Garmin 0100282000 Antenna Signal Splitter

Enhance Your Marine Communication Setup with the Garmin VHF Antenna Signal Splitter

Boaters know that reliable VHF communication can be a lifesaver on the water. Whether you're coordinating with your crew during a fishing trip, navigating busy harbors, or calling for assistance in rough seas, having multiple VHF radios connected to a single high-quality antenna makes perfect sense. That's where this Garmin splitter shines—it lets you share one VHF antenna across up to four radios without signal loss or complicated wiring.

Designed specifically for marine environments, this plug-and-play device taps into the 156-163 MHz VHF frequency range used for marine channels. No need for custom adapters or electrical know-how; just connect and go. It's built tough to handle the saltwater spray, vibrations, and temperature swings you encounter offshore.

Why Boaters Trust This Splitter for Seamless VHF Sharing

• Space and Cost Savings: Instead of mounting separate antennas for each radio, consolidate with one external antenna. This declutters your helm and reduces wind resistance on your vessel.
• Crystal-Clear Reception: Distributes the incoming signal evenly to all ports, ensuring every radio gets full strength—critical for transmitting distress calls or position reports.
• Rugged Marine Build: IPX7 waterproofing means it shrugs off immersion up to 1 meter for 30 minutes, while the -25°F to 55°F operating range covers everything from icy winter cruises to sweltering summer outings.
• Effortless Integration: Works with Garmin's NMEA 2000 network backbone, powering up via 10-32V DC from your boat's system. Includes a patch cable for quick hookups.

Real-world example: On a multi-station charter boat, skippers use this to link the upper helm radio, salon backup, and tender boat unit to a single masthead antenna. Everyone stays connected without drilling extra holes or running miles of coax.

Technical Specifications at a Glance

Simple Installation Tips for Peak Performance

1. Mount the splitter in a dry, ventilated spot near your NMEA 2000 backbone—away from heat sources.
2. Connect the antenna input to your VHF masthead antenna using standard RG-8 or RG-213 coax.
3. Plug each radio's antenna lead into the four output ports.
4. Wire power and ground from your boat's 12V system; it'll draw minimal current.
5. Test transmit/receive on all channels 16, 9, and your local working frequencies.

Pro tip: For best results, pair with a Garmin marine antenna tuned for VHF—minimal insertion loss keeps signals punchy even at 20+ miles range.

Perfect for Multi-Radio Vessels

Ideal for center consoles, sportfishers, sailboats, or commercial ops with flybridge and lower station radios. It scales your comms without compromising safety or convenience, letting you focus on the horizon instead of cables.

Frequently Asked Questions