[BC] A new Whatzit?

Wed Feb 8 16:36:26 CST 2006

I would have thought that, but it looks like it's made out of brass.  Even
if the coils were inside, you wouldnt get any signal thru the brass to
excite the coil.  Looks like a smaller version of the DF loop that used to
be on airplanes years ago.

Paul Smith
Sarasota, FL

-----Original Message-----
From: broadcast-bounces at radiolists.net
[mailto:broadcast-bounces at radiolists.net]On Behalf Of Jared Seese
Sent: Wednesday, February 08, 2006 5:23 PM
To: Broadcasters' Mailing List
Subject: RE: [BC] A new Whatzit?

The thing looks like a radio directional finder probably pre world war
two and more that likely a band I, II, III, antenna and the tapes are
each band.
Jared

-----Original Message-----
From: broadcast-bounces at radiolists.net
[mailto:broadcast-bounces at radiolists.net] On Behalf Of Dennis Cope
Sent: Wednesday, February 08, 2006 2:12 PM
To: Broadcasters' Mailing List
Subject: RE: [BC] A new Whatzit?

Connect the thing up to a network analyzer and find out what frequency
it's
tuned to.
Dennis

the material the loop and base are made of?? (Looks a little like brass
or
bronze in the pics, to me... how much does it weigh??) Would brass help,
or
hinder DF ?

   what if there were another ring inside this one... any outputs to
that?

   Is that a pulley partway up the center??

   My mech skills tell me that even "back in the day" - nobody would go
to
the time and expense of using three screw to level / plumb the thing
unles
they really needed to...   So I wonder why they did it.  the points are
used
rather than pads because they "get down through all the junk" and are
more
reliable...

 I can't help but think there was another loop inside the large one,
probably 90 degrees to the first... or at least at a different angle to
the
first...

   and I cant help but notice all the screws (?) around the
circumference of
the vertical support.   If they hold it still from spinning, that's one
thing, but if they hold a bearing or a race, it means the accuracy of
the
swing was more important than just DF work... or... it was run by
something
other than a crank at the bottom (like the old DF trucks from the movies
had
a crank... )

   I wonder if this was partly gimbal to hold and feed something else...
which isn't in the picture...
  Jason
>
> I wish I could give you a make and model, but there is nothing like
this
> on
> the Whatzit.  There is however, several connecting posts located near
the
> bottom label "A" through "H". "A" is the common post and "B" through
"H"
> are
> tap points for a coil of wire looping around the circumference of the
> ring.
> "H" indicates there are a total of 105 turns.  The coil is made of
green,
> cotton, insulated, magnet wire, gauge unknown.
>
> I too, believe it is some sort of RDF antenna, but what kind and where
it
> came from are a mystery.  Each of the three legs comes to a point that
is
> itself an adjustable screw to adjust the level of the loop.  The
design
> leads me to believe there is a missing base plate of some sort as I
see no
> way of keeping the base from moving while trying to adjust the
direction
> of
> the loop.
>
> There also appears to be something missing, inside, at the bottom of
the
> loop.  There is a finely threaded mount, approximately 1/2" in
diameter by
> 1/2" long, that looks like something else should mount there.
>
> I came by this piece while cleaning out one of the supply closets at
our
> remote studio in a theme park.  No one knows where it came from or how
it
> got there.
>
> Dan
>
> -----Original Message-----
> From: broadcast-bounces at radiolists.net
> [mailto:broadcast-bounces at radiolists.net] On Behalf Of Barry Mishkind
> Sent: Sunday, February 05, 2006 12:47 AM
> To: broadcast at radiolists.net
> Subject: [BC] A new Whatzit?
>
> Perhaps someone knows the make and model of this item?
>
> www.oldradio.com/pic1.jpg
> www.oldradio.com/pic2.jpg
>
>
>
>
>
>
_______________________________________________________________________
> Barry Mishkind     -       Tucson, AZ    -   520-296-3797
>
>
>
>
>
>
>
>
>
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