Icom IC-775DSP [39/67] Meter function

Содержание

FUNCTION OPERATIONS 4 VOX operation Speech compressor The VOX Voice Operated Transmission function toggles between transmit and receive with your voice This function provides an opportunity to input log entries into your computer etc while operating The RF speech compressor increases average RF output power improving signal strength and read ability in SSB Set the VOX GAIN ANTI VOX and DELAY controls maximum counterclockwise Select a phone mode SSB AM FM VOX function is not available for FM DATA mode Push VOX to turn the VOX function ON While speaking into the microphone rotate VOX GAIN clockwise until the transceiver is trans mitting Adjust DELAY for a convenient interval before returning to receive If the receive audio from the speaker toggles to transmit adjust ANTI VOX to the point where it has no effect Preset the transceiver as follows COMP switch ON METER switch COMP MIC control Center position DRIVE control Center position PWR control Max counterclockwise Select SSB mode Set the transceiver to transmit Speak into the microphone at your normal voice level Adjust MIC for a peak reading of COMP scale between 10 dB and 20 dB DELAY Set METER to the ALC position Adjust DRIVE for an ALC meter reading within ALC zone VOX GAIN P NOTE DO NOT set MIC and DRIVE too far p clockwise This will distort your signal and cause P QRM Meter function SWR reading The transceiver has 6 transmit meter functions for your convenience Select the desired meter with the METER switch The SWR meter indicates the SWR over the trans mission line in all modes SWR Indicates the SWR over the transmission line Po Indicates the relative RF output power in watts ALC Indicates the ALC level When the meter movement shows the input signal level exceeds the allowable level the ALC limits the RF power In such cases reduce the MIC control COMP Indicates the compression level when the speech compressor is in use ID VD Indicates the drain s current of the final FET Indicates the drain s terminal voltage of the final FET D Push TUNER to turn the antenna tuner OFF Set METER to the Po position Push RTTY to select RTTY mode Push TRANSMIT Rotate PWR clockwise past 12 o clock for more than 30 W output power Set METER to the SWR position Read the SWR on the SWR scale P NOTE The built in antenna tuner matches the p transmitter to the antenna when the SWR is lower P than 3 1 36