KTech introduces new demultiplexer
One DVB-ASI stream with multiple programs can be demultiplexed to two separate DVB-ASI streams for DTV digital must-carry....
Keeping intruders off the site
From steel doors to security systems — find out the best way to protect your transmission site and keep trespassers out....
The 1920x1080/60i HDTV format
A look at the scanning systems defined by the complementary SMPTE standard 274M and Rec. ITU-R BT.709-4, which share a common image format (CIF) with a 16:9 aspect ratio, 1920 active Y horizontal pixels and 1080 active scanning lines, independent of the picture rate....
Master control playout options
A look at the past, present and future of master control. Which strategy fits your needs?...
Londen Media Group's KAZ-TV project
The Londen Media Group wanted to transfer their broadcast signal to the Phoenix market… and pull live content from a local AM radio station....
New types of satellite paths make expanded war coverage possible
Many satellite feeds from the front lines don’t need traditional satellite service providers anymore....
MPEG-4 compression: A look at the benefits
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In order to provide guidance on this important topic, Broadcast Engineering editors have assembled three experts to discuss different aspects of MPEG-4 and related compression systems....
Evolution?
The second installment of this two-part series investigates three issues: changes to the ATSC standard, enhanced video-compression technologies, and the prospects for these new compression techniques to displace MPEG-2....
Avoiding the RF hazard
Take a tour through the history of RF hazard regulations and find out how to keep your facility up to snuff....
IP VOD services
With the big European cable players now completing their restructuring, we can expect a great deal of activity in VOD throughout 2003 and into next year....
The road to multichannel broadcasting
With so many channels and so much crossover of material, it is important that broadcasters retain a distinct and crowd-pleasing identity, while saving money....
xDSL VOD for the masses
When a subscriber demands a video, he or she expects it to be delivered with full quality; if it isn’t, the service won’t succeed....
Combining digital and analog TV signals
One way to do this is to add an additional transmitting antenna onto a tower already carrying an analog antenna system. But, unless a rigorous site analysis indicates no other option for a specific site, this method may present problems....
Eliminating that nasty ghost
Ghosting might not exist in digital systems, but reflections from the antenna are still significant because they can impact the correction process and lead to a higher bit error rate. Control the VSWR levels by adjusting and tuning for the best possible overall response. No standard has been set for VSWR, but the average value should fall well below 1.10....
DeVolution
Craig Birkmaier offers a look into the future of digital video compression. New options require more processing power, but may also provide smarter compression – allowing higher quality content to be transmitted at lower bit rates....
MPEG coding systems
MPEG unleashed an industry that has improved the quality and reduced the cost of transmission, and has become the basis of the digital terrestrial television system worldwide....
Keeping the lights on
No area is totally safe from power failures; even some of the most sophisticated transmitter sites are vulnerable. Therefore, standby power plants and power line filtering are highly recommended if not totally necessary....
TV transmitter control systems
Given that a well-maintained transmitter should show such stability, many transmitters receive scant attention during the broadcast day....
Basics of waveguide selection
This month’s Transmission and Distribution article discusses the importance of evaluating the transmission line system, and considering the more efficient, but costly, solution of waveguide over coaxial lines....
Transmission & Distribution: Two or more aren't a crowd
Traditionally, each television station in the United States had its own antenna and transmission line. To a significant degree, each station also had...
Applied Technology: Preserving a facility's routing investment
The UCI-2000 from PESA allows routing systems from PESA and third-party vendors to be integrated in a single system, giving broadcasters another option for expansion of their routing systems....
Applied Technology: Thales Affinity low-power DTV transmitter
Low-power solutions are a great way for broadcasters to get their DTV signal on the air cost-effectively and reliably....
DVB Update: Television over IP: Where does it fit in?
Simply because we can put the terms DVB, IP and television together in a sentence implies that we can say that the technology to deliver DVB content in packets over IP already exists....
Applied Technology: Northrop Grumman's IOT with CEA technology
Many stations were waiting until the last minute to conclude transmitter deals, hoping that the FCC would delay the digital rollout....
Transmission & Distribution: Just what is my signal strength?
How do you determine the signal strength either at a particular point or over the total service area. Making that determination is difficult at best, whether one uses calculation schemes or measurements....
