Editing Nuclear electromagnetic pulse (section)

===Vacuum tube vs. solid-state electronics===
Older, [[vacuum tube]] (valve)-based equipment is generally much less vulnerable to nuclear EMP than [[solid-state electronics|solid-state]] equipment, which is much more susceptible to damage by large, brief voltage and current surges. [[Soviet]] [[Cold War]]-era military aircraft often had [[avionics]] based on vacuum tubes because solid-state capabilities were limited and vacuum-tube gear was believed to be more likely to survive.<ref name="science"/>

Other components in vacuum tube circuitry can be damaged by EMP. Vacuum tube equipment was damaged in the 1962 testing.<ref name="euroem"/> The solid-state [[PRC-77]] [[VHF]] manpackable two-way radio survived extensive EMP testing.<ref name="PRC77">Seregelyi, J.S, et al. [http://www.dtic.mil/cgi-bin/GetTRDoc?AD=ADA266412&Location=U2&doc=GetTRDoc.pdf Report ADA266412 "EMP Hardening Investigation of the PRC-77 Radio Set] {{Webarchive|url=https://web.archive.org/web/20111112122352/http://www.dtic.mil/cgi-bin/GetTRDoc?AD=ADA266412&Location=U2&doc=GetTRDoc.pdf |date=2011-11-12}}" Retrieved 2009-25-11</ref> The earlier PRC-25, nearly identical except for a vacuum tube final amplification stage, was tested in EMP simulators, but was not certified to remain fully functional.{{citation needed|date=August 2016}}