Kenwood TS-890S Operation Manual - Page 101

SCOPE FUNCTIONS 7 Band 24 MHz Band 28 MHz Band 50 MHz Band 70 MHz Band (E Type) Configurable Frequency Range [MHz] 22.00 ≦ f ＜ 26.00 26.00 ≦ f ＜ 30.00 30.00 ≦ f ＜ 60.00 30.00 ≦ f ＜ 74.80 Range No. 1 2 3 1 2 3 1 2 3 1 2 3 Default Default Lower Limit Upper Limit [MHz] [MHz] 24.890 24.890 24.930 28.000 28.000 28.300 (K type) 28.200 (E type) 50.000 50.000 50.100 70.000 70.000 70.250 24.990 24.930 24.990 28.500 28.300 (K type) 28.200 (E type) 28.800 (K type) 28.700 (E type) 50.500 50.100 50.300 70.500 70.250 70.500 Marker Centering (Fixed Mode) The scope range can be shifted temporarily with the display frequency span maintained such that the marker of the selected amateur band is displayed near the center (within one grid to the left or right from the center). Press F4 [MKR.CTR]. • If F4 [MKR.CTR] is not displayed, press F [MORE] to display F4 [MKR.CTR]. The scope range is shifted with the frequency span maintained. Selecting Relative or Absolute Frequency Display for the Grid (Center Mode) During carrier point center display in the Center mode, the mode of frequency scale display at the bottom of the bandscope can be switched to one of the options available. Configure in Menu [8-06] "Frequency Scale (Center Mode)" Setting Value Relative Frequency (default)/ Absolute Frequency Relative Frequency: The frequency scale display at the bottom of the scope area represents the relative frequency from the center of the scope. Absolute Frequency: The frequency scale display at the bottom of the scope area represents the absolute frequency. Displaying Tuning Assist Line (SSB Only) A tuning auxiliary line (yellow) referred to as assist line can be displayed parallel to the RX frequency marker during operation in the SSB mode. Set the assist line at 400 Hz to 500 Hz (near the peak of a typical frequency spectrum of a human voice) for voice communication and at the frequency of the subcarrier for data communication. Zero-in can be performed easily by adjusting the assist line to the strongest point of the spectrum on the waterfall. Configure in Menu [8-05] "Tuning Assist Line (SSB Mode)" Setting Value Off (default)/ 300/ 400/ 500/ 600/ 700/ 800/ 1000/ 1500/ 2210 [Hz] ● Changes in the lower and upper frequency limits due to the marker centering operation are temporary, and does not alter the preconfigured lower and upper frequency limits of the scope band in question. Notification on Exceeding the Lower or Upper Limit (Fixed Mode) If the marker frequency falls outside the display range of the bandscope when a frequency marker is displayed on the bandscope in the Fixed mode, a display appears to inform the user that the marker has moved out of the bandscope range. A " " icon appears at the left edge of the bandscope screen if the marker frequency value is smaller than the lower frequency limit, and a " " appears at the right edge if the marker frequency value is larger than the upper frequency limit. The markers indicating that the lower or upper limit is exceeded are color coded as follows. White: RX frequency Red: TX frequency . ● This function works in the Center mode only when Menu [8-03] "Waterfall when Tuning (Center Mode)" is configured to "Straight". ● The tuning assist line is displayed on the upper side with respect to the carrier point in the case of USB and on the lower side in the case of LSB. Configuring the Gradation of the Waterfall The amount of color change with respect to the signal strength in the waterfall display can be configured from a scale of 1 to 10. Configuring a larger value increases the amount of color change making it easier to find weak signals. Configuring a smaller value reduces the amount of color change making it easier to observe strong signals. Configure in Menu [8-04] "Waterfall Gradation Level" Setting Value 1 to 7 (default) to 10 (1 step) .. 7-5