In RTTY mode, changing DSP tones causes loss of RF output

  • 1
  • Problem
  • Updated 2 years ago
  • Solved

My 6300 is just back from the Radio Hospital for a problem in the TX (no output) which is now fixed. Q5 and Q6 were blown, repaired under warranty. There is one minor issue which might have been there before or not, can't be sure. Running SSDR 1.7.30.

In RTTY mode the default MARK frequency shown on the DSP button on the "flag" is 2125. No problem, works great. The problem is when I change it to something else such as 1275, which I prefer. With that setting there is no RF out. Even the TUNE button gives no power. I get the feeling that even though the number has changed, the DSP bandpass is still set at 2125 and that's why no drive is getting through. I could be wrong on that, it's just a guess.

All suggestions welcome.

73, Bill W6WRT

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Bill Turner

  • 72 Posts
  • 6 Reply Likes

Posted 2 years ago

  • 1
Photo of Bill Turner

Bill Turner

  • 72 Posts
  • 6 Reply Likes
Official Response

PROBLEM SOLVED!  Got it working, thanks to Bill, W2PKY.  The problem was a misunderstanding on my part by what was meant by "High Cut" and "Low Cut". I thought Bill was referring to the "widget" at the bottom of the slice, which does indeed adjust high and low bandpass by clicking and dragging the arrows back and forth. What he really meant was the boxes on the PHNE panel on the right of the screen. Once I figured that out, the solution was easy. Thanks for your patience, Bill!!

73, Bill W6WRT