Kenwood TS-890S Operation Manual - Page 108

. .. 8 TRANSMIT FUNCTIONS Speech Processor In the SSB mode, TX output power varies according to the loudness of the audio from the transmitting transceiver, which may sometimes cause audibility to deteriorate at the receiving transceiver. A speech processor can be used in this case to compress signals via digital signal processing to raise the average power. Similarly, using the speed processor in the AM or FM mode stabilizes the degree of modulation regardless of the loudness of the audio from the transmitting transceiver and helps to enhance intelligibility. Amplitude Level Speech Processor ON Time Amplitude Level Speech Processor OFF Time Turning ON/OFF Speech Processor 1 Press the mode key to select either SSB, AM or FM mode. 2 Press F [PROC]. Pressing F [PROC] each time toggles the speech processor between ON and OFF. • When the speech processor is set to ON, "PROC OUT:nnn" is displayed at the top of the screen. [nnn: 0 to 100] ● The speech processor also functions with respect to audio input from the ANI terminal of the ACC 2 connector or the (USB-B) connector on the rear panel of this transceiver. Configuring the Speech Processor Input Level 1 Press and hold F [PROC] to display the Speech Processor configuration screen SSB/SSB-DATA/AM/AM-DATA Mode 2 Press F2 [ ]/ F3 [ ] to select "Input". 3 Press F4 [-]/ F5 [+] or turn the [MULTI/CH] control to adjust the input level. Setting Value 0 to 50 (default) to 100 (1 step) 4 Press and hold F [PROC] or press [ESC] to end the process. ● The speech processor input level is used to adjust the input level of the mixed audio between the audio source input configured for microphone gain and that configured on the audio source input screen. ● Switching the mode at the transmitting end to a nonaudio mode while the Speech Processor configuration screen is displayed ends the Speech Processor configuration screen. Configuring the Speech Processor Output Level 1 Press and hold F [PROC] to display the Speech Processor configuration screen. 2 Press F2 [ ]/ F3 [ ] to select "Output". • "Output" is not displayed when the transmitting transceiver is in the FM mode. 3 Press F4 [-]/ F5 [+] or turn the [MULTI/CH] control to adjust the output level. • The output level can also be adjusted by turning the [MIC/ PITCH)] control. Setting Value 0 to 50 (default) to 100 (1 step) 4 Press and hold F [PROC] or press [ESC] to end the process. ● Configuring the output to a level that is too high causes distortion to occur in the TX signals and deterioration in the radio wave quality as a result. ● The speech processor output level is applied to both the audio input from the microphone as well as the audio source configured on the audio source input screen. ● The speech processor output level is fixed and not changeable in the FM mode. Configuring the Speech Processor Effect It is possible to configure how TX signals are to be processed by the speech processor. Press F6 [EFECT]. Pressing F6 [EFECT] each time switches the effect type. Setting Value Soft (default)/ Hard FM/FM-DATA Mode Hard: Places priority on raising the average power although signals may remain distorted. Soft: Places priority on reducing the level of distortion with minimal effect on raising the average power. ● The speech processor effect selected is the same in each mode. ● Switching the mode at the transmitting end to a nonaudio mode while the Speech Processor configuration screen is displayed ends the Speech Processor configuration screen. 8-4