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Flex 6600 FT8 Forward Drive

Arvind Mallya
Arvind Mallya Member ✭✭
edited June 2020 in FLEX-6000 Signature Series
Maybe this has already been discussed but I'm unable to control the forward drive and the DAX audio TX to get an output past 50 watts without running into IMDs. The Flex 5000A on the other hand has no problems a nice clean output at 90 watt s. Any help is appreciated. I looked through the manuals to see how to optimize but it's limited to the forward drive and the DAX Tx control.image

Answers

  • Arvind Mallya
    Arvind Mallya Member ✭✭
    edited June 2020
    Here is my Flex 5000A with FT8 and a clean output at 90 watts. image
  • John - AI4FR
    John - AI4FR Member ✭✭
    edited December 2019
  • Arvind Mallya
    Arvind Mallya Member ✭✭
    edited June 2020
    Yes the vertical scale is different I know. The filter I suspect will attenuate the harmonics. I guess then I can drive it a bit harder?
  • Bob- W5TX
    Bob- W5TX Member ✭✭
    edited June 2020
    Be sure that the drive control in wsjt-x is turned up all the way
  • Arvind Mallya
    Arvind Mallya Member ✭✭
    edited December 2019
    I have it 3 notches down from top
  • John - AI4FR
    John - AI4FR Member ✭✭
    edited June 2020
  • Dudley WA5QPZ
    Dudley WA5QPZ Member ✭✭✭
    edited March 2020
  • Arvind Mallya
    Arvind Mallya Member ✭✭
    edited June 2020
    Dudley, Didn't quiet get that, so I do have both DAX on the display flag ON and so also on the side bar. I'll turn of the TX eq did not know it was ON. Is that what you are saying?
  • Arvind Mallya
    Arvind Mallya Member ✭✭
    edited December 2019
    Where is fake it mode in WSJTX? I don't see any FT8 activity in 60m anyway.
  • K1UO Larry
    K1UO Larry Member ✭✭✭
    edited December 2019
    FYI:  60M FT8 activity is mostly all on CH3 or 5.357Mhz  (DIGIU) and mostly a nighttime Band.  Propagation is kind of a cross between 40M and 80M Bands.
  • John - AI4FR
    John - AI4FR Member ✭✭
    edited December 2019
    Arvind, in wsjt go to file, then settings, then radio. You'll find it there. It really comes into play when you are near the TX band edge say 200hz, 2950Hz, etc. Also, do not use it if you have the slice locked.

    Dudley, I was under the impression that the TX Eq was disabled when in DIGU mode in SSDR. Am I mistaken?
  • Paul_Mills
    Paul_Mills Member ✭✭
    edited December 2019
    Looks to me like one signal is centered in your transmit bandpass, and the other is on the edge, this may have an effect on the quality of your signal.
  • Arvind Mallya
    Arvind Mallya Member ✭✭
    edited December 2019
    Larry, my current WSJX-FT8 version 2.1.2 has no drop down for 60 meters.

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