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Re: [softrock40] PA matching

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  • uli
    Hi, I have SoftRock V6.2 (40/30m) with QRPproject PA. You can find a schematic, how to connect this PA to the SoftRock here:
    Message 1 of 5 , Mar 1, 2010
    • 0 Attachment
      Hi,

      I have SoftRock V6.2 (40/30m) with QRPproject PA.
      You can find a schematic, how to connect this PA to the SoftRock here:
      http://dj9cs.raisdorf.org/SDR-SoftRock-07.html .Schematic with red line
      at the end of the site (most in german language).
      T2 is 2x4 turns bifilar.

      Have success

      73
      Uli
      DF5SF


      >
      > Hi
      > I have just finished to build a PA2008 10W amplifier from QRPproject (kit by DK1HE) to amplify the 6.3 TX/RX output - This PA needs only 10 mW INPUT , so I don't need the full power of the usual TX/PA module - My idea is to build only a part of one TX/RX module ending with the 2N2222 as a driver for the 10MW PA, without filter, as I have also added an switchable LP filter (another kit by HFproject K5OOR)- Can any specialist confirm the 2N2222 will give the 10mW and suggest how to wire the T201 transformer in order to get a broadband module ? Thanks for yr help
      >
      >
      >
      > ------------------------------------
      >
      > Yahoo! Groups Links
      >
      >
      >
    • Pascal
      Hi Uli, Thanks for the link - I will try this way, it seems simple and without risk 73
      Message 2 of 5 , Mar 1, 2010
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        Hi Uli,
        Thanks for the link - I will try this way, it seems simple and without risk

        73

        --- In softrock40@yahoogroups.com, uli <uli@...> wrote:
        >
        > Hi,
        >
        > I have SoftRock V6.2 (40/30m) with QRPproject PA.
        > You can find a schematic, how to connect this PA to the SoftRock here:
        > http://dj9cs.raisdorf.org/SDR-SoftRock-07.html .Schematic with red line
        > at the end of the site (most in german language).
        > T2 is 2x4 turns bifilar.
        >
        > Have success
        >
        > 73
        > Uli
        > DF5SF
        >
        >
        > >
        > > Hi
        > > I have just finished to build a PA2008 10W amplifier from QRPproject (kit by DK1HE) to amplify the 6.3 TX/RX output - This PA needs only 10 mW INPUT , so I don't need the full power of the usual TX/PA module - My idea is to build only a part of one TX/RX module ending with the 2N2222 as a driver for the 10MW PA, without filter, as I have also added an switchable LP filter (another kit by HFproject K5OOR)- Can any specialist confirm the 2N2222 will give the 10mW and suggest how to wire the T201 transformer in order to get a broadband module ? Thanks for yr help
        > >
        > >
        > >
        > > ------------------------------------
        > >
        > > Yahoo! Groups Links
        > >
        > >
        > >
        >
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