Hi Claude, On 2/4/2015 9:23 AM, Claude Frantz wrote: > Up to now, I have never seen any beacon traffic in this yellow marked > area, but often JT65 traffic. Just now, I can see SM7OYP calling CQ on > my screen in the yellow range, but I cannot call him. And no beacon > traffic there.
Something must be wrong with your frequency calibration. WSPR activity on the 30 m band takes place in the 200 Hz span between 10.140100 and 10.140300. For all but a few users with special hardware, this means setting the USB dial frequency to 10.1387. WSPR generates Tx audio between 1400 and 1600 Hz. WSJT-X uses a default dial frequency of 10.138 on the 30 m band. This means that the nominal "WSPR sub-band" is from 2100 Hz to 2300 Hz. As the WSJT-X error message says, WSJT-X will not knowingly transmit within that sub-band -- as a courtesy to WSPR users. Because the nominal WSPR sub-bands are so narrow -- only 200 Hz -- WSPR users are necessarily very aware of the calibration accuracy of their radio dials. If you say that you have never seen any beacon traffic in this yellow marked area, I must conclude that your dial calibration is off. It is not difficult to measure the frequency calibration error of your radio. For a detailed discussion, see Appendix C of the WSPR User's Guide: http://physics.princeton.edu/pulsar/K1JT/WSPR_4.0_User.pdf For even more detail on making accurate frequency measurements, see "Accurate Frequency Measurements with your WSPR Setup" http://physics.princeton.edu/pulsar/K1JT/FMT_User.pdf -- 73, Joe, K1JT ------------------------------------------------------------------------------ Download BIRT iHub F-Type - The Free Enterprise-Grade BIRT Server from Actuate! Instantly Supercharge Your Business Reports and Dashboards with Interactivity, Sharing, Native Excel Exports, App Integration & more Get technology previously reserved for billion-dollar corporations, FREE http://pubads.g.doubleclick.net/gampad/clk?id=190641631&iu=/4140/ostg.clktrk _______________________________________________ wsjt-devel mailing list wsjt-devel@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/wsjt-devel
