Losing first CW character when beginning xmit

  • 1
  • Question
  • Updated 2 weeks ago
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.

Photo of sky

sky

  • 35 Posts
  • 5 Reply Likes

Posted 2 weeks ago

  • 1
Photo of Mark WS7M

Mark WS7M

  • 402 Posts
  • 113 Reply Likes
Sky,

Do you use an amp?  A TX delay may be needed with an amp.
Photo of sky

sky

  • 35 Posts
  • 5 Reply Likes
Understood but I am not using an amp. I want NO delay.
(Edited)
Photo of Duane, AC5AA

Duane, AC5AA

  • 396 Posts
  • 85 Reply Likes
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!  
Photo of K1UO - Larry

K1UO - Larry

  • 788 Posts
  • 126 Reply Likes
Does it do that with the internal keyer of the 6600?    Is the internal keyer disabled when using the external keyer.
Photo of Tim K9WX

Tim K9WX

  • 35 Posts
  • 5 Reply Likes
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

Photo of sky

sky

  • 35 Posts
  • 5 Reply Likes
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.
Photo of sky

sky

  • 35 Posts
  • 5 Reply Likes
The transmitter delay has returned again!