Abstract
Abstract. This Paper presents the results of spectral observations in the UHF TV Bands IV and V from 470 MHz up to 862 MHz with focus on the TV-Channels 61 to 63 and 67 to 69. Concerning the discussions on \\citet{WRC} this frequency range is in great demand of several applications and is usually treated as a "white space" in the TV-Bands. According to typical scenarios, two different spectral loads will be presented considering the requirements of professional wireless microphone receivers with respect to in-band intermodulation.
Highlights
In the course of the digitalisation of the UHF TV-Bands a reallocation of the UHF frequency spectrum will take place
This is based on the presumption that Digital Video Broadcasting (DVB-T) will occupy less spectrum than the analogue counterpiece
According to BNetzA (2005) Professional Wireless Microphone Systems (PWMS) are allowed to operate on these channels without individual permission until 2015, named channel 61 to 63 (f =790 MHz to f =814 MHz) and channel 67 to 69 (f =838 MHz to f =862 MHz) which were former used by military applications
Summary
PWMS is a common application in the cultural industry and includes wireless microphones for professional usage, InEar Monitoring Systems (IEM), Electronic News Gathering (ENG) and wireless audio systems. These applications can be found in studios, theatres, musicals, politics, sports, broadcasting and on stage. PWMS is a core application in the production of multimedia content and is used for recording and archiving unique events. This leads to very high demands on the reliability and sound quality of PWMS. In contrast to daily usage, today’s mass events, for example in sports, generate a temporary much higher demand on a useful frequency resource
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