Kenwood TS-990S Operation Manual - Page 179
Delaying The Audio Signal, Tx Monitor, Adjusting The Tx Monitor Level
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DELAYING THE AUDIO SIGNAL While using VOX, there is a time lag between the time you start talking on the microphone and the time the transceiver begins transmitting. As a result, speech clipping may occur. To prevent this as much as possible, set a VOX voice delay time (a time lag) to transmit the audio signal after the transceiver is placed into a transmit state. 1 Select Group No. 6, "TX/RX Filters & Misc.", from the Menu screen. 2 Access Menu 09, "VOX Voice Delay (Microphone)". If anything other than the Microphone is configured for the audio source for transmission, access Menu 10, "VOX Voice Delay (Except Microphone)". {page 9-1} 3 Press [SELECT] (F4) to allow editing of the parameter box. TRANSMIT FUNCTIONS 9 TX MONITOR You can monitor the audio during transmission. This function is convenient when you check the effectiveness of the speech processor or TX DSP equalizer. In FSK and PSK modes, you can monitor FSK and PSK signals to be transmitted from the transceiver. 1 Press [MONI] to enable or disable the transmit monitor. The "MONI" LED lights green while the TX monitor is active. 4 Press [ ] (F2) or [ ] (F3) to select the VOX Voice Delay Time. • Select "Off", "Short", "Medium", or "Long". • The default is "Medium". 5 Press [ ] (F1). 6 Press [MENU] to exit. ADJUSTING THE TX MONITOR LEVEL With this transceiver, you can adjust the monitor level of the transmission audio. 1 Rotate the MONITOR control to adjust the volume level of the TX Monitor. Note: ◆◆In SSB, AM and FM modes, an acoustic feedback may result while the speaker is in use. Use a set of headphones, instead. ◆◆The transmission of the CW message cannot be monitored using the TX monitor. You can monitor a CW transmission using the CW sidetone. ◆◆In FM, FSK and BPSK mode, the audio in the TX monitor differs from the audio signal actually transmitted. ◆◆This transceiver has an RF monitor that demodulates the modulated waves while in SSB and AM modes and an AF monitor while in FM, FSK and PSK modes. The audio in the AF monitor differs from the audio actually transmitted. ◆◆The ON/OFF status of the TX monitor is stored in the memory for each of the mode groups below. ◆◆SSB/ FM/ AM ◆◆SSB-DATA/ FM-DATA/ AM-DATA ◆◆FSK/ PSK Contents Index 9-5