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Thread: Shure 97U29 / S-36

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  1. #1

    Default Shure 97U29 / S-36

    I think I asked this before but I'm not sure so bear with me. Thanks. This is a desk mic that was on a Motorola business band rig back in the 70's. I belive the 97U29 is the model number and the S-36 is the stand. What I want to know is what the inpedance is and is it dynamic, electret or what? If it's a decent mic I might try it on my Kenwood hybrids. Thanks again, and I believe I have at least one electro-voice 638 I may sell if the price is right. Make me an offer! Richard KM5WX@bellsouth.net

  2. #2

    Default

    Yes, you asked this question on April 15, 2012 at eHam.net Boatanchor forum
    http://www.eham.net/ehamforum/smf/in...?topic=82379.0

    The 1950s era model 97u29 refers to the Shure 510MD Hercules and S36 stand which were sold as
    the Fixed-Station Dispatcher microphone to many LMR mfg (GE, RCA, Motorola, etc.).

    Shure 410 and 510 series -- Manual
    http://www.shure.com/idc/groups/tech...pro_410_ug.pdf
    Shure 510MD series -- Manual
    http://www.shure.com/idc/groups/publ...o_510md_ug.pdf

    Shure made this Style in TWO versions,
    a MID-Z, 4,000 ohm (Rudak), Controlled Reluctance element and

    a HIGH-Z 100,000 ohm (Hercules), Controlled Magnetic element.

    Current Shure classic designs (in production)
    http://www.shure.com/americas/products/microphones

    This microphone can be found on many web sites.
    http://vintagemike.wordpress.com/201...c-model-97u29/

    PHOTOGRAPHS are more useful in positive ID of OEM microphones.
    97u29.jpg
    Last edited by W9GB; 05-11-2012 at 01:06 PM.

  3. #3

    Default

    Thanks Greg, I thought I had asked before but the short term is gone if you know what I mean!!HIHI Thanks for the info. The mic was in a box when I got it. It's in real nice shape so I thought I'd look for a use for it. Thanks again es 73 Richard

  4. #4

    Default

    Quote Originally Posted by KM5WX
    The mic was in a box when I got it. It's in real nice shape so I thought I'd look for a use for it.
    It would be a nice microphone for that Vintage look of a 1950s amateur radio station.
    Now you need that classic Boatanchor to pair with it !

  5. #5

    Default

    Well I have a Drake RV-4c with the rv-4 remote vfo. The ms-4 speaker and matching power supply. Or several Kenwood hybrid rigs. Which do you suggest. Oh I just noticed it's low impedance. What will happen if I try it. no work or work poorly? Thanks again Richard KM5WX

  6. #6

    Default

    I just noticed it's low impedance.
    Did you actually look at the internal Shure sticker on the microphone element,
    to see which one is installed?

    IF it is a low impedance mic element, What will happen if I try it?
    No work or work poorly?
    Whether the electromagnetic wave is 60 Hz power frequency; audio/music (200-20,000 Hz) or
    Radio Frequency (RF) ... it is just a matter of "impedance matching" !!

    For audio, you use audio transformers. Heil sells he XT-1 for this purpose.
    Mouser has catalog pages on various models.
    Last edited by W9GB; 05-13-2012 at 09:08 PM.

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