your correct, the belt clip nub/button is NOT on the radio. actually i didnt receive one.Can I presume that the beltclip button is not attached to the radio? Or, is there a slot on the holder to accommodate the button?
bingo, it was $1.75 plus $6.50 for shipping. THE SELLERS ID IS CAR-PLUS, here is a link to his ebay store, eBay Store - Car-plus Car Electronics: Spy Hidden Camera, 7 more, Blackberry .Probably the same place as the OP. It was an eBay purchase.