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Where to buy trimmer capacitors?

Discussion in 'Home Brew' started by wambulance, Oct 11, 2009.

  1. wambulance

    wambulance Member

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    Hey folks, anyone know where to get some cheap trimmer capacitors online for AM (mediumwave) tuning? Something small and in the 10-265pf range there or abouts?

    I found one place but they want $3.95 a piece for tiny ones. Was curious if someone would know where else to look (other than taking apart radios, I actually want to buy like 30 of these).

    Thanks in advance.


     

  2. Crusher

    Crusher Well-Known Member

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    Checkout RFParts.com, you need something like a 464 or a 465 trimmer look up on there webpage. They are like maybe $1.50 each maybe.
     
  3. wambulance

    wambulance Member

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    Hey thanks! Great site.

    Question though, the pf range is a bit off on those. One I've seen specifically for AM (mediumwave) listed 10-265.

    Part 464 has 45-280
    Part 465 has 75-380

    Are these out of range for AM tuning? I'm still learning about this stuff.
     
  4. Crusher

    Crusher Well-Known Member

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    What are you building or using it for? If it is an amp, input or output?
     
  5. wambulance

    wambulance Member

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    Just standalone AM loop antennas.
     
  6. Captain Kilowatt

    Captain Kilowatt Professional Amateur
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    The exact amount of capacitance required will depend on the inductance of the loop. If one varies then the other must vary the other way to compensate. Go with the 45-280 unit.
     
  7. wambulance

    wambulance Member

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    Right on. Thanks so much.
     

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