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1969 mosfit final replacement

Discussion in 'General CB Services Discussion' started by schmuck, Oct 27, 2009.

  1. schmuck

    schmuck Member

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    does anybody know what kind of final to replace a 1969 final with? and what is a RF520 for? thanks


     

  2. MisterFatty

    MisterFatty Poppin Fresh!

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    The IRF520 is one possible replacement, though its not a simple plug-n-play. You will need to make additional changes, many of which are already written up as mods. Here is a decent place to start MOSFET Experiment Information , The ERF-2030 mentioned is still available, but typically the cost is much more then the IRF-520 which can be had for well under a buck each.

    If you want/need further info more details will be needed.
     
  3. 9C1Driver

    9C1Driver Sr. Member

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    I would say replace it with another 1969 final. You might try and find afew spare 1969's to stock up on for future repairs.
     
  4. King Mudduck

    King Mudduck FEAR THE DUCK!

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    Hell,finding 1969 final are like finding hens teeth! Do the mosfet upgrade and you wont have to worry about it the next time one goes out on you.
     
  5. W5LZ

    W5LZ Crotchety Old Bastard

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    Then again, why did it go out on you to start with? You might think about 'fixing' that too.
    - 'Doc
     
  6. mackmobile43

    mackmobile43 Jock Supporter

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    I DON'T THINK SO
     
  7. 9C1Driver

    9C1Driver Sr. Member

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    Yup, their out there. The mosfets are less then a dollar, if you do the mosfet changeover there are other things that need to be done for it to work. It's not just an even swap out.
     
  8. ADE

    ADE Member

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    LUCKY MOMENT

    Now try getting an original 2sc2312...oh yeah call for price and availBILITY!
    LIKE EVERYTHING ELSE OUT THERE based on supply and demand,if the manufacturer decides thats it no more then all were going to get are nasty cheap foreign copies of semiconductors which just dont come up to scratch! which means we will be getting out the heatsink compound more often!
    good dx all
    ADE:D
     
  9. Cityboy

    Cityboy Active Member

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    First of all which radio did this come out of and then we can possibly recommend a replacement. If it is a 1969 I would venture to say it is out of a Galaxy,Ranger,Connex and the sort. Give us the make and model and then we can say which is best. The mosfet is cheap and requires some good soldering and desoldering skills, which if you are not careful can burn traces and tear up a radio. The mosfet will not offer you much more in the wattage department either to justify the conversion. The 2sc2166 could do almost the same as the 1969 and the very few watts lossed will not even be heard at the other end; and you wont have to tear into your radio to put it in. It is a drop in replacement.
     

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