Icom IC-7700 Instruction Manual - Page 17

1 PANEL DESCRIPTION MF5 (MULTI-FUNCTION 5 SWITCH) AGC ➥ Activates and selects fast, mid-range MID or slow AGC time constant when pushed. (p. 5-11) • In FM mode, only "FAST" is available. ➥ Enters the AGC set mode when pushed and held for 1 sec. (p. 5-11) AGC time constant can be set between 0.1 to 8.0 sec. (depends on mode), or turned OFF. When AGC is "OFF," the S-meter does not function. ✔ What is the AGC? The AGC controls receiver gain to produce a constant audio output level, even when the received signal strength varies dramatically. Select "FAST" for tuning and then select "MID" or "SLOW" depending on the receiving condition. MF6 (MULTI-FUNCTION 6 SWITCH) COMP OFF WIDE ➥ Turns the speech compressor ON and OFF in SSB mode. (p. 6-5) ➥ Switches the narrow, middle or wide compression when pushed and held for 1 sec. ✔ What is the speech compressor? The speech compressor compresses the transmitter audio input to increase the average audio output level, to increase talk power. This function is effective for long-distance communication or when propagation conditions are poor. 1 / 4 ON TONE OFF ➥ Turns the 1⁄4-speed tuning function ON and OFF in SSB data, CW, RTTY and PSK modes. (p. 3-6) • 1⁄4 function sets dial rotation to 1⁄4 of normal speed for fine tuning. ➥ Switches between the tone encoder, tone squelch function and no-tone operation when pushed in FM mode. (pgs. 4-33, 4-34) ➥ Enters the tone set mode when pushed and held for 1 sec. in FM mode. (pgs. 4-33, 4-34) MF7 (MULTI-FUNCTION 7 SWITCH) VSC ➥ Switches the voice squelch control OFF function ON and OFF; useful for scan- ning. (p. 9-3) #4 LCD FUNCTION SWITCHES F-1 - F-7 Push to select the function indicated in the LCD display above these switches. • Functions vary depending on the operating condition. #5 TRANSMIT INDICATOR [TX] Lights red while transmitting. #6 RECEIVE INDICATOR [RX] Lights green while receiving a signal and when the squelch is open. #7 LCD FUNCTION DISPLAY (p. 1-14) Shows the operating frequency, function switch menus, spectrum scope screen, memory list screen, set mode settings, etc. #8 SPLIT OPERATION INDICATOR [SPLIT] Lights during split frequency operation. #9 LOCK INDICATOR [LOCK] (p. 5-17) Lights when the dial lock function is activated. $0 TRANSMIT FREQUENCY CHECK SWITCH [XFC] (p. 6-6) Monitors the transmit frequency (including ∂TX frequency offset) when pushed and held during split frequency operation. • While pushing this switch, the transmit frequency can be changed with the main dial, keypad, memo pad or ∫ / √ switches. • When the split lock function is turned ON, pushing [XFC] cancels the dial lock function. (p. 6-7) $1 MEMORY UP/DOWN SWITCHES ∫ / √ (p. 8-2) Push to select the desired memory channel. • Memory channels can be selected both in VFO and memory modes. $2 KEYPAD ➥ Pushing a key selects the operating band. (p. 3-4) • GENE • selects the general coverage band. ➥ Pushing the same key 2 or 3 times calls up other stacked frequencies in the band. (p. 3-4) • Icom's triple band stacking register memorizes 3 frequencies in each band. ➥ After pushing F-INPENT , enters a frequency or memory channel. Pushing F-INPENT or ∫ / √ is necessary to end the entry. (pgs. 3-5, 8-2) • e.g. to enter 14.195 MHz, push F-INPENT 1.8 1 10 4 GENE • 1.8 1 28 9 14 5 F-INPENT . 1-7