Digital TV
IBC Reflections
The pace of industry consolidation as well as our industry’s move towards IP were never more evident than at last month’s IBC Show in Amsterdam.
Forward Thinker
C-SPAN Pay Wall Spotlights Multiplatform Challenge
It’s All Just ‘Television,’ Or Is It?
What Tom Said: Hatching the UHD Egg
Ready for YouTube’s Networks
CableCARD: Acknowledge the Inevitable
McAdams On: Ferguson Unraveling
A Look Back at Broadcast Engineering Magazine
McAdams On: Comcast’s Growing Pains
Rounds’ Social TV Relies on Online Streams
True Dedication
Transitioning Broadcast Automation
Recording Pretty Pictures From Above
McAdams On: LPTVs
McAdams On: Aereo’s Hail Mary
 
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.
Nov 18, 2013 / 06:00 PM
Minimizing DTV Interference After Channel Repacking
Last month we discussed the restrictions that the FCC must work under in repacking UHF broadcast spectrum.
Oct 09, 2013 / 06:13 AM
Repacking Likely to Multiply Interference
The FCC recently released details of how it will repack remaining TV spectrum in the UHF band.
Jun 12, 2013 / 09:36 AM
What You Need to Know About Adjacent Channel Interference
Adjacent Channel Interference between DTV signals may become critical after the FCC repacks the remaining UHF TV spectrum.
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