[time-nuts] RADAR

[Robert Darlington]

Not only that, but by stamping them out you could go from producing one
every other week or so to 1000 a day.

-Bob

On Mon, Dec 20, 2010 at 5:07 PM, J. Forster <jfor at quik.com> wrote:

> Correxct, I believe.
>
> There is a little known story about the cavity magnetron:
>
> The one Tizzard brought over was machined out of a solid block of copper.
> Copper is a horror to machine....  kinda like cheese. A machinist was
> lucky to get any yield.
>
> It was brought to the Raytheon labs and Percy Spencer looked at it. The
> next day he proposed to make them out of thin stampings, like the stator
> of a DC moter, stacked up and furnace brazed. He also figured out a better
> way to make the internal straps. The outcome was an easily produced
> maggie, which also produced much higher power.
>
> Best,
>
> -John
>
> ================
>
>
> > I believe the klystrons came from the Varian brothers in California, but
> > England sent us their multi-cavity magnetrons via Tizzard.  Both were
> > essential.  We gave them the duplexer.
> >
> > John  WA4WDL
> >
> > --------------------------------------------------
> > From: "Lee Reynolds" <kd1sq at spamcop.net>
> > Sent: Monday, December 20, 2010 6:54 PM
> > To: <time-nuts at febo.com>
> > Subject: [time-nuts] RADAR
> >
> >> Hm, I suspect, Rob, much though it might distress national pride, that
> >> RADAR
> >> a la WWII has probably to qualify as an Anglo American product.
> >>
> >> The Cousins did, after all, send us those nice klystrons they managed to
> >> get
> >> up and running. Would've been a bugger to do it without those.
> >>
> >> Mind you, there was quite a bit done by a number of countries in getting
> >> the
> >> idea, basic tech and proof of concept going before long before that.
> >>
> >> Do like those old HOME CHAIN towers you see spotted around here and
> >> there,
> >> though.
> >>
> >> Anyone else have anything to add to this?
> >>
> >>    Lee
> >>
> >> -----Original Message-----
> >>
> >> Date: Mon, 20 Dec 2010 21:51:15 -0000
> >> From: "Rob Kimberley" <rk at timing-consultants.com>
> >> Subject: Re: [time-nuts] Loran?
> >> To: "'Discussion of precise time and frequency measurement'"
> >> <time-nuts at febo.com>
> >> Message-ID: <004801cba090$069dc9d0$13d95d70$@timing-consultants.com>
> >> Content-Type: text/plain; charset="us-ascii"
> >>
> >> I there was me thinking that we invented RADAR......
> >>
> >> Rob (in UK) Kimberley
> >> --------------------------
> >>
> >>
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> >
> >
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