Christie's auction and other computer history events

From: Randy McLaughlin <>
Date: Fri Feb 18 13:14:22 2005

From: "Paul Koning" <>
Sent: Friday, February 18, 2005 12:57 PM
>>>>>> "Brad" == Brad Parker <> writes:
> Brad> William Donzelli wrote:
> >>> So are you saying the Germans did most of the radar work? If so
> >>> then it probably was a case of two groups both doing the work,
> >>> since obviously the knowledge wasn't being shared.
> >> No, not the German, but pretty much everybody. US, British,
> >> Germans, Russians, Swiss, Japanese...
> >>
> >> The British, however, get nearly all of the credit.
> Brad> I thought Alfred Loomis and his gang in building 20 at MIT did
> Brad> most of the heavy lifting on allied RADAR. Is that untrue?
> Brad> As I recall they benefited greatly from a British magnetron
> Brad> design, however (centimeter wavelength).
> Remember that early radar was VHF/UHF, not microwave.
> paul

While some early radars may have been VHF/UHF one of the big "secrets" of
WWII was the British design of micro-wave radars. They were small enough to
be plane mounted. The big trick was one tube require very precise milling
and it took a good amount of time to manufacture one. They brought the
problem to American engineers, they developed a process to mass produce them
by stamping the components out of sheet metal and soldering pieces together
rather than the time consuming milling process.

The Allies had many mobile radar units using microwave technology while the
Axis had fixed radar stations that were vulnerable to bombing.

Received on Fri Feb 18 2005 - 13:14:22 GMT

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