ICOM 301500 Manuale Utente

q PASSBAND TUNING CONTROLS [TWIN PBT]
   Adjust the receiver’s DSP filter passband width. 

(p. 46)

 • 

 

The limit of the variable range depends on the pass-
band width and mode. The limit of the variable range 
is half of the passband width, and PBT is adjustable in 
25 Hz steps.

Generally, the PBT electronically narrows the IF 
passband width to reject interference. This trans-
ceiver uses the DSP circuit for the PBT function.

PBT2

PBT1

Low cut

High cut

Center

–

+

w NOISE BLANKER KEY 

 (p. 49)

 

±  Push to turn the noise blanker function ON or 

OFF.

  • 

“

” appears on the display.

 

±  Push and hold for 1 sec to enter the noise 

blanker set mode; push again to return to normal 
operation.

  • 

 

Before entering the noise blanker set mode, the 
noise blanker function is turned ON.

 What is the noise blanker?
The noise blanker reduces pulse-type noise such 
as that generated by automobile ignition systems. 
This function is not effective against non pulse-type 
noise.

e NR  KEY 

 (p. 50)

 

±  Push to turn the noise reduction function ON or 

OFF.

  • 

“

” appears on the display.

 

±  Push and hold for 1 sec. to enter the noise re-

duction level set mode; push again to return to 
normal operation.

  • 

 

Before entering the noise reduction set mode, the 
noise reduction function is turned ON.

 What is the Noise Reduction function?
The Noise Reduction (NR) function removes ran-
dom noise from the receiver passband. The level is 
adjustable to allow maximum clarity without harm-
ing the intelligibility of the desired signal. Noise Re-
duction should generally not be used with digital 
modes.

1

1

i7200

Speaker

t

r

e

w

Function
Display (p. 7)

u

i

y

q

o

N Front panel