Template:This month in ham radio history/6

• 12 June 1851 – British physicist Oliver Lodge, an early radio experimenter who developed tuned "syntonic" circuits, was born.
• 15 June 1988 – AMSAT's Phase 3C satellite was launched on an Ariane rocket from Kourou and became AMSAT-OSCAR 13.
• 16 June 1983 – AMSAT's Phase 3B satellite was launched on an Ariane rocket and became AMSAT-OSCAR 10, reaching a high elliptical orbit.
• 19 June 1934 – President Franklin Roosevelt signed the Communications Act of 1934, which created the Federal Communications Commission.
• 28 June 1910 – Antenna pioneer John Kraus, W8JK, inventor of the helical antenna and the W8JK close-spaced beam, was born in Ann Arbor, Michigan.
• 29 June 2004 – AMSAT's Echo satellite was launched on a Dnepr rocket from Baikonur and became AMSAT-OSCAR 51.
• 30 June 1948 – Bell Labs publicly announced the invention of the transistor at a press conference in New York.
• 30 June 1961 – Lee de Forest, inventor of the Audion vacuum tube, died in Hollywood at age 87.