‰ NOW 15 WPM ‰ TEXT IS FROM OCTOBER 2017 QST PAGE 34 ‰ FREQUENCY BROADCASTS OF WWV AND CHU AT HIGHER FREQUENCIES. SIMILAR SHORTWAVE SIGNALS ARE AVAILABLE IN OTHER PARTS OF THE WORLD. DURING THE CALIBRATION PROCEDURE, THE RADIOS USB DIAL FREQUENCY IS OFFSET 1,500 HZ BELOW EACH FREQUENCY IN THE LIST. AS SHOWN IN FIGURE 7, DETECTED SIGNAL CARRIERS THEREFORE APPEAR AT ABOUT 1,500 HZ IN THE WSJT X WATERFALL. WITH MODERN SYNTHESIZED RADIOS, SMALL MEASURED OFFSETS FROM 1,500 HZ WILL EXHIBIT A STRAIGHT LINE DEPENDENCE ON FREQUENCY. YOU CAN APPROXIMATE THE ‰ END OF 15 WPM TEXT ‚