[Scan-DC] N6643N Mar-Tech Engineering

[Jeff Krauss]

Mat-Tech has been doing cable signal leakage 
flyover measurements for many years.
See for example 
http://www.controlcam.com/wp-content/uploads/FCC-Filing-1-23-13.pdf


At 02:11 PM 1/14/2016, Alan Henney wrote:
>This Cessna was flying over Takoma Park around 2 
>a.m. today. Checking FlightAware, it appears to 
>have covered almost all of Prince George’s 
>County. 
>https://www.dropbox.com/s/ga3nbth7vxbqpl9/N6643N2.png?dl=0 
>I was surprised to find it on FlightAware but 
>not on my ADSBScope. Any thoughts? Alan 
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