> Leigh/WA5ZNU wrote: > I don't want to hazard a guess why Hellschreiber, which > faxes pictures of characters, is used in the data band and > now the phone/image band.
Hi Leigh, The "regulation by content" has been a growing thorn in the FCC rules. While it once was considered quaint, at this point in ham radio technology, "content" has become an absolutely absurd way to regulate subbands. This is one of the things that keeps USA hams stuck in technology jail while the rest of the world's hams point and laugh. For a long time, Hell on HF data subbands was in the gray area of "content" rules for FCC. But, in spite of thousands of hams operating Hell in the data subbands for many years, FCC never issued notices! Recent rules enacted in December 2006, specifically allow Hell within USA's HF data subbands (if less than 500Hz bandwidth). Bonnie KQ6XA
