[timewizard]

I'm not at all sure why you'd think that. Here's an actual product that sits inline with the coaxial cable and is absolutely intended to protect the receiver.

https://www.dxengineering.com/parts/ntk-pti-bb50nff?seid=dxe...

[resters]

Serious HEMP protectors are tested to MIL-STD-188-125 or IEC 61000-2-10