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Re: [softrock40] Re: 6.3 TXRX

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  • aa9wqham@aol.com
    If the tip and ring are reversed in PSDR you can not tune out the unwanted image. In Winrad and Rocky you can do it in software. You are right though when you
    Message 1 of 9 , Dec 31, 2009
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      If the tip and ring are reversed in PSDR you can not tune out the unwanted image. In Winrad and Rocky you can do it in software. You are right though when you say it reverses tuning i.e. LSB/USB are reversed and tuning up tunes down and so forth
       
      Larry   
       
      In a message dated 1/1/2010 1:41:43 A.M. Eastern Standard Time, alan4alan@... writes:
       


      ----- Original Message -----
      From: <aa9wqham@aol. com>
      Subject: Re: [softrock40] Re: 6.3 TXRX

      I
      >If you can't get image rejection reverse the tip and ring connection.

      This does not affect image rejection but reverses the tuning.

      73 Alan G4ZFQ

    • Alan
      ... From: Subject: Re: [softrock40] Re: 6.3 TXRX ... image. In Winrad and Rocky you can do it in software. You are right though when you
      Message 2 of 9 , Jan 1, 2010
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        ----- Original Message -----
        From: <aa9wqham@...>
        Subject: Re: [softrock40] Re: 6.3 TXRX


        >If the tip and ring are reversed in PSDR you can not tune out the unwanted
        image. In Winrad and Rocky you can do it in software. You are right though
        when you say it reverses tuning i.e. LSB/USB are reversed and tuning up
        tunes down and so forth


        All that happens when reversing the connections is that the tuning is
        reversed. This happens on all the software. PDSR is the one that has no way
        of compensating.
        Reversing the connections only affects the small amount of image
        compensation provided by software. If the image rejection is not touched
        then the hardware (Softrock) will provide around 30dB rejection whichever
        way the audio is connected.

        73 Alan G4ZFQ
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