Digital TV
Closing FCC Field Offices Could Lead to ‘RF Anarchy’
The FCC is considering a monumental change that will jeopardize its ability to control interference for the private sector.
NAB 2015: Notes From the Floor on Three-Sensor 4K Cameras
McAdams On: The Ongoing Transition
What to Expect at 2015 NAB
McAdams On: TV Stations With No Signal
Gearing Up for the 2015 NAB Show
What Tom Said: Hollywood Stays In Control (For Now)
Remembering the Early Days of L.A. Television
Amazon’s Agenda Fits Streaming Expectations From Researchers
500 MHz
What Tom Said: The Push for Drones
Locating Shows Becomes a Cross-Platform Challenge
McAdams On: Title II Overkill
Broadcast’s Future Depends On Consumer Electronics
The More Things Change
McAdams On: 2015
 
Feb 17, 2015 / 06:00 AM
Eleven FCC Scenarios for The 600 MHz Band Plan
In its recent Report and Order, the FCC revealed 11 scenarios under consideration for a 600 MHz Band Plan following the spectrum auctions.
Jan 13, 2015 / 01:00 PM
FCC Reveals 600 MHz Band Plan
Previous versions by the FCC had a guard band between the lower end of the 700 MHz band and the data in the 600 MHz band.
Nov 07, 2014 / 03:00 PM
The FCC’s DTV Interference Dilemma
By now almost everyone knows the NAB has filed a lawsuit against the FCC over its spectrum auctions TV channel repack.
Oct 13, 2014 / 01:33 AM
Turned Off TV Sets Can Jam Signals
My colleague Linley Gumm and I accidentally discovered when we turned our RF test bed on for a second day of testing of inter-band interference, all seven of our DTV receivers failed to come on. Some had much greater jamming than in our tests two days earlier.
Aug 08, 2014 / 02:43 AM
How Will IBI Affect DTV Reception After Repacking?
Last month, we discussed third-order intermodulation products seldom covered in the technical literature: 2Fa + Fb, and 2Fb + Fa. We started with spectrum plots for two unmodulated carriers at the center of Ch. 9 (189 MHz) and Ch. 11 (201 MHz).
Jun 23, 2014 / 04:37 PM
Inter-Band RFI: Should Stations Worry?
All third-order intermodulation products, (IM3 and Triple Beats), occupy three contiguous channels, so there can be interference to reception on Chs. 30, 31, 32, 33, 34, and 35.
Apr 14, 2014 / 05:55 AM
Some Hope for Interference Issues
The most amazing finding from the FCC tests of converter boxes is the number of such toxic channel pairs there are.
Mar 12, 2014 / 04:00 AM
Detecting Unique DTV Reception Problems
His trouble started suddenly one evening when he discovered interference across the high VHF band that he had never had before.
Feb 01, 2014 / 06:34 PM
Moving Into an Interference-Limited Environment in 2015
This column has used the term “D/U ratio” (desired/ undesired) in describing how the FCC might repack the UHF TV spectrum.
Jan 13, 2014 / 02:09 PM
The Effects of ACI on UHF Channel Allotments
Last month, this column introduced a scheme for allocating UHF band channels by analyzing a set of contiguous channels for a given community.
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