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http://www.iaru-regionii.org/Region_...ex__1_2008.pdf
This plan is supposed to go into effect Jan 1 2008. It's a voluntary plan, not FCC regulations. IMHO: Good Things: 1) The general idea of sorting modes by bandwidth is a valid one. Narrow and wide modes just don't mix well. 2) The plan puts 'robot' (unattended) stations in well-defined places, rather than letting them wander all over the band. 3) There are centres of activity - watering holes - for various activities, like image transmission. This does not mean they can't go on other places, just that there's a defined place to meet. Bad Things: 4) The plan almost completely bans AM voice! From 160 through 10 meters, AM is only allowed on 3600-3625 kHz, 3875-3900 kHz, and 29000-29300 kHz. On all but 10 metres, AM is an asterisk to the 2700 Hz bandwidth. 5) The plan does not agree with other, similar plans, such as the ARRL bandplan. It seems to me that the IARU Region 2 bandplan and the bandplan of the largest amateur radio organization in Region 2 should at least agree. --- The no-AM thing is a big one to me, even though I'm a CW operator. AM is a perfectly legal mode on all US HF/MF amateur bands except 60 and 30 meters, yet the plan says that 'good amateur practice' is to not use AM *anywhere* below 29 MHz except 50 kHz of 80/75 meters. And that's regardless of propagation, number of hams on the band, contests, etc. This sort of thing sets a very bad precedent. It effectively makes the use of a perfectly legal mode 'bad practice' on all but a small percentage of the available-by-law spectrum, and on all but parts of two bands. Now some may say "it's just a voluntary bandplan, not a regulation". And that's true, but it's not the whole story. When interference problems between amateur operations have arisen that do no involve clear Part 97 rules violations, FCC has usually ruled on the side of the amateur operating in accordance with the voluntary bandplan in effect at the time. The most-common example I know are cases where an uncoordinated repeater and a coordinated one have interference issues. AFAIK, the uncoordinated repeater always loses because coordination is good amateur practice. But coordination is really just a form of voluntary bandplan, since we amateurs administer it, not the FCC. It seems to me that under the IARU plan, if I were to operate AM on, say, 40 metres, and an SSB station were to complain about interference from me, I'd be on the defensive from the getgo because, by definition, the SSB op is operating in accordance with the bandplan and I'm not. Most of all, if they can do it to AM, they can do it to other modes. Once the precedent is set, it's just a matter of expanding it. It seems really odd to me that while recent FCC rules changes widened many of the phone bands, particularly on 80/75, this bandplan drastically reduces and eliminates them for AM. Again, IMHO, the IARU can do better. 73 de Jim, N2EY |
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