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For FT-8 TX Settings

W9ILY
W9ILY Member ✭✭
edited June 2020 in SmartSDR for Windows
I have the 6500 and would like to know if there are preferred TX equalizer settings for FT-8? Should it even be turned on?

Answers

  • Jim Gilliam
    Jim Gilliam Member ✭✭
    edited June 2020

    That's a good question. I have wondered if the TX equalizer is bypassed when using the DAX.


  • Ken - NM9P
    Ken - NM9P Member ✭✭✭
    edited April 2018
    Dax in and of itself -- NO.  But when using DigU/DigL the EQ and Processor are turned off.  but watch the audio input levels.  Digital sigs don't like overdrive...
  • WK2Y
    WK2Y Member ✭✭
    edited June 2020
    No equalizer. Flat across.  No compression either.  I know you can still highlight the buttons and it seems to me that the equalizer is not by passed using DAX, but I can not confirm.  
    73,
    Bob, WK2Y
  • Tim - W4TME
    Tim - W4TME Administrator, FlexRadio Employee admin
    edited April 2018
    All DSP audio processing is bypassed, including the EQ.
  • WK2Y
    WK2Y Member ✭✭
    edited April 2018
    Great to know. Thanks Tim.
    Hope your recovery is continuing smoothly.
  • W9ILY
    W9ILY Member ✭✭
    edited April 2018
    So is it better to run FT-8 in DIGIU or USB with no compression or does it make any difference?
  • David Decoons, wo2x
    David Decoons, wo2x Member, Super Elmer Moderator
    edited April 2018
    DIGI-U Dave wo2x
  • Ken - NM9P
    Ken - NM9P Member ✭✭✭
    edited April 2018
    Always use DigU. Then you can have a Mic Profile for the digi modes that doesn’t conflict with your SSB Mic Profile. And you won’t accidentally leave EQ set or PROC on. Why do anything else?
  • Tim - W4TME
    Tim - W4TME Administrator, FlexRadio Employee admin
    edited April 2018
    Always use DIGx for digital modes.  For FT-8, use DIGU
  • W9ILY
    W9ILY Member ✭✭
    edited April 2018
    Thanks for all the responses. It sure clears up things.
  • Dave - WB5NHL
    Dave - WB5NHL Member ✭✭
    edited April 2018
    Also watch your TX power setting.  FT-8 is a 50% duty cycle. The FLEX PA temperature can build up pretty quickly.  Use K9DUR SDRMonitor utility or FRStack to watch the temps.
  • Russ K5OA
    Russ K5OA Member ✭✭
    edited August 2018
    TX filter got me last night. OPEN up Wide if going over 3khz

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