Kenwood TS-990S Operation Manual - Page 62

4 BASIC OPERATIONS ADJUSTING THE RF GAIN You can adjust the received sensitivity gain. Two independent RF controls are available for the main band and for the sub band, respectively. In normal operation, you can fully rotate the RF control counterclockwise. If an external noise or interference by another station is present, rotate the control counterclockwise slightly to decrease the gain and listen to the received audio. CONFIGURING THE OPERATING BAND You can select your desired operating band. The band can be configured for the main band and the sub band, respectively. With the numeric keypad, you can instantly select an amateur band ranging from the 1.8 MHz band to the 50 MHz band and the general band. The transceiver's band memory function allows you to store up to five configurations for each band, with the last used frequency and operating mode. This can be convenient if you are in a contest, in order to return the frequency and operating mode to their original states each time you change bands. #BOE
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1 Rotate the RF (M) or RF (S) control to adjust the RF gain. Rotate the RF control counterclockwise and adjust the signal to not be below the peak value range, while viewing the peak value on the S-meter. Signals weaker than this level are attenuated. Note: ◆◆Depending on the type of antenna and the band conditions, better reception may sometimes be obtained if the control is rotated slightly counterclockwise rather than always positioned fully clockwise. ADJUSTING THE SQUELCH LEVEL The threshold level for Squelch, a function to eliminate the audible noise on the frequency where no signal is present, can be adjusted. Two independent SQL controls are available for the main band and the sub band, respectively. 4 . 1 Press the band keys [1.8] to [50], [GEN1], and [GEN2] to store the frequency and operating mode. When you press a key, the transceiver stores the VFO frequency and the status of the operating band at that moment, and then enables the operation of the next memory band. Each time you press a key, the band memory cycles from Band Memory 1 to Band Memory 5. The band memory number appears below the frequency display, on the main screen. Note: ◆◆Frequencies outside the band memory frequency range cannot be stored. 1 Rotate the SQL (M) or SQL (S) control to adjust the squelch level. • Rotating the SQL control clockwise raises tightens the squelch level and counterclockwise opens it. • You can rotate the SQL control until the squelch noise disappears. Note: ◆◆The position of the SQL control, where noise disappears, varies depending on the signal, temperature, and operating environment. ◆◆The position of the SQL control in FM mode, where noise disappears, differs from other modes. 4-8 Index Contents