Radiation as in Energetic Particles or as Waves like EM? That pulse wouldn't happen to be ELECTROMAGNETIC would it? Your confusing netrons and gamma particles that go through most everything to Electromagnetic waves that don't. Faraday shield will stop or suffifiently attenuate EM waves. That makes stuff resistant. Wrong in part. Tubes are more resistant as anything that nominally operates with hundreds of volts is less likely to be terminally affected by a 20V spike. However a piece of logic that runs on 5V will be totaled with even a 1V spike. Yes they are. At least the electronics will be. A C150 flying behind a real honest to dog Slick magneto won't even notice it. However Sats die not only from the EM fields from solar storms they also suffer from the ionizing radiation that literally posions the silicon and it's doping. Really wrong! While that is the primary damage path it is far from the only path. Near hits are a danger due to the EM field resulting. I have a computer that was damaged by EMP from a direct hit to the house I was in at the time. It was not connected to power or terminal. The damaged chips were near the physical edges close to openings as the case (NS* horizon with wood cover) was not 100% enclosure. The terminal (an H19) was totaled. It too was no cables connected and line cord laying on the ground. Another machine in the house that was connected was totaled. A portable battery operated common 6 transistor AM radio was cooked, mixer/osc transistor connected to internal loopstick antenna was shorted(that's a magnetic loop!). Remember in an intense EM field any wire is the load side of a transformer (or field of a generator) and the connected circuits have to dissipate the power induced in that winding. Even then inverse square law says no, not that far. Check the various studies done with the Nevada desert blasts and out in the Pacific. Military field radios are EMP resistant. Ever look at field radios? They have everything going in or out through connectors, when connectors are unplugged there are conductive caps placed over the connector and the cases are all continous conductive including closeable covers on things like speakers. This is partially to protect against handeling and environment but also EMP. If "you" a user are far enough away to survive without ill effects likely those radios will. The key is anything too close is at risk. Distance is safety. For known cases, Hiroshima, Nagasaki, Pacific Islands that safe distance only a few miles from ground zero. This does not include radioactive fallout and it's longer term poisoning. Further in the desert where thy did underground blasts for years at the top of the hole were older computers with CORE memory that were subjected to both EMP and physical shock waves. Usually the system was trashed due to the trailier being tossed around but, the cores would be pulled and read if the machines were too mechanically damaged. Fact, bombs are bad. Being close to them is very bad. Allison