[Milsurplus] Need Info On TAV-4

[Greg Mijal]

Please see my posting on milsurplus that I sent 4/19/11
TNX
Greg
WA7LYO

----- Original Message ----- 
From: "Don Merz" <n3rht at yahoo.com>
To: "Mike Morrow" <kk5f at arrl.net>; <milsurplus at mailman.qth.net>
Sent: Wednesday, April 20, 2011 1:30 PM
Subject: Re: [Milsurplus] Need Info On TAV-4


I appreciate everyone's comments and taking the time to look. The history of
this is way beyond me. But I can see that it does look like something that 
might
have been developed into the TBX. It is by far the coolest set I've come 
across
in quite a while.

I am cleaning out an old house here formerly occupied by a widowed engineer. 
The
guy was not into any one thing deeply--but he was into everything! His 
primary
military interest was RADAR and he apparently had the house full of all 
these
huge old RADAR sets. They could not find anyone to take them and the
handicapped-living-on-disability-next-door-neighbor has spent the last 8 
months
dismantling them for scrap metal! Then they found me (frustrating because I 
live
exactly 10 minutes away). The house has sat empty for years.


Now I am rooting though huge piles of literature and volkswagen parts (the 
guy
used to own a volkswagen repair shop) and video stuff --TONS of magazines-- 
computer monitors and you would not believe what all to find an occasional
nugget. It is sometimes dangerously hair-raising climbing through it 
all--very
dirty work.

This is obviously the best military thing I have found. If you look at some 
of
the other eBay auctions, you can see some of the weird RADAR displays and
whatnot. I have all the RADAR manuals here. The earliest is the Mark 12 fire
control set, then up through the FPS-series. I bet I have some documentation
here that is the only copy anywhere. But there is so much that I am just 
piling
up the RADAR manuals until I can get to them.

My work schedule goes ballistic April 30th and I am scrambling to pull as 
much
out of there as possible before then.

73 de N3RHT


----- Original Message ----
From: Mike Morrow <kk5f at earthlink.net>
To: milsurplus at mailman.qth.net
Sent: Wed, April 20, 2011 12:33:59 PM
Subject: Re: [Milsurplus] Need Info On TAV-4

Don wrote:

> http://cgi.ebay.com/ws/eBayISAPI.dll?ViewItem&item=290558019274

Well, that's one of the most interesting things I've *ever* seen!

It does confirm that the January 1945 SHIPS 242A entry for the
TAV is for unit with a transmitter *and* a receiver.

It's also interesting that the 2000 to 4525 kHz frequency range
is identical to that covered by the early models of the TBX-series
from 1939 and later.

That 300 to 600 kHz receiver coverage is also curious. Don,
can you tell by the tube lineup what type of receiver is used
in the TAV-4 (TRF, regen)?

This makes me think (a little) of the Army SCR-178/179 set, but
primitive as those sets were, the TAV is older technology.

Notice that the RT unit is "CAY-43002". (I wonder what system
got the nt-43001 designation.)

The set serial number is 9. Don's set is likely unique today.

Mike / KK5F
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