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Graphical Frequency Allocations
The above relation is a fact of physics. Archived copy as title Use dmy dates from May All articles with unsourced statements Articles with unsourced statements from April Radio amateurs use a variety of transmission modes, including Morse coderadioteletypedata, and voice. BenAlabaster Some out-of-ham-world perspective: Use is only allowed on a non-interference basis to other users, as per ITU footnote 5.