User manual ICOM IC-751

[. . . ] This may result in an electrical shock or burn. Place unit in a secure place to avoid inadvertent use by children. R NEVER apply AC to the [DC13. 8V] jack on the transceiver rear panel. This could cause a fire or ruin the transceiver. During mobile operation, DO NOT operate the transceiver without running the vehicle's engine. When transceiver power is ON and your vehicle's engine is OFF, the vehicle's battery will soon become exhausted. Make sure the transceiver power is OFF before starting the vehicle. [. . . ] This function provides an opportunity to input log entries into your computer, etc. , while operating. [VOX] switch in phone modes · Using the VOX function q Select a phone mode (SSB, AM, FM). w Push [VOX] to turn the VOX function ON or OFF. · Adjusting the VOX function q Select a phone mode (SSB, AM, FM). r Select the VOX gain item using [F-1] or [F-2]. t While speaking into the microphone, rotate the tuning dial to the point where the transceiver is continuously transmitting. y Adjust the VOX delay for a convenient interval before returning to receive. - Select the VOX delay item using [F-1] or [F-2]. - Rotate the tuning dial. ANT 1 BW 2. 4k SFT 0 USB FIL2 qw:pp TX METER Po P. AMP 1 ATT OFF AGC MID VOX ON COMP OFF WIDE VFO qrqotpp 1 14. 100. 00 USB VFO USB FIL2 qrwptpp 1 V O X G a i n Anti-VOX V O X D e l a y 14. 100. 00 VOX USB 50% 50% 0. 2s é è DEF u If the receive audio from the speaker toggles to transmit, adjust the anti VOX to the point where it has no effect. 35 5 RECEIVE AND TRANSMIT s Meter function The transceiver has 4 transmit meter functions for your convenience. Select the desired meter with the [METER] switch. In addition, the transceiver can display the multi-function digital meter in the LCD display, which displays all transmit meters simultaneously. · Analog transmit meter Push [METER] to select RF power (Po), SWR, ALC or compression level (COMP) for transmit metering. [METER] switch · Multi-function digital meter q Push [METER] for 2 sec. to turn the multi-function digital meter ON or OFF. w Push [(F-1)P-HOLD] to toggle the peak level hold function ON or OFF. · "P-HOLD" appears on the window title when the peak level hold function is turned ON. ANT 1 BW 2. 4k SFT 0 USB FIL2 qw:pp TX METER Po P. AMP 1 VFO qrqotpp 1 14. 100. 00 USB VFO USB FIL2 DISPLAY INDICATION Po SWR MEASUREMENT Indicates the relative RF output power in %. Indicates the SWR over the transmission line. w Select a phone mode by pushing [SSB] or [AM/FM]. e Push [(F-2)VOICE] to call up the voice recorder screen. AGC MID VOX OFF COMP OFF WIDE PLAY VOICE RECORDER VOICE R E C O R D E R MENU V O I C E RECORDER M E N U P L A Y T X 15sec. x 4 c h PLAY TX 1 5 s e c . x 4 c h 4ch M I C REC Mic R e c o r d / R e c o r d check MIC R E C M i c Record/Record c h e c k T X LEV. Recorder Output Adjust TX L E V . R e c o r d e r O u t p u t A d j u s t S E T A u t o Monitor SET SET Auto M o n i t o r S E T MIC REC TX LEV. SET 14. 100. 00 14. 100. 00 USB USB 15:30 15:30 8 s 8s ------------- R2 R3 R4 T/R t Push the desired memory channel, [(F-1)R1] ­ [(F-4)R4], momentarily to playback. AGC MID VOX OFF COMP OFF WIDE R1 VOICE RECORDER PLAY R1 R1 R2 R2 R3 R3 R4 R4 14. 195. 00 14. 195. 00 USB USB 10:10 10:10 5 s 5s ------------- r Push [(F-1)PLAY] to select the voice memory screen. · If the transmit voice memory channel (T1­T4) appears, push [(F-5)T/R] to select receive voice memory channel. AGC MID VOX OFF COMP OFF WIDE R1 VOICE RECORDER R1 R1 R2 R2 R3 R3 R4 R4 RX RX M E M O R Y RX RX M E M O R Y R2 R3 R4 T/R y Push the selected memory channel, [(F-1)R1] ­ [(F-4)R4], again to stop playback if desired. u Push [EXIT] twice to exit voice memory screen. 14. 100. 00 14. 100. 00 USB USB 15:30 15:30 8 s 8s ------------- R2 R3 R4 T/R t Push the desired memory channel, [(F-1)R1] ­ [(F-4)R4], for 2 sec. to start recording. · The operating frequency, mode and current time are programmed automatically. · Previously recorded contents are cleared. AGC MID VOX OFF COMP OFF WIDE R1 VOICE RECORDER REC R1 R1 R2 R2 R3 R3 R4 R4 14. 195. 00 14. 195. 00 USB USB 10:10 10:10 10s 10s ------------- RX RX M E M O R Y R2 R3 R4 T/R y Push the selected memory channel, [(F-1)R1] ­ [(F-4)R4], again to stop recording. · Recording is automatically terminated after 15 sec. u Push [EXIT] twice to exit voice memory screen. 38 RECEIVE AND TRANSMIT 5 s Digital voice recorder (continued) · Recording a message for transmit To transmit a message using a voice recorder, record the desired message in advance as described below. q Push [EXIT] one or more times to close a multifunction screen, if necessary. [. . . ] CW) [CW PITCH] setting (0=low pitch to 255=high pitch) [RF POWER] setting (0=min. to 255=max. ) [KEY SPEED] setting (0=slow to 255=fast) [NOTCH] setting (0=low freq. to 255=high freq. ) [COMP] setting (0=min. to 255=max. ) [BK-IN DELAY] setting (0=short delay to 255=long delay) [BAL] setting (0=max. [. . . ]