--- In digitalradio@yahoogroups.com, Dave Ackrill <dave.g0...@...> wrote: > > graham787 wrote: > > Ok John ... EU 500 Khz allocation that is (appart from SM) most seem to > > have a 100 Hz tx limit the Uk has 501>504 with no defined BW appart > > from the expected 'dont interfear' and no talking .. SM allows ssb as > > well .... > > > The idea of 'Don't interfere' is understandable, but where does this "Uk > has 501>504 with no defined BW appart from the expected 'dont > interfere no talking" come from? > > It isn't in the current UK regulations, and it wasn't even in the old > regulations... > > There are no regulations in the UK licence conditions, and there were no > such regulations in past years, restricting the bandwidth of the > transmissions within the various Amateur Bands. > > You had to keep within the band edge of course, but this limit as stated > makes no sense and seems to have no basis in any real licence condition > here in the UK at all... > > Dave (G0DJA) >
I don't really see your point , my 500K transmit special research licence states that all modes except voice may be used , with the proviso of no interference to other services and band users .. which is exactly what I stated .. unlike the specific beacon permits for fixed frequency operations , the UK permit also encompassed both normal and experimental operation with in the allocation ..enabling uk operators , as existing armature operators, to use the station for two way communications As my comments regarding bandwidth are linked solely to the 501/504 uk allocation , once again I am able to highlight the difference between the UK permits and the later EU versions , with of course the exception of SM . Now it is quite possible to transmit and use the full 3 khz bandwidth as was the case > http://groups.google.com/group/uk500khz/web/zl2afp-psk-sounder << however to day with the band occupancy , this would be a little anti social as well as infringing the permit conditions but 85 hz shift rtty , 500 hz mfsk three simultaneous data transmission using different modes is quite permissible on 500k under the experimental aspect of the permit ... Hence the original interest in the narrow modes compatibly with the arq function of winmail.fldigi But you are quite right the uk licence makes no reference to mode bandwidth, band plans etc except , from memory there was some definitions based round the microwave allocations but that may of been more to pulse power levels than pulse shape ? I suppose the wide band data using one speech channel , is a bit like parking you motorcycle in a car space , it fits , you pay for your ticket , you pay road tax so what's the problem ? G ..
