That's correct. "antennae" is actually both plural and singular for what's on the heads of many insects. In electronics, plural of antenna is antennas.I took no Latin, but it helps to at least know the rules of the various languages that fed English if you're going to work with the written language for a living. A similar situation to mediums/media occurs with the plural of antenna. If you're talking about radio, it's antennas, but it's antennae for moths.
All this is pretty basic. So many folks in our industry majored in "Journalism", but seemingly didn't pass "English". I've heard folks on television news say "phenomenons" instead of phenomena. I don't get it...this is basic High School stuff...