Since 1992, AST has been providing the telecom industry with a highly reliable product at a competitive price with unmatched delivery times. In April 2017, Diosat Satellite acquired AST. Diosat was an exisiting AST customer and already had a line of waveguide products which complement our line of switches, so now we are in the process of merging our product lines and becoming known as AST Microwave. All AST switches are air tight (including drive head) and tested to 20 psi, so there is no chance of leaking. As a reflection of our unwavering commitment to the top quality product, AST has extended the warranty on all products to 3 years.