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  • Thank you, Paul and Peter, you are correct. I cant understand why I did't see that Noise blanker was selected. Normally I never use Noise blanker W or N, only sometimes NBV with very low level settings. So I did not low level setting. Now I also understand, why adding a strong signal max +- 50 kc from receive frequency made rcceived signals clean : max level in bandwidth of NBW was...
    f17ek@... Nov 7, 2013
  • Perseus sounds like overloaded receiver and waterfall shows waterfall with non-existig singals. This occurs only with perseus 4.1a software. perseus 4.0b software works correctly. wav files recorded from bote 40.b and 4.1a show correct signals replayed by perseus 4.0b and false signals replayed by 4.1a I include screenshots of Perseus 4.0b and 4.1a replaying the same wav file...
    Erwin Kipp Nov 7, 2013
  • I will try with external EMU 0202 tomorrow, but I don't think the effect is sound cstd related because- I see the effects in waterfall diagramm When I use perseus 4.0b software (no USB3) waterfall diagram and audio is clean. Erwin ---In perseus_SDR@^$1, wrote: Well, I would suspect your audio device. Are you using the on-board audio or do you have an add-in card? Might want to...
    f17ek@... Nov 6, 2013
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  • Thanks for the info in my case disable xHCI no success but problem seems only to exist using software Perseus 4.1b Perseus 4.0b and HDSDR 2.70 work correctly. The problem seems now not to be USB related. When I record clean signal to wav file with perseus 4.0b and play the wav file with perseus 4.1a it is distorted. When I record distorted signal from perseus 4.1a to wav file and...
    f17ek@... Nov 5, 2013
  • Nwe information: Perseus software 4.0b works correctly, HDSDR 2.70 works correctly and uses actual ExtIO both seem to have same perseususb.dll Perseus software 4.1a does not work correctly it uses newer perseususb.dll maybe there is a compatibility problem to win8.1 or to Haswell processors / computers. Erwin DF3ZW ---In perseus_SDR@^$1, wrote: additional test: HDSDR works...
    f17ek@... Nov 5, 2013
  • additional test: HDSDR works correctly ---In perseus_SDR@^$1, wrote: Hello Leif, Dithering, attenuator os sampling rate do not change the effect. Also CPU load seems to have no influence. 73, Erwin ---In perseus_SDR@^$2, wrote: Hello Erwin, Do you see any difference when switching dither on/off ? 73 Leif / SM5BSZ > The effect shows worst, when there are many signals with similar...
    f17ek@... Nov 3, 2013
  • Hello Leif, Dithering, attenuator os sampling rate do not change the effect. Also CPU load seems to have no influence. 73, Erwin ---In perseus_SDR@^$1, wrote: Hello Erwin, Do you see any difference when switching dither on/off ? 73 Leif / SM5BSZ > The effect shows worst, when there are many signals with similar levels close together, like actually in CW contest. Adding a constant...
    f17ek@... Nov 3, 2013
  • Hello Roelof, I did not try different software., but I tried all 4 USB ports (2 USB2, 2 USB3) Available BIOS settungs concerning USB are: xHCI Mode Smart Auto change has no effect HCI1 enabled when disabled, Perseus is not recognized Bios level USB enabled change has no effect 73, Erwin ---In perseus_SDR@^$1, wrote: Hello Erwin, I guess that the sample rate does not effect it. It...
    f17ek@... Nov 3, 2013
  • Hello Roleof, In my case the problem is not related to the power splitter, same effect when I connect antenna alterantively to either receiver. The effect shows worst, when there are many signals with similar levels close together, like actually in CW contest. Adding a constant signal i. e. 20 dB stronger than antenna signals reduces the effect very much. with s9+50 signal added...
    f17ek@... Nov 3, 2013
  • ...only battery), you have the same problem? Roberto Zinelli (IW4ENS) Inviato da OldPhone Il giorno 03/nov/2013, alle ore 01.33, " f17ek@^$2.. " < f17ek@^$3.. > ha scritto: After forcing Win8.1 64bit to load unsigned drivers on my i4-4010u notebook Perseus is working...
    f17ek@... Nov 3, 2013