Astatic Microphone Switch The Astatic Microphone Switch (model SWITCH AST) is a direct replacement switch designed specifically for Astatic 636 microphones. It restores reliable push-to-talk functionality, making it an essential component for maintaining clear and consistent communication. Built for durability and easy installation, this switch helps extend the life and performance of your microphone. Replacement Switch for 636 Microphones SWITCH AST Still looking for the perfect part? Having trouble finding it? Call our product experts at 603-224-7370 and let us lend a hand. EXTRAS Extras The following products are meant to be used or paired with the product above. BlueParrott B450-XT Noise Cancelling Head Set Stryker SR-477HPC2 10 Meter Radio 55W 10,000W Stryker SR-A10 Antenna Still looking for the perfect part? Having trouble finding it? Call our product experts at 603-224-7370 and let us lend a hand.