Справочник Пользователя для ICOM 318200

32

3

BASIC OPERATION

N

Adjusts the RF gain and squelch threshold level. The 
squelch removes noise output to the speaker when no 
signal is received (closed position).

s

also be used in other modes.

s

effective use of the [RF/SQL] control.

s

is fixed open) or only a squelch control (RF gain is fixed at 
maximum sensitivity), depending on the “RF/SQL Control” 
setting in the Set mode. (p. 86)

RF+SQL

(default)

FM

Operates as an RF 
gain control, and a 
noise squelch or S-
meter squelch.

SSB/CW/

RTTY/AM

Operates as an RF 
gain control, and an S-
meter squelch.

SQL

ALL

Operates as only a 
squelch control.

s

mum sensitivity.

AUTO

SSB/CW/

RTTY

Operates as only an 
RF gain control.

s

AM/FM

Operates as only a 
squelch control.

s

mum sensitivity.

M

s

duces sensitivity.

s

While rotating the RF gain control, noise may be 
heard. This comes from the DSP unit and does not 
indicate an equipment malfunction.

M

s

S-meter squelch— this allows you to set a minimum signal 
level needed to open the squelch.

[RF/SQL]

Maximum 
RF gain

S-meter 
squelch

Noise squelch (FM mode)

Squelch is 
open.

RF gain 
adjustable
range

Recommended level

(RF gain is fixed at maximum.)

Squelch is 
open.

S-meter 
squelch

S-meter squelch
threshold

Noise squelch 
threshold 
(FM mode)

Shallow

Deep

Noise squelch (FM mode)

(Squelch is fixed open; SSB, CW, RTTY only)

Minimum RF gain

Adjustable
range

Maximum 
RF gain