The Motorola VISAR Series have been discontinued, and if you're stuck with VISAR accessories that you want to use with other Motorola radios then you can consider this Plug Adapter for the Motorola GP328PLUS and other radios in the Motorola line-up that can accept such adapter. Made by eAiming, you can get for US$24.95 at Tiger111HK. At least your investment in VISAR accessories won't be for naught with this adapter.

"Convert single Sound only

Fit for Motorola GP328 Plus, GP338 Plus, GP344, GP388, GL2000, EX500, EX600, EX600XLS"