Kenwood TS-990S Operation Manual - Page 180

9 TRANSMIT FUNCTIONS SPEECH PROCESSOR In SSB mode, the audio level of the transmitting transceiver reflects the level of the transmit power and propagates to the receiving transceiver; hence, the audio quality degrades on the receiving transceiver. With the speech processor enabled, the signal is compressed by means of digital signal processing and is transmitted after the average transmit power is increased. In AM and FM modes, the degree of modulation is stabilized regardless of the audio level of the transmitting transceiver, resulting in an improvement in readability. ' ADJUSTING THE SPEECH PROCESSOR INPUT LEVEL 1 Press a mode key to select SSB, AM, or FM mode. 2 Press [PROC/SEL] to enable or disable the Speech Processor. 3 Press [METER] (F) to display the compression level meter (COMP). .PEF
,FZT Level Speech Processor ON Level Speech Processor OFF SPEECH PROCESSOR Time Time 1 Press a mode key to select SSB, AM, or FM mode. 2 Press [PROC/SEL] to enable or disable the Speech Processor. The "PROC/SEL" LED lights green while the speech processor is active. Note: ◆◆The speech processor can function for the audio signal from the ANI terminal of the ACC 2 connector or from the (USB-B) connector on the rear panel. Note: ◆◆The [METER/COMP] (F) key appears only if the speech processor is active (the "PROC" LED is lit). 4 Press [SEND], or hold the PTT (microphone) switch. The transceiver is placed into the transmit state. 5 While you are speaking into the microphone, rotate the PROC IN control to adjust the compression level. While observing the compression level from the compression level meter (COMP), adjust the input level to the speech processor. The readability will drop if the compression level is excessively high. Note: ◆◆The Speech Processor Input Level allows you to adjust the input level of the mixed audio from the audio sourced as configured for Mic Gain and the audio source configured in the Modulation Source screen. 9-6 Index Contents