ECS-300CX-24.000 ECS-300CX-24.000MHz ECS-300CX-24.576MHz ECS-300CX-240 ECS-300-S-20A ECS-300-S-20A-30T-TR ECS-300-S-20A-F ECS-300-S-20A-F-TR ECS-300-S-20A-TR ECS-300-S-30B-TR