!2 NOISE BLANKER KEY 
 (FM sec. 5)
  (Mode: SSB/CW/RTTY/AM)
 Push to turn the noise blanker ON or OFF.  ➥
     The noise blanker reduces pulse-type noise such 
as that generated by vehicle ignition systems. The 
noise  blanker  is  not  effective  for  non-pulse-type 
noise.
  •“NB”appearswhenthenoiseblankerisON.
 Hold down for 1 second to display the “NB” screen.  ➥
Push to return to the previous screen.
!3  KEY SPEED/CW PITCH ADJUSTMENT KEY  
 (FM sec. 4, 6)
   Push  to  open  the  Key  speed/CW  pitch  adjustment 
display.
 •Rotate[M-CH] to adjust the keying speed of the inter-
nal  electronic  CW  keyer  to  between 6  wpm  (minimum) 
and 48 wpm (maximum).
 •Rotate [BANK]
  to  shift  the  received  CW  audio  pitch 
and the CW sidetone pitch without changing the operat-
ing frequency.
 •TheCWpitchcanbeadjustedfrom300to900Hzinap-
proximately 5 Hz steps.
 •Pushagaintoclosethewindow.
!4  NOISE REDUCTION KEY 
 (FM sec. 5)
Push to turn DSP noise reduction ON or OFF. ➥
  •“NR”appearswhennoisereductionisON.
 Hold down for 1 second to display the “NR” screen.  ➥
Push to return to the previous screen.
  •Rotate the Dial to adjust the DSP noise reduction
level. Set for maximum readability.
!5  PREAMP•ATTENUATOR KEY 
  ❍ PREAMP KEY Operation (FM sec. 5)
    (Frequency band: HF, 50/70 MHz)
  Push  to select  one  of  two  receive RF  preampli-
fiers, or to bypass them.
  •“P.AMP1”isawidedynamicrangepreamplier.Itis
most effective for the 1.8 to 21 MHz bands.
  •“P.AMP2”isahigh-gainpreamplier.Itismosteffec-
tive for the 24 to 70 MHz bands.
  •Noindicatorappearswhenthepreampliersarenot
selected.
✔ What is the preamplifier?
The preamplifier amplifies signals in the front end 
to improve the S/N ratio and sensitivity. Select “P. 
AMP1”  or  “P.  AMP2”  when  receiving  weak  sig-
nals.
    (Frequency band: 144/430 MHz)
  Push to turn the preamplifier ON or OFF.
  •“P.AMP”appearswhenthepreamplierisON.
  ❍ ATTENUATOR KEY Operation (FM sec. 5)
  ➥  Hold down for 1 second to turn ON the attenu-
ator.
   •“ATT”appearswhentheattenuatorisON.
 ➥  Push to turn OFF the attenuator.
   •“ATT”disappears.
✔ What is the attenuator?
The attenuator prevents a desired signal from be-
ing distorted when very strong signals are near it, 
or when very strong electromagnetic fields, such 
as from a broadcasting station, are near your lo-
cation.
Controller — Front panel (Continued)
PBT RIT
TX / RX
PWR
AF RF/SQL
CLR
M-CH BANK
RIT
TUNER/CALL
MENU
MIC/RF PWR
NB
SPEED/PITCH
SET
QUICK
NOTCH
DR
AUTO
 
TUNE
RX
�
CS
XFC
SPEECH
MPAD
NR
P.AMP
ATT
i7100
!2 !4!3
!5
!7 !8!6 @0 @1!9