The Whistler TRX-1/2 are the same radios as the WS1088/98 with, according to Whistler, 'improvements in the front end for improved FM radio suppression and extra firmware space for future improvements' (upgradeable firmware for newer protocols like NXDN). Comparing police scanners? You’re in the right spot. Click on link below to watch scanner comparison videos: › Whistler TRX-1 vs Uniden BCD436HP › Whistler WS1095 vs Uniden BCD996P2 › Whistler TRX-2 vs Uniden BCD536HP (coming soon).