HARM missiles don't seem to be active and a special HARM derivative might be suitable. Something that may not have been made public.

https://en.wikipedia.org/wiki/AGM-88_HARM

Normal HARMs have hit radar emitting aircraft :

During the Gulf War, the HARM was involved in a friendly fire incident when the pilot of an F-4G Wild Weasel escorting a B-52 bomber mistook the latter's tail gun radar for an Iraqi AAA site. (This was after the tail gunner of the B-52 had targeted the F-4G, mistaking it for an Iraqi MiG.) The F-4 pilot launched the missile and then saw that the target was the B-52, which was hit. It survived with shrapnel damage to the tail and no casualties. The B-52 was subsequently renamed In HARM's Way.[4]