Talk:Types of radio emissions

A4
Have "A4" and other symbols with "4" (facsimile), been officially discontinued? 121a0012 (talk) 02:34, 18 December 2011 (UTC)
 * Found the answer, thanks to the ITU putting all of the old editions online. It was part of the old symbology (see 1976 edition) along with A5 for television.  I added a few notes.  121a0012 (talk) 03:27, 18 December 2011 (UTC)

PSK31 - G1B or J3D?
I see a big change in this edit. Not a single character is common between the two codes! On Google, "PSK31 G1B" gets 6,480 hits, while "PSK31 J3D" gets only 1,150. The trouble is that most of them in both cases are to discussions where everyone has their own opinion. In the spirit of WP:V, does anyone have a reliable source that could solve the problem, without everyone getting their oscilloscopes out to try to debate it to death via WP:OR? --Nigelj (talk) 21:07, 30 January 2013 (UTC)

Property proposal for ITU radio emission designation on Wikidata
Hey, I wanted to bring this d:Wikidata:Property proposal/Authority control to your attention. Lots of standardized radio transmission modes and even basic modulation types are lacking Wikidata statements to an internationally agreed system for classifying radio frequency signals such as the ITU designation. I would be happy about your opinions and support on Wikidata. Thanks! --Ptolusque (talk) 10:58, 25 July 2021 (UTC)