I loaded 1.5 and everything works except the wide noise blanker. I see no diferance on or off. Am I missing somthing

  • 2
  • Problem
  • Updated 3 years ago
Loaded 1.5 and the wide noise blanker does not seem to work. I see the icon WNB flashing off and on but do not hear any deference in the audio or scope.  
Photo of Dennis Daniel KM6DF

Dennis Daniel KM6DF

  • 85 Posts
  • 6 Reply Likes

Posted 3 years ago

  • 2
Photo of KY6LA - Howard

KY6LA - Howard, Elmer

  • 3541 Posts
  • 1396 Reply Likes
Official Response
@Walt

There is a lot of confusion as to when to use WNB and Whento use NR.

A lot of the complaints that WNB does nothing is likely due to a total misunderstanding of what each of WNB and NR does.

Correlated Noise is noise that follows a repetitive pattern such as ignition noise, electrical fences, fluorescent ballasts. WNB listens to a broad area of spectrum to see if it can identify a pattern. If it does find a pattern, then simplistically it inverts the pattern and injects that pattern 180 degrees out of phase with the original corolated noise source to cancel the noise If you look at some of the videos you will see that WNB is removing an astounding 25-30dB of correlated Noise. This is clearly a Best in Class achievement as I am unaware of any other Ham grade products that come close to this.

Uncorrolated noise is random noise that does not follow a particular pattern. If you have uncorrolated noise then you should be using NR to minimize the noise. Most of us have uncorrolated noise and should be using a combination of AGC-T and NR to mitigate noise.

ANF - automatic notch filter is a specific filter to notch out a single noise source.

TNF. Another Flex exclusive is multiple tunable notch filters that can be placed on interfering signals ...almost impossible to do with legacy technology.