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Radio Companies: Ultra Electric Ltd: 1920's, The Start



Edward (Teddy) E. Rosen, born in 1898 was the son of Rachel and Samuel Rosen, Polish-Jewish immigrants to London's East End.  Samuel was a grocer by trade but also a lay-teacher.  A colleague in the Post Office Wireless Department got Edward a job in Marconi in 1911, at the age of 13.  During the first world war, Teddy worked at radio servicing in the Royal Flying Corps (after lying about his age).

A very well liked character in the radio business he created a company known for quality at a reasonable price but very rarely with any innovation.

Their best selling radio was the "Coronation Twin" portable.


Set up Edward E. Rosen & Co. making wide frequency response headphones.

New factory: Devonshire Square, London EC2.


The success of the headphones meant a larger premises was needed.  Started to produce horn loudspeakers.  This was a good move as both shop-bought and home-built receivers needed horn loudspeakers to work, thereby capturing both markets.

New factory: 158-160 City Road,London EC


Expanded again into new factory (6,500 sq. ft.) and employed 20 people initially.  Started to build the philosophy of in-house vertical integration by manufacturing components from raw materials.

New factory: Harrow Road,London


Marketed the Beco (British Electric Manufacturing Co Ltd) magnetic-reed type moving iron loudspeaker, the first British commercial moving iron loudspeaker.  Named the "Ultra"


Ultra Electric Ltd was formed.  Edward also changed his surname to Rose to try and disassociate himself from his background, though his notoriety in the wireless world ignored this and continued to use his original name, the familiar one.  Products ranged from loudspeakers, pickups, battery eliminators and a portable receiver. 


Ceased the production of horn-type loudspeakers and started with the "Air-chrome" moving iron (double doped tensioned linen) speaker.


Ultra recruited E.H. Munnion from Marconiphone as it was taken over by HMV as the new radio designer.  They aimed for the middle of the road market with few innovations but well priced and engineered models.


Throughout   The Setmakers by Keith Geddes and Gordon Bussey
Radio Radio! by Jonathan Hill
[1] The Radiophile issue 55 & 56
[2] The Radiophile issue 57
[3] The Radiophile issue 69
[4] The Radiophile issue 71
[5] The Radiophile issue 73
[6] BVWS bulletin Vol. 23 No. 3
[7] BVWS bulletin Vol. 26 No. 1
Green text This is an extract from the Wireless and Electrical Trader of the mentioned date.
Note: When addresses have been used, numbers have been deliberately left out.