Out of interest I looked up the frequency that u-boat radar used and depending on the type it was either 368 or 556 MHz. When you consider that modern analogue TV transmitters in the UK broadcast at around 474 MHz at much higher power, the crew on the u-boat were quite safe from being cooked alive! 
Nemo
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"I'm afraid there is no disguising the fact that King's obsession with the Pacific and the Battle of Washington cost us dear in the Battle of the Atlantic".
Sir John Slessor GCB, DSO, MC, DL
AOC-in-C Coastal Command RAF
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Last edited by Captain Nemo; 02-15-12 at 03:20 AM.
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