the transmitter rod to the RF300's transmitter lever. Use the two available slots in the lever to optimize the linkage if needed.

When the rudder is dead ahead, the RF300 transmission arm must be perfectly parallel to the rudder tiller arm.

Do not run the feedback cable parallel to high-current wiring, such as radar cables, VHF antenna coax, or thruster power lines.

Comprehensive Installation Guide for the Simrad RF300 Rudder Feedback Unit