How to customize a signal jammer?

I want this jammer to have the signal band I want on it, but I can't find the combination of signal bands I want from the store, can you help me with it?

Topsignaljammer  2022.3

Hello, welcome to topsignaljammer, yes we can complete customized signal jammer, we only need you to provide us the signal frequency band you want to customize, we can complete customized services for the product.