The use of color burst Xtals went away with the use of colm filters.
But more to your point, I'm sure there are specific frequency OSC specific to the decoding of Digital TV transmissions, depending on the processor used.
Snowden? The issue I agree is that when GB started us down the road to paranoiaville, we pretty much gave up our rights to any semblance of privacy.
Ron
Is it still paranoia if they are really out to get you.
All I was saying is that monitoring citizens is old technology and has been going on for a very long time. And the newer and better the technology the better they get at it. I've always assumed they are way better at it than most people think or suspect.
I'm not particularly paranoid, just practical, I've always avoided radiating anything of substance and stick to the boring and mundane.
I did plant easter eggs for the nerds who spy for a living. Something so outrageous and funny they just had to share. And bigger than dew dew, it eventually made it's way back to me.
I was more into the nuts and bolts of the operation, physical security, but hung around the electronic security guys daily.
You really wouldn't need any fancy electronics to monitor TV, a simple filter array and some idea of the frequencies involved. You could pick out the missing bleed fairly easily. My knowledge of radios and such is archaic, but other than better technology, the theory remains the same.
The vans, I've seen them, you can too if you actually look. Short antenna front and rear for some frequencies. A small array for other frequencies. Most people would never notice, unless you are into radios and using illegal linear amplifiers.
Those guys didn't install very large metal boxes around there equipment for fun. Instead of shielding the stuff individually. They also had rules about any wire that went through an outside wall. Maybe their paranoia rubbed off on me.