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10939Re: [softrock40] ICR-100 10.7MHz IF TAP Mod.

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  • Bill Dumke
    Apr 30, 2007
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      Kees,

      Can you send me a link to the errata sheet ? I couldn't find it.

      Thanks, Bill wa9pwr

      Kees & Sandy wrote:
      >
      > I went to the Elecraft site and .......AH, HA, there is an eratta
      > changing one of the 1uV pad resistors for both the XG1 and XG2
      > ....seems like R8 is supposed to be 1.24Kohm.
      >
      > Didn't do much...... with 1uV input to the PCR100 on 7.040Mhz,
      > it still reads 40dB on Rocky and the PCR100 attenuator still drops the
      > signal 20dB which is correct and verifies readings from the PCR100
      > antenna through the Rocky software. That would be -127dBm for a signal
      > that can still be copied down another 10dB or -137dBm. Nice little
      > wide range receiver setup.
      >
      > 73 Kees K5BCQ
      >
      >
      >
      > -- "Kees & Sandy" <windy10605@...> wrote:
      >
      > I guess I don't understand the concern about the PCR100 sensitivity
      > being down when using the output of L108 as a tap point because it's
      > the SDR signal you are interested in. If you want to use the PCR100
      > "as is" --AND-- the SR Lite SDR function ....without pulling/jumpering
      > the tap point, I will need another tap point. The center tap
      > (presently unused) on the input side of L108 works for that and does
      > not seem to have the 5-10dB PCR100 loss that a tap on the output side
      > has ....and you still benefit from the 230Khz PCR100 filter.
      >
      > Is there some way to make consistent measurements for comparison ? I'm
      > still at a loss to explain the observed signal level differences
      > between "50uV" and "1uV" off my XG2 Signal generator card. What do you
      > guys measure ? I've seen Bill Dumke's data only.
      >
      > 73 Kees K5BCQ
      >
      > -- "qrper723" <qrper72@...> wrote:
      >
      >
      > Hi all.
      >
      > I've finished my modification of PCR-100 IF-10.7MHz.
      > I put my data and photos into a Files -> JA9MAT - PCR100 10.7MHz IF TAP.
      > It works well and to be an all band SDR.
      >
      > Thanks Tony and Kees, 73 ja9mat Hidehiko.
      >
      >
      >
      >
      >
      > Yahoo! Groups Links
      >
      >
      >
      >
      >
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