Yaesu FTDX9000D Operation Manual

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Page 103FTDX9000D OPERATION MANUALCW S POTTING (Z ERO -B EATING )CW C ONVENIENCE F EATURES“Spotting” (zeroing in on another CW station) is a handytechnique for ensuring that you and the other station areprecisely on the same frequency..For everyday operation, the (CW) PITCH control (# )allows you to set the center of the receiver passband, aswell as the offset pitch of your CW carrier signal, to thetone pitch you prefer to listen to.The front panel’s Tuning Meter may also me moved soyou can adjust your receiver frequency to center the in-coming station on the pitch corresponding to that of yourtransmitted signal.Using the SPOT SystemIf you press and hold in the front panel’s BK-IN/SPOTkey (# ), the Spot tone will be heard. This tone corre-sponds to the pitch of your transmitted signal, and if youadjust the receiver frequency to match the pitch of the re-ceived CW signal to that of the Spot tone, your transmit-ted signal will be precisely matched to that of the otherstation.Advice In a tough DX pile-up, you may actually want to usethe SPOT system to find a “gap” in the spread of call-ing stations, instead of zeroing in precisely on the laststation being worked by the DX station. From the DXside, if a dozen or more operators (also using Yaesu'sSPOT system) all call precisely on the same frequency,their dots and dashes merge into a single, long tonethat the DX station cannot decipher. In such sitiuations,calling slightly higher or lower may get your callthrough. The bar indicator on the front panel may be utilizedfor CW frequency adjustment, as well. Its configura-tion is set via Menu item DISPLAY 016 BAR DIS-PLAY SELECT; at the factory, the bar indicator isalready set up for the “CW TUNE” selection.Quick Point The CW Spotting process utilizes the Spot tone or thebar indicator, with the actual offset pitch being set bythe (CW) PITCH control on the front panel. Theoffset pitch may be set to any frequency between 300Hz and 1050 Hz, in 50 Hz steps, and you can eithermatch tones audibly (using the BK-IN/SPOT key)or align the receiver frequency so that the central LEDon the abr indicator lights up. Note that there are 51“dots” on the bar indicator, and depending on the reso-lution selected, the incoming CW signal may fall out-side the visible range of the bar indicator, if you arenot reasonably close to the proper alignment of tones. The displayed frequency, on CW, normally reflectsthe “zero beat” frequency of your offset carrier. Thatis, if you were to listen on USB on 14.100.00 Mhz toa signal with a 700 Hz offset, the “zero beat” frequencyof that CW carrier would be 14.000.70 MHz; the lat-ter frequency is what the FT DX 9000D displays, bydefault. However, you can change the display to beidentical to that of what you would see on SSB byusing Menu item MODE-CW 050 CW-FREQ DIS-PLAY and setting it to “FREQ” instead of its default“PITCH” setting.BK-IN/SPOT switchPITCH knobPITCH knobMain Tuning DialBK-IN/SPOT switchRetune (Shift to Higher Frequency)Retune (Shift to Lower Frequency)Zero-In: When the CW reverse feature is activated,the indication of the Tuning Offset Indicator is oppositely