The Best Technical Reference for the R390A/URR free PDF

Discussion in 'Tuners' started by transmaster, Aug 20, 2014.

  1. R390a

    R390a AK Member

    Messages:
    169
    Location:
    Texas
    Yeah, Transmaster, it was an NTIS librarian lady that I was corresponding with back in the early eighties. I had already been ordering from them. Given that it was a new publication at that time I figured that it would be hard to obtain. Also, after a period of time and no manuals arriving, I began to think that there was maybe some hanky panky going on, especially after I received the bill for $250. But they are beautiful, fresh, original manuals which I still have and are worth it to me. Covers are heavy blue colored plastic.

    By the way, if memory serves, those destroyers were built in a Mississippi shipyard.
     

     

    Please register to disable this ad.

  2. raTcheTman

    raTcheTman New Member

    Messages:
    10
    Location:
    The Mountain West
    I just picked up some vintage military gear from a neighbor that recently passed away. here is one.
     

    Attached Files:

  3. raTcheTman

    raTcheTman New Member

    Messages:
    10
    Location:
    The Mountain West
    I would appreciate any info on this. thanks
     
  4. radioactive

    radioactive tube gear fanatic Subscriber

    Messages:
    8,309
    Location:
    winnipeg , manitoba
    A model number would help?
     
  5. Punker X

    Punker X AK Subscriber Subscriber

    Messages:
    3,917
    Location:
    Panic in Detroit
    Just a picture of that black tag on top.. Should say the model number and what it is.
     
  6. raTcheTman

    raTcheTman New Member

    Messages:
    10
    Location:
    The Mountain West
    I have a bunch of military stuff I just got.
     

    Attached Files:

     

    Please register to disable this ad.

  7. Punker X

    Punker X AK Subscriber Subscriber

    Messages:
    3,917
    Location:
    Panic in Detroit
  8. raTcheTman

    raTcheTman New Member

    Messages:
    10
    Location:
    The Mountain West
    How about this
     

    Attached Files:

  9. raTcheTman

    raTcheTman New Member

    Messages:
    10
    Location:
    The Mountain West
    Another one
     

    Attached Files:

  10. raTcheTman

    raTcheTman New Member

    Messages:
    10
    Location:
    The Mountain West
    Punker X. Thank you for the information! That was a great source of information I couldn't find it myself.
     
  11. transmaster

    transmaster Addicted Member

    Messages:
    7,364
    Location:
    Cheyenne, Wyoming
    The installed tuner unit determines this receivers frequency range. The receiver ultimantly has a tuning range of 40 to 3400 MC (MHz). If I read the dial on the installed tuning unit you have Tuning unit TN-1B; 40 to 105 MC.

    Oh goodie you have the remote units, and extra tuner modules, for the operation of the Naval transmitters. Suprisingly one of the most valuable things you have is the "dog bone" interconnects, not many have survived. The tube compliment is common easy and to get.

    rdo-01.JPG
     
    Last edited: Mar 3, 2018

     

    Please register to disable this ad.

  12. transmaster

    transmaster Addicted Member

    Messages:
    7,364
    Location:
    Cheyenne, Wyoming
    This receiver would be an interesting restoration project. The best place to go for information, and help in it's restoration is the Military Radio Collector Association (MRCA). Should you wish to sell it this would be a good place to go as there are collectors there who specialize in US Navy radio equipment. http://www.mrca.ar88.net/
    here is their mail reflector. Their mail reflector is rather primative but it works. http://mailman.qth.net/mailman/listinfo/mrca

    manual
    http://www.mediafire.com/file/ncxupn9c7m9eswj/RDO+Manual.pdf
     
    Last edited: Mar 3, 2018
  13. raTcheTman

    raTcheTman New Member

    Messages:
    10
    Location:
    The Mountain West
    Thank you Transmaster!! Another pic.
     

    Attached Files:

  14. raTcheTman

    raTcheTman New Member

    Messages:
    10
    Location:
    The Mountain West
    What's this?
     

    Attached Files:

  15. I LIKE MUSIC

    I LIKE MUSIC Super Member

    IIRC, it is a model RAO3 shortwave receiver, from about 1943.
     
    transmaster likes this.
  16. transmaster

    transmaster Addicted Member

    Messages:
    7,364
    Location:
    Cheyenne, Wyoming
    I like the HP 400R you have. A great VTVM
     

     

    Please register to disable this ad.

  17. radioactive

    radioactive tube gear fanatic Subscriber

    Messages:
    8,309
    Location:
    winnipeg , manitoba
    you would be correct.
     
  18. raTcheTman

    raTcheTman New Member

    Messages:
    10
    Location:
    The Mountain West
    Transmaster, can you tell me what the HP 400R is? I really don't know anything about this stuff. i got if from a neighbors estate when he passed a few months ago.

    Here is a lot of the stuff I got. 20180414_182044.jpg 20180414_182049.jpg
     
  19. raTcheTman

    raTcheTman New Member

    Messages:
    10
    Location:
    The Mountain West
  20. danj

    danj modern primitive

    Messages:
    4,844
    Location:
    Somewhere in Oregon
    Oh man, the Holy Grail of radio receivers. As an ET in the Navy back in the 70s, I used and worked on the R390 and respect their capabilities a great deal. We had one in our Comm office that we would listen to after hours and, wow, there was little that wouldn't pick up. Back when I was working and could afford it, I tried to buy one off ebay and I lost the bidding war by a few $.

    I have a nice Grundig and it's a very fine receiver but can barely touch the capabilities of the 390.

    If I won the big lottery I would gladly pay $30K for one. Alas, these days as a retired technician whose pension got swallowed during the Bush depression, I can only afford to look at pictures.
     

Share This Page