What Is NXDN in Two-Way Radio?

NXDN explained

NXDN is a proprietary digital radio standard developed jointly by Kenwood and Icom. It operates using FDMA (Frequency Division Multiple Access) with 6.25 kHz channel spacing, providing digital communications in half the spectrum of a standard 12.5 kHz analogue channel.

NXDN technical characteristics

NXDN uses FDMA rather than the TDMA (Time Division Multiple Access) approach used by DMR. This means each NXDN channel carries one conversation at a time — there is no time-slotting. The 6.25 kHz channel width allows NXDN to occupy spectrum very efficiently, particularly valuable in congested bands or where licences cover narrow channel widths.

NXDN features

NXDN provides digital audio quality, digital call signalling, individual and group calling, digital encryption (in higher-tier implementations), basic data messaging, and GPS integration in compatible devices. The standard is supported across the Kenwood NX-series and Icom IDAS product ranges.

NXDN vs DMR

DMR is the dominant open digital standard in UK commercial radio, supported by virtually all manufacturers including Hytera, Motorola, Kenwood and Icom. NXDN is a proprietary standard, which means NXDN radios from Kenwood and Icom are interoperable with each other but not natively with DMR equipment. For mixed-manufacturer environments or systems requiring broad supplier choice, DMR is generally the preferred option. NXDN is well-suited for organisations committed to the Kenwood or Icom ecosystem.

Talk to Yesway about digital radio standard selection