'Curator' of the Seaslug website.
- Nov 10, 2012
- Reaction score
I'm not sure what you mean about the 901 being 'power hungry'. It managed to produce one of the narrowest beams of any radar* by using a dielectric lens (so no dish required at all) composed (as far as I can tell) of brass discs in a plastic matrix. The 'complex' rotating components were rotary waveguide joints of quite elegant design and low losses. Finally the anti-icing system used ammonia and so had virtually no electric demand.Type 901 is big and heavy and power hungry for logical reasons.
Firstly to provide a narrow enough beam for guidance to 15nm and later 30nm. A large dish is required.
Secondly a complex system to keep that beam narrow and of use. Involving rotating components.
Thirdly anti-icing system to keep the radar optimal regardless of the environment.
* fine enough to be able to see two targets as being individual with just an 18 minute of arc separation.