Whistler is offering FREE shipping on all of their scanner accessories through 02-14-2017 (expires at midnight CST on 02-14-2017). Although it is not mentioned/published on the Whistler website, the Whistler accessories are fully compatible with the equivalent GRE and Radio Shack branded scanners (see cross-reference chart below). To get your discount use the discount code SCANNERLUV at checkout. Per the fine print of this offer: "Limit one coupon per customer. Valid on standard shipping in the USA up to $10."
GRE Model.....Old RS Model.....New RS Model.....Whistler Model
PSR-100.........Pro-404..............Pro-649...............WS1010
PSR-200.........Pro-405..............Pro-650...............WS1025
PSR-500.........Pro-106..............Pro-651...............WS1040
PSR-600.........Pro-197..............Pro-652...............WS1065
PSR-800.........N/A....................Pro-668...............WS1080
Link to scanner accessories: https://whistlergroup.com/collections/scanner-accessories
GRE Model.....Old RS Model.....New RS Model.....Whistler Model
PSR-100.........Pro-404..............Pro-649...............WS1010
PSR-200.........Pro-405..............Pro-650...............WS1025
PSR-500.........Pro-106..............Pro-651...............WS1040
PSR-600.........Pro-197..............Pro-652...............WS1065
PSR-800.........N/A....................Pro-668...............WS1080
Link to scanner accessories: https://whistlergroup.com/collections/scanner-accessories