[R-390] Preproduction R-390

[Danny Lunstrum]

This is my first message to the group.  I have been a subscriber and =
have been reading messages for some time.  I went to a hamfest last =
Sunday and bought what I thought was an ordinary R-390 (non-A) receiver. =
 The only thing that was out of the ordinary was the serial number- =
"PP-2".  When I got home with the unit I noticed a poorly stenciled =
notice on the side.  I cannot make out every word in it, but it sounds =
like this is a "Preproduction" R-390".  Here is the what is stenciled on =
the side except for the few words that are illegible.  "This equipment =
was tested as a preproduction sample by the Signal Corps Engineering =
Laboratories.  It is ??  ???? intact without alteration or improvement =
of any kind for use by the Signal Corps ???? by ???."  The question =
marks indicate words I cannot make out.  The order number is =
14214-PH-51-93 and was manufactured by Collins Radio Company.  The =
ballast tube, V-512, is marked 2HTF11B and is missing.  The front panel =
lettering is punched, not silkscreened.  The power supply has a =
nomenclature tag with the serial number PP-7 stamped on it.

Can anyone give me any more information on this radio?  I would =
appreciate it.

Thank-you,
Dan


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