Noreen

For people with the given name, see Noreen (given name). For the Swedish linguist, see Adolf Noreen.

Noreen, or BID 590, was an off-line one-time tape cipher machine of British origin.

Noreen on display at Bletchley Park museum

Usage

As well as being used by the United Kingdom, Noreen was used by Canada. It was widely used in diplomatic stations. According to the display note on a surviving unit publicly displayed at Bletchley Park in the United Kingdom, the system was predominantly used "by the foreign office in British embassies overseas where the electricity supply was unreliable."

Usage lasted from the mid-1960s through 1990.

Compatibility

It was completely compatible with Rockex.

Power supply

The units were powered by two batteries of six and twelve volts respectively, though some were known to have been powered by mains.

Other uses of the name "Noreen"

• Noreen was the name of a wooden dragger that was acquired by the U.S. Navy during World War II and converted into the minesweeper USS Heath Hen (AMc-6).
• Noreen is a common name in the Americas, Ireland, Scotland, and the Middle East. Also spelt Naureen, Noirin and Nowrin (نورين). In Arabic, the word means "luminous"'. In Ireland and Scotland, 'Noreen' is the anglicized version of 'Nóirín', which is the diminutive of 'Nora'.

External links

• Jerry Proc's page on Noreen
• Noreen on Crypto Museum website