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October 24th 03, 12:04 AM
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In article , Paul Keinanen
writes: On 22 Oct 2003 20:21:16 GMT, (Avery Fineman) wrote: Bill, I just dug out the 1977 issues of HR from storage and looked the article over. Author Richard Slater (W3EJD) said almost the same thing at the end of the article on page 15 under "closing comments." The nomenclatures for different modulations were formalized by the ITU-R since then but the FCC still doesn't have anything covering this "single-sideband FM" modulation type for U. S. amateur radio. The ITU-R emission designations are quite outdated and many modern emissions use din commercial and military systems would be designated as XXX. In each case the X means "none above" in the corresponding column. Okay, I won't argue the ITU-R thing since I haven't had the ability (by working for a subscribing corporation) to access them. I was going by the "Red Book" information from the U. S. National Telecommunications and Information Agency (NTIA). Over here the NTIA regulates government radio use while the U. S. Federal Communications Commission regulates civil radio use. The method of specifying modulation type, bandwidth, etc., are all explained in there and the FCC follows the same nomenclature. Anyway, why should the amateur radio regulations contain these ITU-R designations ? Here in Finland, ITU-R emission designations were removed from amateur radio regulations and exam in 1997 and only band specific power and bandwidth limits are used. I haven't heard of any problems due to this decision. That's a whole other area that, for amateur radio use, can be and has been argued in rec.radio.amateur.policy. As far as I'm concerned, and no one has ever proved otherwise, electrons, fields, and waves all follow the Laws of physics...and they don't give a @#$%!! about human laws. :-) Len Anderson retired (from regular hours) electronic engineer person |
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