User contributions for CDM 1948
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5 June 2015
- 16:5216:52, 5 June 2015 diff hist +106 m Vintage Radio →Vacuum tube schematics current
31 December 2014
- 06:4506:45, 31 December 2014 diff hist +21 m Callsign database No edit summary
- 06:4306:43, 31 December 2014 diff hist +21 m Callsign database Update US callsign prefixes per FCC publication <http://wireless.fcc.gov/services/index.htm?id=amateur&job=call_signs_1>