 available from digital TV and radio tuners are not sufficient to meet that experience expectation. One option is to increase broadcast transmission power levels. To an extent this is happening as digital switchover proceeds. In the UK for example digital TV signals were increased by 7 dB as analogue signals were turned off in a particular area. The second option is to retransmit digital TV and digital radio signals from cellular transmitters. The objective with options 1 and 2 is to ensure that received signal strengths as seen by portable and mobile devices, in other words the flux density, are similar Making Telecoms Work irrespective of whether the received signals are cellular or digital broadcast, a solution that has come to be termed as a cooperative network. An advantage of this is that portable tele- visions would also work and/or lap tops with DVB T or ATSC demodulators could provide users with cost- and energy-efficient linear TV programming. The link budget and bandwidth needed for HD, and in the longer term super HD, are particularly challenging for terrestrial broadcasting. The broadcasting industry and cellular industry have been mast sharing and site sharing for over 30 years. The broadcasting and two-way radio industry have been mast sharing and site sharing for over 50 years. More recently, there has been a trend for cellular network operators to share mast space, Vodafone and Orange in the UK being a recent example. There is therefore an extensive body of knowledge and experience that can be applied to ensure that cellular, two-way radio and broadcast transmissions can coexist. From a business perspective this is also good news for manufacturers of RF conditioning products. Mast sharing and site sharing has historically been based on the two-way radio and cellular industry being given, leased or sold space on broadcast transmitter masts. Increasingly we may now see the broadcast industry being given, leased or sold space on cellular macro- or microsites for local digital TV and local digital ra