and every component thereafter fig7 is a block diagram of a first embodiment of an sdars receiver of the present invention in the preferred embodiment the full 12 5 mhz xm band containing the first and second ensembles are received in the receiver 200 via the antenna 110 a low noise amplifier 122 and an image filter 124 as per fig5 the output of the image filter 124 is input to a first mixer 208 the first mixer 208 is driven by a vco 221 which in the illustrative embodiment operates at a frequency of approximately 1600 mhz the actual output frequency of the vco 221 will be substantially equivalent to two thirds of the center frequency of the full 12 5 mhz frequency band received at the antenna 110 if for example the center of the xm 12 5 mhz frequency band is 2338 750 mhz the vco should operate at two thirds of 2338 750 mhz or 1559 167 mhz the vco is driven by a synthesizer 219 the mixer will have an approximate 800 mhz output which in the illustrative embodiment is filtered by a 12 5 mhz wide saw filter 212 note that the use of a single saw filter in place of the two saw filters 212 u2032 and 214 u2032 of fig6 is one advantage of the implementation of fig7 the saw filter 212 serves to select the entire xm band 40 see fig3 a including both ensemble a and ensemble b the output of the saw filter 212 is input to an automatic gain controllable.