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Japan Radio Co., Ltd.

JLR-8600 / JLR-8600-D

Name: Japan Radio Co., Ltd. JLR-8600 / JLR-8600-D
Brand: Japan Radio Co., Ltd.
SKU: OSE-62981

JLR-8600 / JLR-8600-D. Category: GNSS Equipment Incorporating one or more of the following elements: — GPS equipment (Moved from ex UK/4.14) — GLONNASS equipment (Moved from ex UK/4.15) — DGPS equipment (Moved from ex UK/4.50) — DGLONASS equipment (Moved from ex UK.4.51) — Galileo equipment (Moved from ex UK/4.56) — Beidou (BDS) — Indian Regional Navigational Satellite System (IRNSS) — SBAS equipment. Module: B. Manufacturer: Japan Radio Co., Ltd..

Inspector Detail

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Common issues

Antenna cable/connector corrosion causing intermittent signal loss or a frozen position
Water ingress at the deck-mounted antenna/dome
Internal backup battery depletion, causing loss of stored settings and a slow cold-start fix
Outdated firmware affecting compatibility with interfaced ECDIS/AIS equipment
Display unit dimming or failure on older units
NMEA interface/output errors affecting downstream equipment (ECDIS, autopilot, VDR)

Inspection checklist

Confirm position fix accuracy against a known reference or charted position
Check the antenna and cable for physical damage, secure mounting and corroded connectors
Verify NMEA output data is reaching all connected systems (ECDIS, AIS, autopilot, VDR) correctly
Test alarm functions, including loss-of-signal
Check internal backup battery status and replace per schedule
Confirm software/firmware version against any manufacturer safety bulletins
Cross-check GNSS position against radar/visual fix periodically per bridge procedure

Service intervals

Position accuracy cross-check	each watch, per bridge procedure - operational rather than maintenance
Antenna/cable inspection	annually or at each navigation equipment survey
Backup battery replacement	per manufacturer's recommended interval, commonly every 3-5 years
Full function test including interfaced systems	annually, at the GMDSS/radio survey

Typical wear limits

Antenna radome condition

replaced if cracked, UV-degraded, or if water ingress is found - condition-based, no fixed numeric limit

Ranges are typical for this design class. Always confirm against the manufacturer documentation for your serial number.

Critical spares

GNSS antenna unit
Antenna cable/connectors
Internal backup battery of the correct type

Safety

Loss of GNSS position without a prompt alarm or an available backup position source can compromise navigational safety
Working aloft on the mast for antenna inspection requires working-at-height precautions
GNSS should never be relied on as the sole means of position fixing, per standard bridge procedure

Class survey

Note: this catalog entry is filed under 'Auxiliary Boiler (Oil-Fired)' / category 'Boilers', but the product (Japan Radio Co. JLR-8600 / JLR-8600-D, UK MCA type approval BABT-UKMA000041) is GNSS/GPS navigation receiver equipment, not a boiler - the notes above are written for the GNSS receiver. This falls under GMDSS/navigation equipment (radio) survey rather than boiler/machinery survey; the radio surveyor checks that equipment on the Safety Radio/Safety Equipment Certificate matches what is fitted and functioning.

Estimated lifetime: Typical GNSS receiver/navigation electronics service life is around 10-15 years before manufacturer support or spares availability becomes limiting, though units often remain in service longer if still supported.