Before people start saying "see this is why cod sucks its so unrealistic" you have to remember this ENTIRE gallery has examples why all other games have problems too

@Viuff The Flayed One, was the question aimed at you specifically?
to answer Land’s question. radios are technically electronics because they need diodes to work, but radios are not that complex of an electronic. the only thing you need to receive radio signals, is some kind listening device(headphones, speakers),an antenna (any long piece of metal), and a diode, you don't even need a power source if the signal you are listening to is strong enough. EMP resistant diodes aren't that uncommon, but replacement diodes can just be improvised.

Most Military radios and transmitters are EMP resistant anyway.