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Thread: Ten tec century 22 mod, 579 finals.

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  1. #1
    Join Date
    Jul 2009
    Location
    Barberton Ohio
    Posts
    7

    Default Ten tec century 22 mod, 579 finals.

    I just came across a century 22 and would like to get it back on the air but the finals are out i think. I called ten tec and they say the finals mrf 475 are not availble anymore. Is there any sub. For that number? I don't know if the rig is worth fixing but it sure looks nice and receives great.

  2. #2

    Default

    MRF-475 crosses to a NTE/ECG-236 which is used as the generic replacement final output transistor in 11m SSB radios
    using transistors such as 2SC1969, 2SC2312c etc...

    There is a company called Eleflow that has been manufacturing replacements for what
    the original manufacturers now consider "obsolete" transistors And they are manufacturing
    replacements for the 2sc1969 & 2sc2312.

    I have only heard good results from people posting about the new manufactured parts

    The only authorized US distributor is a guy on E-Bay that goes by Weazle66

    http://www.ebay.com/itm/2SC2312-ELEF...item416848a99f
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  3. #3

    Post

    NO REASON to go overseas (UK eBay), when part is sitting in USA warehouses.

    Communication Concepts, Inc. (CCI) carries the part for their amplifier kits. (Ohio).

    Call RF PARTS ..... MRF 475 available for $ 9.95 . They also have Matched Pairs.
    http://www.rfparts.com/transistors_MRF-TP.html#MRF401

    MRF475 -MOT Motorola 9.95
    MRF475-MP -MOT Motorola; Matched Pair 27.00

    Orders and Information
    (800) 737-2787
    (760) 744-0700


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    Technical Help
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    Tech Help is NOT available
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    435 South Pacific Street
    San Marcos, California 92078
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    BTW, ASI also has copies of the Motorola dies to make this RF Part
    http://www.advancedsemiconductor.com/pdf/mrf475.pdf
    Last edited by W9GB; 08-01-2012 at 05:18 AM.
    We keep moving forward, opening new doors, and doing new things, because we're curious and curiosity keeps leading us down new paths. -- Walt Disney

  4. #4

    Default

    ASi is a wholesaler selling chinese made parts. My understanding.
    Clif Holland KA5IPF
    www.avvid.com

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