[MRCA] RE: PPI Scope Info

[J Forster]

I tried to send the pics, but the list bounced them.

I'll send you them directly.

Best,
-John

Doran Platt wrote:

> OM,  I'll have a look a few older  AAF and AACS  books with ATC
> equipment.  If its a PPI it may well be part of a GCA or GCI system.
> The two wheels are probably for azimuth and elevation. I don't think
> that a GCA PPI had both elevation and azimuth controls as the beam is a
> vertical fan with good azimuth resolution.  What is puzzling also is the
> size of the tube.  Most late-WWII and later 40's ATC PPI scopes are
> something around 8" or more.  If you've seen the old Berlin Airlift
> movies you may have caught the system in operation.  The scope may also
> be part of a AAA gun laying/directing setup where the operator could
> switch to manually moving the radar to an area of concern after initial
> acquisition.  This is all conjecture on my part, of course.  There may
> be some radar collectors that will give you more info.  If you have a
> jpeg of the unit, many may be able ident it via a picture (you know, the
> 1000 words....), as well as knob markings such as range or PRF.
>
> Regards  K3HVG
>
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