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Losing first CW character when beginning xmit

skysky Member ✭✭
edited October 2018 in FLEX-6000 Signature Series
I am losing the first character of my CW transmission. SmartSDR (v 2.4.9) is in CW mode, I am using an electronic keyer plugged into the 6600 KEY rear input, transmit delay in SmartSDR radio setup (transmit tab) has delays all set to ZERO.

I had understood that in CW mode, the SmartSDR ignores the TX delay setting and heads direct to RF instantly but my first character gets lost in the slight delay when I first sent my first character (The first letter 'C' gets lost when keying my CQ).

Any suggestions?  Thanks.


  • Mark WS7MMark WS7M Member ✭✭
    edited October 2018

    Do you use an amp?  A TX delay may be needed with an amp.
  • skysky Member ✭✭
    edited October 2018
    Understood but I am not using an amp. I want NO delay.
  • Duane_AC5AADuane_AC5AA Member ✭✭
    edited October 2018
    Even with an amp, it should not truncate the front edge of a CW character or string.  If it does, then it is no longer a QSK radio!  
  • K1UO - LarryK1UO - Larry Member ✭✭
    edited October 2018
    Does it do that with the internal keyer of the 6600?    Is the internal keyer disabled when using the external keyer.
  • Tim K9WXTim K9WX Member ✭✭
    edited October 2018
    This sounds similar to a problem I reported here several months ago.  See https://community.flexradio.com/flexradio/topics/missing-first-element-in-sidetone

    In my case, the first element was missing but only in the sidetone, not the transmitted signal.  Several others responded to my post indicating that they have noticed the same behavior.  I had hoped this would be fixed in 2.4.9 but I still think it is an issue.

    Tim K9WX

  • skysky Member ✭✭
    edited October 2018
    Tim: Tnx fer the reply. I can easily hear that my first CW character is not being transmitted and see the same on the waterfall (monitor). My electronic keyer is provided the side tone accurately.
    I have the Breakin button illuminated.

    Interestingly, the problem was present up to yesterday but not today. I just made a CW contact and there was no loss of the first character. Everything operated instantaneously as it should. No changes or adjustments were made. I may have a moody SmartSDR program installed.
  • skysky Member ✭✭
    edited October 2018
    The transmitter delay has returned again! 

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