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Robyn T-240D alignment points?

Discussion in 'General CB Services Discussion' started by Crambone, Jul 1, 2020.

  1. Crambone

    Crambone Active Member

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    looking for the alignment points or procedures for Robyn T-240D?
    Or if you have a Robyn T-240D Sams Photofacts 187 you might want to sell?


     

  2. tecnicoloco

    tecnicoloco Tweaknician in Training

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  3. midnight special

    midnight special Well-Known Member

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    all i can remember is the tune and load is in the back left side and the modulation is right side behind speaker ...all these adjustments are on top chassis not underneath,,,,that is all i ever adjusted to make mine work into a pdx400,, i had back in the early 80s,,,,,,,
     
  4. Crambone

    Crambone Active Member

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  5. Crambone

    Crambone Active Member

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    Thanks, I see the 2 power tune points but wasn’t sure of the modulation so that’s 1 down.
     
  6. Lkaskel

    Lkaskel Active Member

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    I hope this helps......
     

    Attached Files:

    bobl9355 and Shadetree Mechanic like this.
  7. Shadetree Mechanic

    Shadetree Mechanic 808 On The North Side of Dover

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    I think Secret CB has some info about it too.
     
  8. Crambone

    Crambone Active Member

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    YES THANK YOU!!,
     
  9. nomadradio

    nomadradio Analog Retentive

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    Now all you need is some toluene to soften the hard white enamel the factory dribbled onto all the tuning slugs. This stuff did a bangup job of preventing the slugs from slipping out of place while traveling across the Pacific ocean on its trip from Japan.

    But it's hard, and glues the brittle ferrite tuning slugs firmly in place. Resist the impulse to just keep twisting the alignment tool harder until you hear a "CRACK!" sound. That sound means the slug has now fractured. After this happens, twisting the alignment tool simply forces the broken halves of the slug outwards against the inside of the coil form. Like the centifugal clutch in a moped.

    Bad juju when that happens. Be very stingy dribbling toluene into the coil forms. Too much of it and the glue holding the coil from the the base will come loose. Breaks the wires inside the metal can when that happens.

    These radios perform reasonably well when they're aligned properly. Changing a tube connected to one or more of these slug-tuned circuits will usually change the peak adjustment on that coil. Don't change tubes that aren't bad. Just muddies the water.

    73
     
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  10. Shadetree Mechanic

    Shadetree Mechanic 808 On The North Side of Dover

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  11. Shadetree Mechanic

    Shadetree Mechanic 808 On The North Side of Dover

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  12. Shadetree Mechanic

    Shadetree Mechanic 808 On The North Side of Dover

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  13. Crambone

    Crambone Active Member

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    Thanks for the heads up, do you need straight toluene or does something like nail polish remover work as it’s toluene based?
     
  14. Crambone

    Crambone Active Member

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    Shadetree Mechanic likes this.
  15. Crambone

    Crambone Active Member

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    Shadetree Mechanic likes this.

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