this video starting around 10:30 ... Dustin calls it an "analyzing loop" around 11:30 ... caused by interference
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I might be picking nits here, but I don't really like "analyzing loop," to describe what we're seeing. Judd used the same language - "analyzing loop" - on the phone when I called after the first instance of interference on the first day with my Athlon, but I'm not terribly certain I'd agree with that particular language - I don't necessarily perceive that it's just "analyzing" and then picking a high velocity, but rather the units are in a re-triggering loop because of radar feedback from the interfering units.
In that Paramount video above, we can't really tell which unit is interfering with that visible Athlon, since we can only see 2 of the 5, but I would bet it was the LabRadar. The LabRadar would appear to be fine, since it wasn't yet triggered between shots, but it's quite likely that it was displaying false velocities when triggered. The Athlon is radar triggered, so it's being repeatedly triggered by the interference. The Garmin could exhibit the same issue - potentially - since it is also radar triggered, so the fact the Garmin screen isn't constantly recycling in the same way as the Athlon, I'm betting the co-channel interference was with the LabRadar and being hidden by the fact the LabRadar uses an acoustic trigger rather than Radar.
The high velocities being displayed are almost assuredly false-echo registrations. The signal from another unit comes back and the timing offset is just wrong, so then the unit displays an incorrect velocity. Alternatively, when the Athlons are showing the chronic "analyzing" on the screen, I believe that is multiple trigger events, rather than just persistent processing. You'll see the screen flash back and forth, indicating the analysis is ending, skipping some false echoes, registering others. As I mentioned, any radar triggered unit could exhibit that issue, it's just odd that we're seeing it so much more commonly from the Athlons than the Garmins, which makes me think the Athlon may be more susceptible to NEAR-channel interference rather than strict co-channel (this COULD also describe a potential difference for inequitable interference from Athlon to another unit brand, but that's pure speculation on my part at this time).
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from DPG 
