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6700 and WSJTX No Code - Help !

Jerry NY2KW
Jerry NY2KW Member ✭✭
Running Smart SDR on a dedicated i5 2GHz laptop with 2 external screens, no background apps except Avast antivirus, Win 7 Pro.
  

Latest Meinberg NTP installed and confirm to be working using Meinberg  Service Monitor

SSDR I am in DIGU, AGC-T off and adjusted to the knee
DAX all streaming correctly.   In WSJTX the meter reads about 25dB in quiet and just peaks to 60 dB on freq 7.074 (FT8).  Corresponding S meter on 6700 shows noise around S5 and FT8 transmissions 10 over.    I get occasional CQ's coming through  but with about dozen solid signals, it decodes only about 1 signal every 5th sequence.  I checked my 6700 freq stability with an external source and it appears rock steady as does the waterfall signals not wavering on the WSJT waterfall.  I then installed SSDR onto a superfast ASUS i7 laptop and ran SSDR remote (also Meinberg installed and working on ASUS) and also very few signals getting decoded.


Any other things for me to try?


Jerry NY2KW
  


Answers

  • Bob K8RC
    Bob K8RC Member ✭✭✭
    edited December 2018
  • WX7Y
    WX7Y Member ✭✭✭✭
    edited June 2020
  • Mike-VA3MW
    Mike-VA3MW Administrator, FlexRadio Employee, Community Manager, Super Elmer, Moderator admin
    edited December 2018
    Just some clarification.

    I assume that Bret mentioned to do a calibration to make sure the radio is on frequency.  There is no clock in the radio that would impact WSJTx.  

    For FT8, dial frequency isn't critical at all, just as long as you can hear the FT8 tones in the radio passband.

    The other thing to look at is to make sure that the audio bandwidth on WSJTx is set correctly (ask me how I know).

    Look at the FT8 waterfall in wSJTx and make sure that you see 3000 over to the right top.  You adjust this in the Bins/Pixel and for me, it is set to 4.  If this waterfall bandwidth is smaller, then that is the bandwidth you are going to receive (as in 1000) and you will miss a lot of signals.

    I hope that helps, Mike

    image
  • David Ahrendts
    David Ahrendts Member ✭✭
    edited December 2018
  • Paul - K6HR
    Paul - K6HR Member ✭✭
    edited December 2018
  • jerry stern
    jerry stern Member ✭✭
    edited October 2019

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