... hm. Alphabets can complicate things. ASL and Combat Sign are not, after all, exactly languages either, but we treat them as such. Morse code is one of the more complex 'alphabets' out there, a sort of binary (or, well, trinary), and the problem with using it as a Specialization is that you'd theoretically have to buy the specialization for every language you had. I think I'd rule that you'd need a language-type skill for it, but with a max skill of 4, because of the innate limitations of the thing - you are, after all, spelling words out one letter at a time and, presuming you're not using some kind of program, it can take time to do it, both in transmission and in reception.