From the very beginnings of radio, engineers have been heavily focused on RF power output. While RF power level is certainly important in any transmission system, it is one of many factors that enter into the success formula. Download the White Paper here – RF Power vs System Gain.pdf
The use of Low Noise Amplifiers (LNAs) in antenna feeds was first introduced to compensate for excessive transmission line losses in ENG Central Receive systems. When all ENG operation was analog, the antenna system design and LNA implementation was very forgiving. Any compression or limiting in the analog LNA caused by strong receive signal levels had very little affect on the overall performance of the system. Download the White paper here – LNA Linearity and Gain Control.pdf
MRC introduced the nations first COFDM news gathering systems, and was first to recognize the issues associated with signal acquisition and the cliff effect. A new ENG confidence monitor was developed to analyze key receiver parameters, including pre and post Viterbi error correction, recovered signal to noise ratio, and received carrier level. Download the White Paper here – Digital ENG Signal Quality.pdf
The discussion of COFDM versus VSB is not new to TV broadcasters in the US or in Europe. The choice of 8VSB as the digital standard in the United States was a hotly debated topic at the start of the DTV build-out, particularly after the Europeans demonstrated COFDM. The debate was centered on the fact that DVB-Ts COFDM transmission system performs substantially better in mobile applications, which some broadcast groups saw as a potential new revenue opportunity. Download the White Paper here – COFDM versus QAM andVSB.pdf
Soon after the first ENG systems were put in service, carrier offsets became one of several new concepts developed to help fight adjacent channel interference in heavily congested areas. Download the White Paper here – COFDM Offsets and Adjacent Channels.pdf
“With recent advances in technology and the resultant improved understanding of the issues that affect their performance, FM synchronous boosters and single frequency networks (SFN) can now be a much more effective way to solve problems that have long plagued broadcasters due to the characteristics of FM propagation.”
Please download the full White Paper from Tim Bealor, Vice President of RF Systems, Broadcast Electronics Inc here – SFNbooster whitepaper
“Advances in DSP driven Digital FM Exciters have provided new opportunities for the implementation of synchronous FM broadcasting using multiple transmitters operating on a single frequency.”
Please download the complete White Paper from Charles W Kelly – Broadcast Electronics Inc – Synchronous FM – A New Approach
“However, attention is now being turned to the possibilities of fixed receive networks in city centres
or major venues enabling camera crews and producers to operate live without the need for a link/SNG
vehicle and attendant engineering staff. Indeed in some locations, parking restrictions and the proximity
of tall buildings have rendered them impossible to cover even with a satellite truck.”
Please download the full White Paper from Link Research here – Cellular_Diversity_White_Paper
“As broadcasters move towards High Definition productions, the first applications for High Definition TV include the worlds most prestigious, high profile, international sports events which are transmitted live. Wireless camera systems are now commonplace at live sports events so the shift to HD means there is a clear need for a digital wireless camera system for HD TV.”
Please read the complete White Paper from Link Research here – White_Paper_-_Achieving_Performace_for_High_Definition_Video_over_Wireless_Links
As DWCS systems become widely adopted, concerns have been expressed about the effects of exposure to the RF fields radiated by the transmitter. Stephen Harding at Link Research examines this important issue in this White Paper – White_Paper_-_Health_and_Safety_issues_relating_to_DWCS