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FET conversion project

Discussion in 'CB Radio Forum' started by rabbiporkchop, Apr 20, 2017.

Page 3 of 4
  1. Apr 28, 2017 #21
    rabbiporkchop

    rabbiporkchop Road Train Member

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    Inside pic....
    [​IMG]
     
    rabbiporkchop, Apr 28, 2017
    rabbiporkchop, Apr 28, 2017
    #21
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  3. Apr 29, 2017 #22
    rabbiporkchop

    rabbiporkchop Road Train Member

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    Perhaps JFET might be more accurate?
    Screenshot_2017-04-29-21-51-41.png
     
    rabbiporkchop, Apr 29, 2017
    rabbiporkchop, Apr 29, 2017
    #22
  4. Apr 29, 2017 #23
    Ougigoug

    Ougigoug Heavy Load Member

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    Sound good to me!
     
    Ougigoug, Apr 29, 2017
    Ougigoug, Apr 29, 2017
    #23
  5. Apr 29, 2017 #24
    rabbiporkchop

    rabbiporkchop Road Train Member

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    I got to wait for Monday before I can bump into Jason to get his opinion
     
    rabbiporkchop, Apr 29, 2017
    rabbiporkchop, Apr 29, 2017
    #24
  7. Apr 29, 2017 #25
    Ougigoug

    Ougigoug Heavy Load Member

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    The clip is promising i don't see why it wouldn't sound good on the air?!?

    There is no doubt a difference between the fidelity and the range, will be nice to hear it with distance.
     
    Ougigoug, Apr 29, 2017
    Ougigoug, Apr 29, 2017
    #25
  8. Apr 29, 2017 #26
    rabbiporkchop

    rabbiporkchop Road Train Member

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    Should sound similar to palomar sl41 with filter and Heil pr40 without filter.
    Recording was through my talkback.
    Nobody local has an opinion worth listening to.
     
    rabbiporkchop, Apr 29, 2017
    rabbiporkchop, Apr 29, 2017
    #26
    Ougigoug Thanks this.
  9. Apr 30, 2017 #27
    Dirtymartini15x

    Dirtymartini15x Light Load Member

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    I'm looking forward to the on air tests personally.
     
    Dirtymartini15x, Apr 30, 2017
    Dirtymartini15x, Apr 30, 2017
    #27
    rabbiporkchop Thanks this.
  10. Apr 30, 2017 #28
    Ridgeline

    Ridgeline Road Train Member

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    Well it is an electret mic, unless you opened it up and changed the amp in it.
     
    Ridgeline, Apr 30, 2017
    Ridgeline, Apr 30, 2017
    #28
  11. Apr 30, 2017 #29
    rabbiporkchop

    rabbiporkchop Road Train Member

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    An electret mic contains a small JFET to amplify the signal coming from the microphone diaphragm; the specific JFET is selected by the manufacturer to ensure the microphone has the right gain and response. Usually these JFETs are chosen with the expectation of a relatively quiet environment, and trying to record a concert only results in a ton of distortion. By putting a resistor between the source of the JFET and ground of the microphone, it’s possible to reduce this distortion.
     
    rabbiporkchop, Apr 30, 2017
    rabbiporkchop, Apr 30, 2017
    #29
  12. May 1, 2017 #30
    rabbiporkchop

    rabbiporkchop Road Train Member

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    looks like I see one in this picture.
    Screenshot_2017-05-01-00-13-39.png
     
    rabbiporkchop, May 1, 2017
    rabbiporkchop, May 1, 2017
    #30
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