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Model # 13649777Mfg # 416-0013


Customer Reviews
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Product Description

The em-trak AIS S100 Antenna Splitter allows your Class B AIS and VHF radio to share a single antenna. The em-trak AIS S100 Antenna Splitter has patented technology to ensure performance and integrity of both devices while our Clear-Call technology guarantees priority for your VHF radio in all circumstances. Ideal for AIS installations where an existing VHF antenna is already installed. Proven performance that you can rely on.



AIS S100 Antenna Splitter

Dimensions 4" Width x 1 3/4" Height x 5 1/2" Length
Features Waterproof
Voltage 12 to 24 Volts DC
Warranty Details Three Years

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by PowerReviews
Em Trak Marine ElectronicsEm-trak Marine Electronics S100 AIS Antenna Splitter

(based on 2 reviews)

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Reviewed by 2 customers

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Good unit reasonably priced.

By Jeff

from Top of the Lower Mississippi River

About Me Advanced

Verified Buyer


  • Easy To Install
  • Good price
  • Reliable
  • Very Good Support


  • Not waterproof
  • Not Weather Resistant

Best Uses

  • Indoor
  • Large Boats

Comments about Em-trak Marine Electronics S100 AIS Antenna Splitter:

Good unit, get it if you have a cabin or waterproof area for it to be installed. The FM radio antenna connection is in the power connector, having it on it's own RF connector would be better. But it works well!

(5 of 6 customers found this review helpful)


Works as advertised, and then some.

By toddster

from Oregon

About Me Advanced

Verified Reviewer


  • Includes cables
  • Works automatically
  • Works with FM radio too


  • Minor issues

Best Uses

  • Large Boats
  • Small Boats

Comments about Em-trak Marine Electronics S100 AIS Antenna Splitter:

I purchased this along with the B100 AIS transceiver from the same manufacturer. It seems to work OK so far, with no noticeable loss of range. With a new AIS antenna, the VSWR reading is 1.1:1 or 1.2:1, and seems to be the same with or without the splitter installed.

The unit is very small, and shares the same form factor with the B100. One cautionary note is that despite the small size of these units, rigid connectors radiate around them in every direction. Therefore, the actual space required for installation may be much larger than you might think. Another quibble is that the main output from both of these units includes numerous tiny conductors bundled into a single cable. You will probably have to supply a terminal strip to bind these and sort out all of the possible connections. This takes even more room in the installation. Finally, assuming that the unit is mounted on a vertical panel, the indicator lights are on the bottom, where they may be impossible to see. Not that you really need to see them unless you are trouble-shooting a problem.

Two pleasant surprises. First, all of the cables that you need are included in the package, so there is no need to order or make coax patch cables. Second, though not advertised in the product description, the unit does include terminals to connect your FM stereo to the antenna as well.

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