If Filter Selection; If Shift Function - Icom IC-R2500 Instruction Manual

■ IF filter selection
The receiver has 2 to 4 passband width IF filters for each
mode. Selectable passband width are from 3, 6, 15, 50 and
230 (depending on the selected mode).
• Selectable passband width for each mode.
SSB mode : 3 (2.8 kHz) or 6 kHz
CW mode : 3 (2.8 kHz) or 6 kHz
AM mode : 3 (2.8 kHz), 6 kHz, 15 kHz or 50 kHz
WFM mode: 50 kHz or 230 kHz
FM mode : 6 kHz, 15 kHz or 50 kHz
q Push [SET•SKIP] to enter set mode.
w Push [SET•SKIP] or [ATT•PRIO] several times until "VSC"
appears.
[SET•SKIP]
[ATT•PRIO]
[DIAL]
e Rotate [DIAL] to select the desired IF passband width.
r Push any switch for main band to exit set mode.

■ IF shift function

[
The IF shift function electronically changes the passband fre-
quency of the IF (Intermediate frequency) and cuts out higher
or lower frequency components of the IF to reject interfer-
ence. This function is available when the receive mode is se-
lected SSB or CW mode, and shifts the IF frequency up to
±25 steps in 1 step (50 Hz).
q Push [SET•SKIP] to enter set mode.
w Push [SET•SKIP] or [ATT•PRIO] several times until "SFt"
appears.
[SET•SKIP]
[ATT•PRIO]
[DIAL]
e Rotate [DIAL] to set the shifting direction and frequency
range.
r Push any switch for main band to exit set mode.
BASIC OPERATION
Center position
(default)
Lowest
4
[
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
Highest
16