tag:blogger.com,1999:blog-953397841255562532.post5554309306021164203..comments2023-09-30T14:59:05.385+01:00Comments on G4ILO's Blog: Changing the 30m bandplanAnonymoushttp://www.blogger.com/profile/11984840704237681015noreply@blogger.comBlogger6125tag:blogger.com,1999:blog-953397841255562532.post-26890983244702002632011-03-25T19:55:34.540+00:002011-03-25T19:55:34.540+00:00Hi Julian.
There is no "legal bind" to ...Hi Julian.<br /><br />There is no "legal bind" to the bandplan description, but that it is actually a "Gentlemens agreement".<br /><br />In Greece, Law allows use of a given amateur spectrum allocation in any way users see fit, provided they do not cause intentional interference to each other, or to other primary users of the given allocation.<br /><br />So, if a chunk of spectrum is available, i.e. not in use by other users, it is free for use even for 3k wide modes, like SSB! <br /><br />Thus the "Gentlemens agreement" description of the IARU bandplan.<br /><br /> Is is defined as such by radio amateurs because it is extremely difficult (and even vaporizes versatility if you succeed in doing it) to try to embed a spectrum map in every ITU member state Law.<br /><br />ITU member states telecommunication bureaus want versatility regarding their planning of spectrum usage and they wouldn't accept proposals for stict definitions like planning on "per KHZ" basis. <br /><br />If you check with the actual ITU bandplan you will find that restrictions in spectrum usage are so complicated and densely interleaved regarding member states requirements that it is impossible for us hams to develop and implement any band planning other than nation-wise.<br /><br /><br />If there is no way of establishing 2-way communication but using negative SNR tolerant modes, there is no actual "requirement" before their use, but verifying that by using them you are not causing harmful interference to other users.<br /><br /> Technology lapses ahead and we amaterus owe to ourselves to pioneer. If there is a certain "gentlemens agreement" that needs revisioning, that need won't actually establish to our (the very "parts of the agreement") minds unless it is proven on the field first.<br />And to prove that the need is actual and well defined, we need to be able to experiment first. <br />If we hadn't been so far, we would still be stuck to CW and AM. Evolution and experimentation is the base on which most ITU member states laws regarding amateur radio are based anyway, to even stop amateur society from declining itself technological evolution.<br /><br /><br />73 de SV9OFO John<br /> (p.s. sorry, had to fix some typos, me no native english user, hihi).The one with no shadowhttps://www.blogger.com/profile/02976232819183648890noreply@blogger.comtag:blogger.com,1999:blog-953397841255562532.post-83802241172250022082011-03-25T19:49:58.318+00:002011-03-25T19:49:58.318+00:00This comment has been removed by the author.The one with no shadowhttps://www.blogger.com/profile/02976232819183648890noreply@blogger.comtag:blogger.com,1999:blog-953397841255562532.post-5815257815122987652011-03-22T20:26:43.260+00:002011-03-22T20:26:43.260+00:00Julian stick with it just worked VK3AMA on 10.138 ...Julian stick with it just worked VK3AMA on 10.138 this seems to be the choice freq for jt65 HF. What a wonderful program W6CQZ has createdPaddyhttps://www.blogger.com/profile/18411840556381405689noreply@blogger.comtag:blogger.com,1999:blog-953397841255562532.post-38349460486428506792011-03-22T20:10:49.737+00:002011-03-22T20:10:49.737+00:00No. There's a bit more space, less usage (due ...No. There's a bit more space, less usage (due to propagation) and there appears to be no permanent occupancy by networks and other unattended stations.Anonymoushttps://www.blogger.com/profile/11984840704237681015noreply@blogger.comtag:blogger.com,1999:blog-953397841255562532.post-57285391003661171492011-03-22T19:00:29.681+00:002011-03-22T19:00:29.681+00:00Is the situation similar for 17 and 12 meters?
73...Is the situation similar for 17 and 12 meters?<br /><br />73,<br />Casey, TI2/NA7UCasey Bahrhttps://www.blogger.com/profile/01638230726171327005noreply@blogger.comtag:blogger.com,1999:blog-953397841255562532.post-31514959261735323162011-03-22T14:52:28.510+00:002011-03-22T14:52:28.510+00:00Hi Julian, there not much JT65 activity on 30 mete...Hi Julian, there not much JT65 activity on 30 meter, and you gave the reasons why. So I almost never work JT65A on 30 meter. The band is too small for it. My favourite JT65A bands are 20 meter, 80 meter and sometimes 15 meter. 73 PaulPaul Stam PAØKhttps://www.blogger.com/profile/13472039726489965017noreply@blogger.com