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6109Re: [softrock40] Use of DDS-60

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  • T Hoflich
    Sep 18, 2006
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      I decided to look one more time and found it.


      Tom KM5H

      --- ian mcphedran <gm3gtq@...> wrote:

      > Hi Tom, I am trying to build a dds-60 using a 230v
      > Hexacon SMD soldering iron I bought in the U.K. from a
      > supplier of SMD parts who no longer is in business. The
      > tip is o.k. for most smd things but the 28 pin analog
      > devices chip is too closely spaced for it. Can I ask what
      > is the iron you used for your assembly work?
      > Ian Gm3GTQ
      > km5h <km5h@...> wrote:
      > I finally finished a "production" version of a
      > Softrock receiver. By
      > production, I mean everything in one box with proper
      > connectors
      > instead of a bunch of pieces scattered around the bench.
      > In the box
      > is a SR-6, a DDS-60 and a MS-DDS-60 (Controller).
      > I am using a SoundBlaster MP3+ so I can use it with any
      > computer with
      > USB (especially laptop).
      > The Rocky display looks the same with the DDS-60 or the
      > 28.224
      > crystal. The output of the DDS-60 directly replaces the
      > crystal via a
      > short piece of small coax.
      > One of the nice features of the controller is that it
      > displays 7.056
      > but actually puts out 28.224 for the SR-6.
      > You set the center frequency on the controller. Then
      > transfer that
      > number (like 7.056) on the display to the appropriate
      > field in Rocky
      > setup.
      > The DDS-60 goes to 60MHZ so this configuration will work
      > to 15 MHZ.
      > This includes lots of ham bands, short wave bands, and
      > most IF's. Now
      > I need to do some work on switching the band pass filter
      > for higher
      > frequency coverage than the "stock" SR-6.
      > Now, if Rocky only supported AM and maybe FM (hint hint).
      > There have been several questions lately about the use of
      > the DDS60.
      > I have found it very successful.
      > http://www.amqrp.org/kits/dds60/index.html
      > http://kd1jv.qrpradio.com/msdds60/msdds60.HTM
      > Tom KM5H
      > ---------------------------------
      > All new Yahoo! Mail "The new Interface is stunning in
      > its simplicity and ease of use." - PC Magazine
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