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Tweets like these are informative on the surface but require careful dissection and debunking because such claims can actively cause alarm and panic especially if the nation feels their "TV" signals are being blocked by a nation that is hostile to them.
For reference:
GPS operates between 1.2 and 1.5 GHz
KU band (Satellite TV) is 12 to 18 GHz
VHF Band III spectrum is 174-230 MHz
UHF Band IV and V is 470-862 MHz
Firstly, GPS Jamming which targets the above reference band will not automatically cause TV signal interference, what this tweet is describing is know as receiver overload a very real phenomenon, normally a TV receiver will receiver the very weak TV transmission and amplify it, filtering out unwanted noise and decode the digital information, if an extremely powerful signal is nearby it can overwhelm the receivers front end electronics.
This can happen even if there is conducted interference (from unshielded power cables or electrical interference along the power supply) or radiated interference - basically unwanted signals from a powerful radio transmitter.
See example below of receiver overload:
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However it is important to clarify what signals are being blocked, is it terrestrial VHF/HUF band (which could be down to interference) or satellite TV signals which operate on KU band (which normally wouldn't be affected by such interference outside of targeted EW operations blocking that band).
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Furthermore posting a map of ADSB signal interference doesn't in itself prove anything... GPS Jamming is not automatically TV signal jamming or broad spectrum jamming. Television signal reception interreference can occur due to additional emissions but it should not be treated as an element of EW on its own.
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This is why such tweets must always be taken with a truck load of salt as attributing EW attacks to any one country without ample evidence and facts just makes you look like a total ASS!
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Sorry, its just that tweets like this really annoy me... Just a rant, I am done now.
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