Quivering SSDR power level

Pat N6PAT

Pat N6PAT

Dan-N7HQ

Pat N6PAT

Pat N6PAT

One other thing to consider: I and others have reported issues with power loss while attempting to transmit. I'll be making QSO's when all of a sudden the power output drops to zero. I'm now wondering if that power issue is somehow related to my current issue

If you check this forum you'll see several posts about this problem.

Pat N6PAT

Pat N6PAT

I did some additional checking and I have found the problem with the amp and it is NOT what I had thought and stated before.

The actual problem is that in the TX band matrix the TX1 check box for 160 somehow became unchecked. I rarely change any of those values as I have no reason to but this caused the amp to not key on 160. How this box became unchecked is unclear but I know I did not uncheck it. It was working when I shut the radio down last night and was not working when I powered it up this morning. I have no idea what would have caused that TX1 box  to become unchecked.  Only that particular box because unchecked. All the others remained checked.

So I wanted to state that I can now get power from the amp again but this still does not address the quivering of the power slider.

I was wrong about the the amp failing on 160 and when I'm wrong I admit it.

Doug Hall

Pat,
I experience the phantom "TX1 unchecked" from time to time with my 6300. While I have no proof of this I believe that it is due to some setting in DDUtil. I am running SSDR 2.6.0 and DDUtil v4. I don't recall seeing this with v3.
73,
Doug K4DSP

Pat N6PAT

You may be right. I don't have any reason to change those settings from the initial setup so it did not occur to me that that could be the cause.

I don't normally run DDUtil but I did to see if I could determine what was causing the power fluctuations. That , in turn, may have switched off the TX1 box. Thanks for the info. I'll keep an eye on it.

Now I still have to be concerned about the power level

Doug Hall

I've seen the quivering power level before too, but it was only when running FT8, and even then it happened very infrequently, so this was likely a different issue from what you are experiencing. I only saw the problem with my notebook computer. In that case I determined that the audio level into DAX itself appeared to vary which, in turn, made the output power vary. Didn't happen on any non-digital modes. I have never seen this on my hamshack computer.
73,
Doug

Pat N6PAT

I was also running FT8 when this happened. I've been using FT8 on this radio for about 2 years on all the bands from 160 to 10 and normally there are no problems with the power level. All the problems began when the XO failed and it went in for repair.