Communications · Field guide

Choosing and setting up mark-boat radios

Clarity in wind noise is more valuable than an extra menu of features.

Reviewed August 2026 · Independent editorial guidance

Recommended shortlist

Icom IC-M73PLUS

Why: Active noise cancellation, loud audio and automatic recording of the last incoming call directly address noisy mark-boat work.

Watch: It does not float. Tether it, and note that optional headsets/adapters may not be waterproof.

Manufacturer details ↗Best integrated safety features

Standard Horizon HX890E

Why: Floating, IPX8, DSC/GPS, 6W output and noise cancellation in one handheld.

Watch: At roughly 310g it is a substantial unit. DSC requires correct configuration and operator competence.

Manufacturer details ↗

Set the radio up for the job

Pre-programme the event channels, lock the keypad if appropriate, set squelch correctly, keep high power for when it is needed and test with the actual headset or speaker mic before leaving shore.

A good mark-layer call

Identify yourself, give the essential fact first, add time and location, then stop. Example: ‘Race, Mark 1. Mean 082 at 1420, range 074 to 091, 11 knots. Standing by.’ Repeat instructions back when a wrong mark position could affect the race.

Wind-noise control

Shield the microphone with your body, hold it close, speak across rather than directly into it and slow down. Noise cancellation helps, but microphone technique and a disciplined radio net help more.

Checked sources

Icom IC-M73PLUS specifications ↗Standard Horizon HX890E specifications ↗

Editorial standard

Product specifications can change. Check current manufacturer information, event requirements and local operating procedures before buying or relying on equipment.