Matches in DBpedia 2014 for { ?s ?p <http://dbpedia.org/resource/Category:Amateur_radio_history> . }
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- 1913_London_International_Radiotelegraphic_Convention subject Category:Amateur_radio_history.
- CQD subject Category:Amateur_radio_history.
- Cambridge_University_Wireless_Society subject Category:Amateur_radio_history.
- Communication_during_the_September_11_attacks subject Category:Amateur_radio_history.
- Congress_Radio subject Category:Amateur_radio_history.
- Duga-3 subject Category:Amateur_radio_history.
- History_of_amateur_radio subject Category:Amateur_radio_history.
- Kettering_Grammar_School subject Category:Amateur_radio_history.
- North_Sea_flood_of_1953 subject Category:Amateur_radio_history.
- Radio_Act_of_1912 subject Category:Amateur_radio_history.
- Sputnik_1 subject Category:Amateur_radio_history.
- War_Emergency_Radio_Service subject Category:Amateur_radio_history.
- Women_in_early_radio subject Category:Amateur_radio_history.