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Re: [softrock40] Re: VNA

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  • Richard Bown
    ... -Very interesting approach Tom, It would be nice to see some linux software to drive it as well 73 Richard- ************************** Registered Linux
    Message 1 of 13 , Apr 1, 2007
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      tom_iphi wrote:
      >
      >
      > > Looks interesting Tom, how have you overcome the spurii from the
      > > LO & RF DDSs, or is it the case that they can be ignored as not to
      > > effect the
      > > measurement accuracy ??
      > >
      > Hi Richard,
      >
      > In fact, I want the spurs, as they extend the frequency range of my
      > VNWA to beyond fclock.
      > As I run the LO DDS and RF DDS on mutually different clocks, the
      > unwanted spurs don't interfere with the measurement on the wanted spurs.
      > BTW: I call the spurs aliases.
      >
      > 73, Tom DG8SAQ
      >

      -Very interesting approach Tom, It would be nice to see some linux software to drive it as well

      73 Richard-
      **************************
      Registered Linux user 365161
      Ham Call G8JVM
      http://software-radio.org.uk
    • Bill Dumke
      Tom, Sounds like you used the problem to solve the problem. Good Work! Bill wa9pwr
      Message 2 of 13 , Apr 1, 2007
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        Tom,

        Sounds like you used the problem to solve the problem. Good Work!

        Bill wa9pwr

        tom_iphi wrote:
        >
        >
        > > Looks interesting Tom, how have you overcome the spurii from the
        > > LO & RF DDSs, or is it the case that they can be ignored as not to
        > > effect the
        > > measurement accuracy ??
        > >
        > Hi Richard,
        >
        > In fact, I want the spurs, as they extend the frequency range of my
        > VNWA to beyond fclock.
        > As I run the LO DDS and RF DDS on mutually different clocks, the
        > unwanted spurs don't interfere with the measurement on the wanted spurs.
        > BTW: I call the spurs aliases.
        >
        > 73, Tom DG8SAQ
        >
        >
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