World War Ii Us Navy Fleet Radio Unit (Fru) - NT

  Historic Site


DEG: -13.23128 131.130096
DMS: 13º 13' 52.61" S 131º 07' 48.35" E
UTM: 52 L 8536305mN 730823mE
Altitude: 58.96m


Place Type

Heritage - Historic Site


91.37kms South of Darwin - Driving 114 km (1 hour 21 mins)

Address & Contact

578 Haynes Rd
Adelaide River NT 0846
Phone: N/A
Email: N/A
Web: N/A


Sidney A. Burnett of the US Navy was involved in building the Adelaide River Fleet.Radio.Unit site on Mt Bundy Station after the Navy decided to locate a new intercept station as far north as possible. He made the selection on 28 January 1943, and by the end of March they were operational. They set up shop on Mt Bundy Station just east of the of the river. The RAAF helped them put the station together.
Fleet Radio Units (FRU) were the major centers for Allied cryptological and signals intelligence during the Pacific Campaign of World War II. Initially two FRUs were established in the Pacific, one at Pearl Harbor, Hawaii, called Station HYPO or FRUPAC (Fleet Radio Unit, Pacific), and the other, called Station CAST or Belconnen, at Cavite Naval Yard, then Corregidor, Philippines. With the fall of the Philippines to Imperial Japanese forces in April and May 1942, CAST personnel were evacuated to a newly established FRU at Melbourne, Australia, called FRUMEL (Fleet Radio Unit, Melbourne).
HYPO and FRUMEL supervised detached field units scattered at various locations (such as the one that was here) and aboard ships throughout the south, central, and north Pacific areas until the end of World War II. There was another FRU at Cooktown , Qld , it was not successful , the site here at Adelaide River was highly successful in decoding Japanese transmissions.
The site here on Mt Bundy has 14 Concrete slabs and 6 Antenna mast bases, sewer pit’s, Slit Trenches, a vehicle service pit, steps and pathways, I have spent quite a lot of time cleaning up the site for tourist viewing, if your passing through Adelaide River , drop in as I would be pleased to give you a tour of the site.
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Closest Weather Station

Batchelor at 25/12:00am CST
Distance from World War Ii Us Navy Fleet Radio Unit (Fru) 22.69km NW
TemperatureFeels LikeRel. HumidityDew PointPressureRainfallWind DirectionWind SpeedGusts

Closest Climatic Station

Batchelor Aero
Distance from World War Ii Us Navy Fleet Radio Unit (Fru) 22.69km NW
Mean Max. °C32.732.232.833.732.731.231.833.336.036.835.333.8
Mean Min. °C24.023.823.421.618.816.516.317.020.623.023.924.1
Mean Rain mm306.7360.7258.9101.824.

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