Noise Burst?

I see these bursts of noise from time to time on 40 meters. I have expanded the spectrum display and it is fairly broad band but it varies in amplitude across the spectrum. It doesn’t look like typical noise and sometimes I wonder if it is a sampling Phenomenon in the SDR as a reaction to a noise input. Has anyone else seen this. Today when I saw it I logged into my buddies system, a Flex 6700 in North Carolina to see if it was wide spread. Didn’t see it at all on his Flex. I have uploaded a short video from my phone camera.

Does anyone have an idea what this might be?

1 Comment so far

  1. N4RFC on November 15th, 2017

    This was caused by turning on the “Weighted Average” on the Display. Apparently that function is geared toward very weak signals and where there are strong signals in the passband of the ADC it will cause the display to wank up. Turning off Weighted Averaging cures the problem.

This blog is kept spam free by WP-SpamFree.