The AS300 Antenna Splitter is designed to allow an AIS Class B Transponder or an AIS Receiver to share the main VHF Antenna used by the VHF Radiotelephone, which removes the need and expense of installing an additional VHF antenna.

Comar Antenna Splitters are built to the highest standards to ensure that the performance of the connected AIS and VHF Radio equipment is not compromised.

FEATURES

Allows use of a single VHF Antenna installation shared between AIS and VHF Radiotelephone
Automatic Routing of AIS or VHF Transmissions
VHF transmissions have priority over AIS
Works with an AIS Transponder (Class B) or AIS Receiver
FM Antenna Connection for receiving Public Radio Broadcasts
Compact Aluminium Housing
12 V dc

APPLICATIONS

Enables AIS to be used with an existing installed antenna
Removes the need and expense of installing a second antenna

Technical Specification

Specification	Details
Part Number / SKU	AS300
Model	Comar, AS300 AIS / VHF Antenna Splitter.
Primary Application	Shared VHF Antenna Management for AIS Transponders, VHF Radios, and FM Receivers
Operating Frequency Range	156 MHz to 163 MHz (VHF Marine Band)
Insertion Loss	0 dB (Active amplification compensates for splitter loss)
VHF Priority & Fail-Safe	Auto-sensing VHF TX priority with fail-safe direct bypass to VHF radio on power loss
Supply Voltage	12 V DC to 24 V DC (9.6 V DC to 31.2 V DC Input Range)
Power Consumption	< 1.5 W (120 mA @ 12 V DC)
RF Connectors	• VHF Antenna: SO239 (PL259 Compatible) • VHF Radio Port: SO239 (PL259 Compatible) • AIS Port: BNC Female • FM Radio Port: BNC Female / Motorola Adapter
Country of Origin	United Kingdom (UK)
Operating Temperature	-15°C to +55°C (5°F to 131°F)
Waterproof Rating	IP40 (Indoor / Below-Deck Installation)
Dimensions & Weight	140 mm x 120 mm x 37 mm; 260 g