Stancor ST-201-A Mystery Transmitter

[Don Buska]

I picked up (pre-arranged from Tom K9ZVE) a Stancor ST-201-A transmitter
at the South Milwaukee Swapfest this last weekend. This radio came from
the estate of an ex Stancor Chief Engineer. I have never seen an
advertisement for this transmitter in the magazines (I checked QST, CQ,
Radio) nor does it appear in any of the current vacuum tube transmitter
books (Rippen or Moore). By the model number assignment I'd place it at
around 1946 for time of manufacture. I base this date on the fact that
the ST-202A was introduced in 1947 and the ST-203A in 1948. These last
two transmitters were advertised extensively over many years in the ham
magazines and I own both of them. I'm beginning to believe that this
model never made it to formal production and perhaps this is one of few
prototypes created. One important fact that leads me down the prototype
path is that if you look at the close up label pictures (on my web site)
of the front panel you will notice that they are paper! This paper is
glued on the metal front panel. You will also notice that there are some
white circles around the edge of the paper that appear to be hole guides
for the panel mounting screws. However, the mounting screws are located
at other positions and end up going right through the manufacturer and
model labeling. I don't have any paper work on this transmitter, but here
is some information obtained from visual inspection:

Weight - About 75 lbs.
Size - 13" wide X 9" high X 19" deep
Modes - AM and CW
Major Tubes - 4D32 final, P-P 807 Modulators, also some 7 pin miniature
tubes, like two 6AQ5's in what appears to be the oscillator section.

So now my plea! If you have any knowledge of or information on this
transmitter please email or write me about it. I'd sure hate to have to
trace out the entire circuit, but if need-be I'll do it! One of my first
duties will be to remove the front panel and scan it into a computer. I
want to dupicate the front panel onto a better and washable milar film. I
will not destroy the original, but create a completely new front
panel and keep the old one stored away in a secure place. This will also
allow me to move the labeling down that is currently covered by the
mounting screws.

By-the-way, this transmitter was operational at one time. I can see a
discoloration on the top flip-cover from the heat of the larger tubes.

Pictures of the transmitter are on my website at http://www.qsl.net/n9oo

73

Don N9OO


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**                                                                **
**  Don Buska N9OO (EN62bo)            Manager - Service Center   **
**  4805 64th Ave. Kenosha, WI 53144   Advantest America Inc.     **
**  (414)654-0072                      (847)821-3393              **
**  d.buska at aaiate.com             fax (847)634-2872              **
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