Regarding H2S and H2X radar

Discussion in 'Radar' started by donkeyking, Jun 9, 2009.

  1. donkeyking

    donkeyking Member

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    which country was H2X radar made in? UK or US

    And who can post a mosquito picture for me and this mosquito installed H2S radar?

    Thanks
     
  2. mhuxt

    mhuxt Active Member

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    #2 mhuxt, Jun 9, 2009
    Last edited: Jun 9, 2009
    So far as I'm aware, H2S was developed by the Brits, though I don't know if they benefitted from US tech / bits in doing so.

    Not sure how H2X differed, but so far as I know it was the US designation for H2S. The Brits never called their own system H2X, only the USAAF.

    At least some 139 Sqn Mosquitos had H2X in a painted-over nose, as opposed to the larger blister on the aft fuselage, which IIRC was used right at the end of the war by 627 Sqn.

    There's a photo of a 139 Sqn H2X Mossie at this site:

    Wing Commander H A Forbes
     
  3. Tinplate58

    Tinplate58 Member

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    H2X was the American development of the British H2S; both were airborne ground-scanning radar.Halifax/ Lancaster pathfinders had H2S in a bulge under the fuselage.
    H2S was also in a few Eighth AF B-17Fs in late 1943 but installed below the nose ; early H2X units were the same ----known as "STINKEY".
    Later it was able to be fitted in place of the ball turrets in Eighth-Fifteenth B-17s and B-24s (as a radome) known as "MICKEY".
    H2S and other electronic gear was in RAF Mosquito PR.IXs; Eighth AF had PR.XVIs with H2X in a re-designed nose similar to the "bullnose" on night fighter XIIIs and XXXs (802RG/ 25BG(R) .
    The attached is a red-tailed XVI from the 25th at Watton,the small bulge on top of the nose can also be seen on some RAAF Beaufighters.

    Nick
     

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  4. donkeyking

    donkeyking Member

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    Great picture, thank you very much
     
  5. hartmann

    hartmann Member

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    The H2S differed from H2X in the wavelenght used.
    H2 S = S band, It worked in 10 cm of wavelength.
    H2 X = X band, It worked in 3 cm wavelength.

    H2X was a nightmare for twin engined airplanes because It demanded a lot of power from the engines. it was cause of accidents, and wasn´t all the worth It was intended for (It tended to be frequently jammed by the rain ad snow, a lot more than H2S, and far more than equivalent German radars working in decimetric wavelenght,like "Hohentwiel", almost immune to bad weather).

    I hope this can help.
    Best regards. :D
     
  6. donkeyking

    donkeyking Member

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    #6 donkeyking, Jun 12, 2009
    Last edited: Jun 13, 2009
    What other difference is there except wavelength between H2S MK III and H2X ?

    I know US used H2X radar before June 1944, but RAF just used H2S MK III which used the same 3cm wavelength with H2X in Dec 1944.
     
  7. hartmann

    hartmann Member

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    Hello donkeyking

    Unfortunatelly, I don´t know exactly the difference. I think that it was more of a designation problem between US and British nomenclature, than really a big difference between both sets. I will try to find something more in books and documents.

    Best regards :D
     
  8. donkeyking

    donkeyking Member

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    I hope you can help me to find some information about manufacture information for H2X

    Thanks again and good luck to you.
     
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