[FoxHunt] TDOA questions.

[wolfbob]

There is an DF system that is not used by hams (much) called the 
Wullenweber. It is quite large. See:
http://en.wikipedia.org/wiki/Wullenweber.

"portable" versions may have used the "Doppler" form of display.  This ring 
of lights has been called a Pelorus but it is a stretch of the nautical 
definition.

WBob, WB6JPI

----- Original Message ----- 
From: "C.Whitaker" <whitaker at pa.net>
To: "Radio Direction Finding" <foxhunt at mailman.qth.net>
Sent: Friday, August 06, 2010 4:51 AM
Subject: Re: [FoxHunt] TDOA questions.


> Bob,
> I came across the controller part of a DF system
> some years ago.  It has a ring of LED's on a 4 X 6
> box, and uses four quarter wave verticals and all the
> the switching diodes on a square piece of metal,
> and that's the part I do not have.  I have the diagram
> here someplace.   Trivia:  In about 1956 while with
> the US Air Force I was doing some work on our UHF
> DF at a RCAF base in Canada.  They had a remote
> controlled VHF DF, (receiver about two miles from
> an indicator in the Control Tower), that had a ring
> of LED's.   Nothing new under the Sun.
> I'm going to try the TDOA.
> 73  Clete
>
>
>
>
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