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Re: [softrock40] SoftRock, pseudo-balanced output

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  • Alex, VE3NEA
    For best results, this should be implemented on the same PCB with the LNA. Also, a bipolar Vcc in SoftRock would be a big plus, this might improve the dynamic
    Message 1 of 4 , Nov 25, 2005
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      For best results, this should be implemented on the same PCB with the LNA.
      Also, a bipolar Vcc in SoftRock would be a big plus, this might improve the
      dynamic range by 10 dB. The saturation point of Delta-44 is 14 dBu (about 11
      Vpp), but the LNA powered with 5V can produce only about 3 Vpp.

      What about a bipolar power supply kit for SoftRock?

      73 Alex VE3NEA


      > Very clever, it could be implemented in a new breakout box for the
      > Delta-44 and be of minimum impact to the radio. If implemented in a
      > separate box with PC connections on one side, radio connections on
      > the other side using 1/8" connectors it could be used with any sound
      > card. The only fly in the ointment would be a need +- power supply
      > voltage into the box. The circuits should be there for radio outputs,
      > as well as inputs.
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