Kenwood NXR-1800E2
The NXR-1800E2 is the second-generation evolution of the NXR-1800E, adding an enhanced SIP interface and improved multi-site IP integration for UHF deployments requiring more advanced VoIP connectivity. Same compact form factor, hot standby redundancy, NXDN/DMR Tier II selectable operation, and 1U two-unit rack density. Built for organizations upgrading from the original 1800E or planning new installations with deeper IP integration requirements.
Overview
When the NXR-1800E was introduced, its built-in SIP interface was a step forward for repeaters in its class. The NXR-1800E2 refines that SIP implementation further, with improved multi-site IP connectivity and enhanced integration for organizations using VoIP dispatch consoles, IP phone systems, or software-based radio management platforms that expect more capable SIP behavior.
The NXR-1800E2 covers UHF at 400-470 MHz (Type 2) and 450-520 MHz (Type 1, future release) with output from 1 to 40 W, running at 40 W at 50% duty cycle and 25 W at 100% duty cycle. Digital protocol selection between NXDN Conventional and DMR Tier II operates the same way as the 1800E: programmable, one protocol active at a time, with no hardware modification required to switch. Analog channel spacing is 25 and 12.5 kHz; digital is 12.5 and 6.25 kHz. Frequency stability is plus or minus 0.5 ppm. Receiver sensitivity is 0.22 uV on DMR and 0.25 uV on analog.
Physical dimensions are identical to the NXR-1800E: 8.21 x 1.73 x 8.33 inches at 4.18 lbs, with two units fitting per standard 1U rack space. Hot standby redundancy, built-in IP adapter, SNMP management, HTTPS remote console, multi-site IP networking across up to 16 sites, G.711 codec support, thermal-controlled fan, USB-A audio connector, and DB25 external I/O connector are all carried over from the first generation. The upgrade path from NXR-1800E to NXR-1800E2 involves no additional rack space.
Key Features
Enhanced SIP Integration
The SIP interface in the NXR-1800E2 improves on the original 1800E implementation with more reliable multi-site IP connectivity and better compatibility with third-party VoIP dispatch console software. G.711 audio codec support is retained. No external IP console or gateway is required for basic radio-to-IP bridge functionality in digital mode.
NXDN and DMR Tier II Selectable
Protocol selection between NXDN Conventional and DMR Tier II per ETSI TS 102 361-1/-2/-3 is handled via programming, not hardware. Organizations can deploy on one protocol today and switch to the other as infrastructure evolves without any physical change to the repeater. Both UHF frequency variants are supported.
Hot Standby in Compact Form Factor
Hot standby redundancy is configurable for mission-critical UHF sites. The NXR-1800E2 maintains the same physical dimensions as the NXR-1800E (8.21 x 1.73 x 8.33 inches), so an active/standby pair still fits in a single 1U rack space with no additional equipment room footprint over a single-unit installation.
SNMP and HTTPS Remote Management
SNMP integration connects the repeater to enterprise network management infrastructure for unified monitoring alongside IT equipment. HTTPS-secured remote console provides programming, monitoring, and test access over IP without requiring a site visit, reducing operational costs for organizations managing repeaters across multiple facilities.
Natural Upgrade from NXR-1800E
The NXR-1800E2 is physically and electrically compatible with the same rack space and power infrastructure as the NXR-1800E. Organizations upgrading from the first generation add enhanced SIP capability without modifying rack layouts, cabling, or power distribution. Multi-site IP networking across up to 16 sites is unchanged.
Interested in the Kenwood NXR-1800E2?
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