Shakespeare Antennas Antenna Testers & Switches
Professional Marine Radio Testing and Switching Solutions
When marine communication reliability is critical, Shakespeare has built its reputation as the most trusted brand in the marine antenna industry. The company's specialized antenna testers and switches represent over a century of engineering expertise applied to ensuring your marine radio systems perform flawlessly when you need them most. These diagnostic and switching tools are essential accessories for boaters who depend on VHF communication for safety, navigation, and emergency contact.
The ART-3 Marine Antenna and Radio Tester
Shakespeare makes an antenna / radio tester – the ART-3 Tester. The ART-3 measures transceiver output power, antenna VSWR, and proper receiver sensitivity. What sets this compact diagnostic tool apart from competitors is its comprehensive testing capability. Unlike other meters in its class, the ART-3 tests receiver function as well as output power and VSWR (antenna efficiency). Built with die-cast aluminum construction for durability in harsh marine environments, the ART-3 operates on either internal battery power or ship's 12 VDC, making it versatile for both dockside maintenance and underway troubleshooting.
The ART-3 eliminates the need for radio checks by providing scientific measurement of your VHF system's performance. It operates in the 155-158 MHz frequency range with a power scale from 0 to 30 watts, allowing boaters to verify transmitter output, diagnose antenna connection issues, and test receiver sensitivity with a built-in signal generator. This level of diagnostic capability helps identify problems before they compromise safety communications.
AS-2 Automatic Coaxial Switch
For vessels equipped with multiple VHF radios, the AS-2 is an automatic switch that toggles two radios to one antenna. When you key the microphone on one of the radios, the AS-2 switches the antenna to it automatically. The radio stays locked onto the antenna until the automatic switch detects a transmit signal from the other radio. This intelligent switching system eliminates manual antenna selection and mounts out of sight, requiring no user intervention during operation—particularly valuable during emergency situations when communication speed matters.
Signal Splitters and Band Separators
Shakespeare also manufactures specialized splitting and separation devices within this category. The 4357-S AM/FM/VHF Band Separator enables boaters to operate AM/FM and VHF radios simultaneously without the need for separate antennas and without interfering with VHF performance. With only one antenna, the 5257-S splitter allows you to use VHF, AIS (receive only) and AM/FM stereo. These solutions reduce antenna clutter on vessel superstructures while maintaining full functionality across multiple communication systems.
Why Choose Shakespeare Testing and Switching Equipment
For boaters committed to maintaining professional-grade marine communications, Shakespeare Antennas testing and switching equipment provides the diagnostic precision and operational convenience that serious mariners demand. With decades of experience serving both military and civilian maritime customers, Shakespeare understands that reliable radio communication can be the difference between routine operation and emergency response. Their antenna testers and switches are engineered to the same exacting standards as their renowned VHF antenna systems, ensuring compatibility and performance across your entire marine electronics installation.