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Re: Amplifier

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  • James R. Elledge
    I am also in the process of building one, no problem finding all of the parts. Filter board is finished, still working on the amp board. Jim - KB2XJ ...
    Message 1 of 9 , Aug 2, 2008
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      I am also in the process of building one, no problem finding all of
      the parts. Filter board is finished, still working on the amp board.

      Jim - KB2XJ

      --- In softrock40@yahoogroups.com, "Jose Bonanca" <jbct1aos@...>
      wrote:
      >
      > I was one to ask for one amplifier. But since it is not a kit it is
      wordless
      > since we here cannot find the needed parts to assemble the
      amplifier.
      >
      > Anyway thank you for posting.
      >
      > 73
      >
      > On Fri, Aug 1, 2008 at 11:30 PM, Stephen M. Murphy <murphys@...>
      > wrote:
      >
      > > A week or two ago, someone had asked about an amplifier to use
      with the
      > > Softrocks... I apologize for the late reply, but:
      > >
      > > I'm using the MOSFET amp designed by WA2EBY and described in one
      of the
      > > ARRL publications (I found the article on-line, I think it was
      from a
      > > QEX in '99). I modified (very minor) the original circuit for 12V
      > > operation, and the RXTX6.2 will drive it to about 20W on 20, 30
      and
      > > 40m. I haven't tried other bands, but will when I get my RXTX6.3,
      hi.
      > >
      > > As far as I know, this isn't available as a 'kit', though Far
      Circuits
      > > does sell the boards and Amidon has kits (cores and enameled
      wire) for
      > > the inductors/transformers. It is something of a challenge to put
      > > together (I could not find anything showing what goes where on the
      > > boards, so I blew up photos from the article and matched 'em up
      with the
      > > schematic), but it does work and is relatively cheap (I figure I
      have
      > > about $100 into it using new and 'junkbox' parts).
      > >
      > > 73
      > >
      > > Steve N8NM
      > >
      > >
      >
      >
      >
      > --
      > Jose Bonanca (CT1aos)
      >
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