Unwanted Sideband Rejection Bug?

  • 2
  • Problem
  • Updated 5 years ago
  • Solved
Periodically, I observe my transmitted signal shows very little opposite sideband rejection and multiple audio products. At least from what I can see on the panadapter.

By shutting down and removing power from the 6500 for a few minutes, the problem is cured for a while. It does come back, although I haven't been able to identify how and when exactly.

I have seen "duplicate" signals on JT65 lately, and wonder if they're caused by a) other 6000-series users with the same issue, or b) a similar problem on receive, too. Or, it could be coincidence...

SSDR 0.12.17, Flex 6500, Windows 8, 64-bit.
Photo of George Molnar, KF2T

George Molnar, KF2T, Elmer

  • 1590 Posts
  • 555 Reply Likes

Posted 5 years ago

  • 2
Photo of Gerald - K5SDR

Gerald - K5SDR, Employee

  • 814 Posts
  • 1465 Reply Likes
Official Response
This turned out to be a timing problem in the reset logic in the FPGA code. It has been fixed but it did not make it into the most recent 0.13.10. It will be in the release that follows. I have found that you can usually fix the problem by rebooting the radio.