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User:DV8 2XL, I reverted your overwrite, for the following reasons:
American Radio Relay League is not the only meaning of relay league. In fact, it is not even the only meaning of radio relay league;
the article you overwrote with a redirect contained information on the other topics, which is not found at the redirected article nor appropriate to merge there; and
the only inlink to this page was actually refering to the other topics, not radio relay leagues.