Ensure your VHF radio is operating at full power when you need it most.

At East Coast Marine Electronics, we offer professional VHF radio testing to check both transmit power (wattage output) and antenna performance. Whether you're heading offshore, entering a game fishing tournament, or simply want peace of mind on the water, reliable communication is critical—and it all starts with a properly functioning VHF system.


What We Test

  • Transmit Power Output
    We use specialized equipment to measure the actual wattage your radio is transmitting. Many radios are rated at 25 watts, but power loss through cabling or corrosion can reduce this significantly.
  • Antenna SWR (Standing Wave Ratio) Test
    A poor SWR reading means your antenna isn’t effectively radiating the signal, which can lead to reduced range or complete communication failure. We test and diagnose antenna performance to ensure it's working at peak efficiency.

Common Issues We Find

  • Corroded or loose antenna connectors
  • Damaged coax cable
  • Faulty microphone switches
  • Water ingress in antenna bases
  • Poor quality or mismatched antennas

Why It Matters

Your VHF radio is your lifeline in an emergency. Testing ensures:

  • Maximum range and clarity
  • Reliable communication with other vessels, marinas, and Coastguard
  • Compliance for safety inspections and club tournaments

Book a Test

Our mobile service covers the Bay of Plenty, Coromandel, and Rotorua regions. We come to you and can test onboard—whether at home, in the marina, or on a trailer.