 receive a TV programme because it has been desensitised by a locally proximate mobile broadband device. One answer is to improve the dynamic range and selectivity of TV receivers but there are a lot of them already out there. Also, the problem is rather subtler than just dynamic range. A DVB or ATSC UHF tuner will generally be designed to tune across the band. It has to do this because digital broadcast channels could be anywhere in the band depending on the country in which the device is being used or the part of the country in which it was being used. The alternative is to produce country- or region-specific variants that can just work on the locally available channels. The disadvantage of producing country-specific or regionally specific variants is that it is difficult/ impossible to achieve economies of scale because addressable markets are too small. The disadvantage of tuning across the band is that it is hard/ impossible to deliver good sensitivity from the device and the device is vulnerable to interference from other inband transmissions, for example from other mobile cellular handsets. The difference is significant. For example, a digital broadcast tuner working across the whole UHF band would typically have a sensitivity of between -92 and -98 dBm. A UMTS handset working across a much narrower band, for example 25 MHz rather than 400 MHz could have a sensitivity of better than - 120 dBm. Admittedly this is not a like-for-like comparison as the UMTS handset is working in a 5-MHz channel and the digital broadcast channel is 6, 7 or 8 MHz, but the difference is in any case substantial. And the difference is important. One of the lessons learnt from the BT Movio experience in the UK and Modeo experience in New York, two examples of mobile TV trials that failed is that users with an integrated cellular/mobile TV and radio receiver expect to listen to digital radio and for that matter to listen and watch digital TV wherever and whenever they have cellular coverage. The present sensitivities and selectivity