[ARC5] ARC-18 / -28 (Was "Radio Comm...)

[Nick England]

Speaking of bumps - I'm currently reading a book about Allied WW2 deception
operations. It mentions "spoof vans" which had airborne gear installed and
would drive around airfield perimeters so that enemy DF would think a
squadron was there instead of elsewhere. The transmitters were fitted with
some vibration device to mimic the warble from actual aircraft operation.
Fascinating, Captain - anyone ever heard of or seen such a thing?

http://www.google.com/search?hl=&q=deceivers+%22spoof+vans%22

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On Mon, Apr 25, 2011 at 9:52 AM, David Stinson <arc5 at ix.netcom.com> wrote:

> One has to wonder how they got this repeater lash-up
> to work reliably over time.  Sorry Collins fans;
> I say that because, having re-worked two ARC-1s now,
> I wouldn't want to count on them after the first good "bump"
> on the runway.  For all the ARC-1's "fancyness" and expense,
> the oscillator and especially the receiver front-end tuning
> are incredibly touchy.  Moving one of those auto-tune units
> even a fraction of a degree can change
> receiver sensitivity by an order of magnitude- it's that bad.
> Just a little wear on the clutches and you're setting at
> 7 microvolts instead of  .7 microvolts.  The ARC-3 is
> worlds better and more rugged.  Looks like the Army
> finally got one over on the swabbies.  Someone used
> a grease pencil to mark "Davy Jones" on mine.
>