[lemma=spectrum] [tag=","] [□=□] □
[lemma=spectrum] [tag=","] [lemma=□] □
[lemma=spectrum] [tag=","] [tag=□] □
Developing nations are already concerned about their future access to orbital slots and usable radio – frequency spectrum , and officials from some nations worry that space weaponization by developed nations could make it more difficult for developing countries to achieve the benefits provided by space assets .