DIGITAL TV

Apr 11, 2012 / 12:26PM
Interference Between 700 MHz Cellphone Signals and DTV Signals
If my antenna is on my rooftop, everything is probably OK, but if my antenna is indoors, it may pick up enough signal power from a nearby cellphone to block DTV reception.

Feb 14, 2012 / 10:57AM
Updating the Future of GPS
Additional testing set for January was to involve prototypes of GPS receivers and active GPA antennas for commercial aircraft

Dec 21, 2011 / 12:00AM
Testing Interference Rejection of DTV Converter Boxes
We found that the maximum undesired signal at which these units could perform was between –22.2 dBm for the best box, to –28.7 dBm for the worst.

Solving DTV-Wireless Broadband Interference Problems
In addition to DTV sideband splatter into adjacent spectrum, there is another source of noise jamming built into receiving devices that have poor RF selectivity.

Cell Phone, DTV Interference Issues Examined
So what should the FCC do about Channel 30?

Update: Testing Interference to GPS by LightSquared Signals
The FCC has a spectrum utilization committee, which is now studying all the test data. When they will finish these studies is not yet known.

Why LightSquared’s Proposal to Operate at Reduced Power Won’t Work

I expect the FCC to soon grant permission for LightSquared to proceed with its build-out.

Can Terrestrial Broadcasting and GPS Co-exist in Adjoining Spectrum?

My simulations indicate the spectrum which may be generated in GPS receivers by LightSquared signals.

Making DTV Reception Reliable

The simplest scheme is to employ a much higher gain antenna.

DTV Reception 24 7
The first time I received an e-mail about DTV reception only during daylight hours, I was dubious.