An Earthman on Venus (originally titled "The radio man")

"An Earthman on Venus" by Ralph Milne Farley is a science fiction novel first serialized in 1924. When electrical engineer Myles Cabot vanishes during an experiment in Boston, he awakens on Venus among the Formians—a race of ant-like creatures. Discovering the enslaved, human-like Cupians, Cabot escapes captivity and falls for Princess Lilla. Armed with knowledge of gunpowder, he must decide whether to spark a revolution against the Formian masters in this interplanetary adventure of romance and rebellion. (This is an automatically generated summary.)