is attractive in terms of cost reduction since it allows re use of base stations for different transmission modes however wideband radio also introduces the problem of how to deal with high level interfering signals presently such signals saturate parts of the receive circuit u2014 typically the adc by detecting interference and determining its frequency it is possible to tune a bandpass or bandpass with notch filter to take the interfering signal out of the reception band of the receiver thereby taking the adc out of saturation whilst retaining the ability to resolve low level signals application_number US 21166102 A description as noted above wideband radio or software defined radio is a desirable goal since it allows re use of a single receiver for multiple modes i e to allow a reception of signals such as cellular mobile radio signals transmitted according to different standards the general principle is to have a receiver capable of receiving over a relatively wide range typically of the order of several tens of mhz the received signal is then sampled using an analogue to digital converter and processed to isolate the separate channels separate narrow portions of the received frequency spectrum and to process those channels to extract transmitted data according to the appropriate transmission mode thus the base station may be used to receive different modes simply by altering the processing algorithm which is performed on the data once it is sampled however in order to meet the present standards it is necessary to be able to cope with high level interference whilst retaining sufficient resolution and noise floor to receive relatively low.