I am not sure if there's an antonym for jam as in "they jammed our radio signals". Is there? I looked up dictionaries and thesauruses and I haven't found a single antonym for the verb jam as in "jamming a radio signal". There are antonym related to different definitions of jam, but not the one I am looking for. What are the words that can qualify as an antonym?
I am thinking there are phrasal verbs or other verbs that are not quite the same as antonyms that could be provided as answers, but I am not sure if these words can technically be used as antonyms.