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Template:This month in ham radio history/10
- 4 October 1957 – The Soviet Union launched Sputnik 1, whose signals on 20.005 and 40.002 MHz were tracked by hams around the world.
- 6 October 1914 – Edwin Armstrong received US Patent 1,113,149 for his regenerative receiving circuit.
- 6 October 1981 – UoSAT-OSCAR 9, built at the University of Surrey in England, was launched from Vandenberg on a Delta rocket.
- 8 October 2015 – Fox-1A, the first of AMSAT's Fox CubeSats, launched on an Atlas V and became AO-85.
- 10 October 1982 – Pope John Paul II canonized Maximilian Kolbe, the Polish friar who died at Auschwitz in 1941 and whose friary radio station used the call sign SP3RN.
- 14 October 2023 – Hams joined HamSCI's Solar Eclipse QSO Party during an annular solar eclipse, making contacts to help study the ionosphere.
- 17 October 1919 – Frank Conrad played phonograph records for local amateurs over his experimental station 8XK in Wilkinsburg, Pennsylvania, starting semi-regular entertainment broadcasts.
- 26 October 1978 – The Soviet Union launched Radio Sputnik 1 and 2 (RS-1 and RS-2), its first amateur radio satellites, together on one rocket from Plesetsk.
