I have never understood this single mindedness within the prepper community: There will be only one EMP attack.
It never occurs to anyone that the "enemy" would launch a secondary EMP strike 72-96 hours later. About then is when most local, state and federal governments, and the military would have the basics of their C4 back on line.
Then, WHAMO! The secondary strike.
So, if you have survived the primary strike, sitting there, generator going, got your comms up and running, patting yourself on the back . . . WHAMO!
It is not like the "enemy" is going to send you a personal message via morse code.
It is what I would do.
Also, I am fully aware of what RADBAN can do, to include spoofing.