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1
PANEL DESCRIPTION
#6 AUDIO PEAK FILTER CONTROL [APF]
(inner control; p. 27)
Varies the peak frequency of the audio peak filter to
pick out a CW signal from interference while the
APF function is ON.
#7 AUDIO PEAK FILTER SWITCH [APF] (p. 27)
•Turns the audio peak filter ON and OFF when
pushed.
- The APF indicator appears in the LCD.
- The audio peak filter functions in CW only.
•Toggles the bandwidth of the audio peak filter be-
tween 320, 160 or 80 Hz when pushed for 2 sec.
- Use the [APF] control to vary the peak frequency.
#8 AUTO NOTCH SWITCH [AUTO NOTCH] (p. 26)
Turns the auto notch function ON and OFF.
- The auto notch functions in SSB only.
✔
What is the notch function?
The notch function eliminates unwanted CW or AM carrier
tones while preserving the desired signal’s audio re-
sponse. The filtering frequency is adjusted to effectively
eliminate unwanted tones via the DSP circuit.
#9 PASSBAND TUNING CONTROLS [TWIN PBT]
Adjust the receiver’s “passband width” of the 455
kHz and 9 kHz IF filters for the inner and outer con-
trols, respectively. (p. 25)
- Passband width and center frequency are displayed in
the LCD.
- Set to the center positions when not in use.
- Variable range depends on the filter selection. ±1.29
kHz in 15 Hz steps and ±258 kHz in 3 Hz steps are
available.
✔
What is the PBT control?
The PBT function electronically narrows the IF passband
width to reject interference. The PBT is especially effec-
tive in SSB operation and is not available in FM opera-
tion.
$0 LOCK INDICATOR [LOCK] (p. 38)
Lights when the dial lock function is activated.
$1 MEMO PAD-READ SWITCH [MP-R] (p. 46)
Each push calls up a frequency and operating mode
in a memo pad. The 5 (or 10) most recently pro-
grammed frequencies and operating modes can be
recalled, starting from the most recent.
- The memo pad capacity can be expanded from 5 to 10
in set mode for your convenience. (p. 59)
$2 KEYPAD
•Pushing a key selects the operating band.
- [GENE] selects the general coverage band.
•Pushing the same key 2 or 3 times calls up other
stacked frequencies in the band. (p. 23)
- Icom’s triple band stacking register memorizes 3 fre-
quencies in each band.
•After pushing [F-INP•ENT], enters a keyed fre-
quency or memory channel. Pushing [F-INP•ENT]
or [Y]/[Z] is necessary at the end. (pgs. 23, 41)
- e.g. to enter 14.195 MHz, push [F-INP•ENT] [1] [4] [•]
[1] [9] [5] [
F-INP•ENT].
$3 MEMO PAD-WRITE SWITCH [MP-W] (p. 46)
Programs the selected readout frequency and op-
erating mode into a memo pad.
- The 5 most recent entries remain in memo pads.
- The transmit frequency is programmed when pushed to-
gether with [XFC].
- The memo pad capacity can be expanded from 5 to 10
in set mode for your convenience. (p. 59)
$4 RECEIVE INDICATOR [RX]
Lights green while receiving a signal and when the
squelch is open.
$5 TRANSMIT INDICATOR [TX]
Lights red while transmitting.
$6 LCD FUNCTION DISPLAY (See p. 9 for details.)
Shows the operating frequency, function switch
menus, spectrum screen, memory channel screen,
set mode settings, etc.
