AST3TQ53-T-19.200MHZ-5-C-T2 AST3TQ53-T-19.200MHZ-5-C-T5 AST3TQ53-T-19.200MHz-5-SW AST3TQ53-T-19.200MHz-5-SW-T2 AST3TQ53-T-19.200MHz-5-SW-T5 AST3TQ53-T-19.440MHz-1-C AST3TQ53-T-19.440MHZ-1-C-T2 AST3TQ53-T-19.440MHZ-1-C-T5 AST3TQ53-T-19.440MHZ-1-SW AST3TQ53-T-19.440MHz-1-SW-T2