Sourcing and citations: while many facts quoted in the article may seem self-evident to Wikipedians who hold amateur licenses, they need to have their sources cited in order to meet WP:V. FCC amateur regulations, ARRL publications, etc. are all good resources to obtain such cites from.
Future expansion: Need information on digital modes. This would also seem to lead to where the future of the hobby is headed, for example, with modes such as FT8, along with modes like JS8 that allow for actual conversations.
