Today in space history, 45 years ago — March 9, 1965 — a Thor-Agena D-model rocket launched eight satellites at once from Vandenberg AFB.
(A 1962 Thor-Agena-D launch. USAF image from Wikimedia Commons.)
Not only was it the first time eight spacecraft had been launched at the same time, but one of those satellites — Oscar-3 — was the first solar-powered amateur radio repeater in orbit. More than a thousand amateur radio operators in 22 countries around the world used Oscar-3 (Orbital Satellite Carrying Amateur Radio) for 18 days before its transponder failed.
You can read more about Oscar-3 and amateur satellite radio on this page.by