Now I've added a english translation for Calculadora de TSI now named TSI Calculator.
You can find it in the left menu of this site. It appears as TSI Calculator.
The translation is mine, I hope you can understand my english hehe, because is not very good.
If you have any question or requirement, feel free to make me know your idea or problem, or replying this New!.
Marco Antonio Camarena Cortés