Jason,
Nice work at capturing that video. Your span is .5mhz wide and the source looks like a FM signal that is being modulated constantly, no spars or change of bandwidth. Obviously it is moving around freakishly. Then again a BTR TX doesn't have the 'fork' look. Trying to spark some synapses... some of the shapes this device makes are reminiscent of an 825 being keyed on.
Or is that the trace left by the persistence leaving a 'flat top' trail' because it's moving so fast? I can't locate an image right now of an 825 pack keyed on not but modulating or static. By chance is there a TR-825 assigned to 534mhz?
I'm glad you appreciated the Hedy Lamarr reference. There were two more rehearsals today with the show/web stream early afternoon. I also brought in the 1302 to have a peek. Both the BB60C and 1302 showed this noise. I inserted a SAW filter in line which has the gak in its bandpass and it didn't go away. So this isn't some sort of false image. I did find it though.
The signal IS roughly 20mhz of Tempest 900 noise!! The Tempest on the show was spewing nonsense 400mhz--ish lower than what it broadcasts. Hedy has been found. Peak to peak in the 902-928mhz range the tempest is 24mhz wide. The other 4mhz are probably being masked by TV station 21 or is under the noise floor.
If you have been seeing something similar to this and the range of the gak has been higher maybe there was a FHSS on the show in the 1.9 or 2.4ghz range releasing hash lower in the spectrum. Keep us posted on what you find.