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MAD IDEA: LNB cooling for fringe 2D reception

  • 12-11-2003 7:43pm
    #1
    Mike 1972
    Closed Accounts Posts: 8,018 ✭✭✭


    Had this mad idea today on how people in far flung corners of Europe might be able to watch programmes on Astra 2D without using a 3 metre dish

    All electronic components Including LNB's have better noise performance at lower temperatures so maybe building a LNB with a Thermo-Electric Cooler (also known as a peltier heat pump) and a pumped water (or even liquid nitrogen) cooling block would do the trick

    I know with a TEC cooler and water block its theoretically possible to achieve temperatures of minus 50 degrees (although the TEC takes a shipload of current) with nitrogen -160degrees is achievable

    Some people into extreme processor overclocking are already using water cooling on their PC motherboards so the notion mightnt be as impractial as it initally sounds

    Is anyone out there enthusastic/insane/desperate enough to give it a go ?


Comments

  • #2
    jmcc
    Registered Users, Registered Users 2 Posts: 7,521 ✭✭✭jmcc


    Originally posted by Mike 1972
    All electronic components Including LNB's have better noise performance at lower temperatures so maybe building a LNB with a Thermo-Electric Cooler (also known as a peltier heat pump) and a pumped water (or even liquid nitrogen) cooling block would do the trick

    It depends on the limits that the components and the boards in the LNB are rated for. When you change the temperatures dramatically, you can often change the characteristics of the components and the boards. Thus your LNB may not work the same way or at all. (Cryogenic cooling was used but the technology (silicon as opposed to GaAs) was very different (before most people around here had even heard of satellite television.) Bigger dishes are often the cheaper option.

    Regards...jmcc


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