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BANDWIDTH Buttons
( NOR/NAR1/NAR2 ) Buttons
These three buttons select the 2nd and 3rd IF fil-
ters for the receiver (except in the FM mode). The LED
inside each button glows red when the corresponding
bandwidth is selected.
The available 2nd and 3rd IF filters are as follows:
MODE
( 8.2MHz )
SSB
2.4 kHz/ATT
CW
2.0/2.4 kHz
AM
RTTY/PKT/USER
2.4 kHz
ø1: You can select the bandwidth via menu selection 5-0. The first value (bandwidth) is factory default.
ø2: You can select the bandwidth via menu selection 5-2. The first value (bandwidth) is factory default.
ø3: You can select the bandwidth via menu selection 5-4. The first value (bandwidth) is factory default.
Note 1 - In the factory default condition(menu selection 5-0 set to "OFF"), the SSB NAR 1 bandwidth is "2.0 kHz/2.0
kHz (2nd IF/3rd IF)" and the SSB NAR 2 bandwidth is disabled. If you set the SSB NOR bandwidth to "ATT/
6.0 kHz (2nd IF/3rd IF)" via menu selection 5-0, the NAR 1 bandwidth will be set to "2.4 kHz/2.4 kHz (2nd
IF/3rd IF)" and the NAR 2 bandwidth will be set to "2.0 kHz/2.0 kHz (2nd IF/3rd IF)" automatically.
Note 2 - The 2nd IF (8.2 MHz) 2.0-kHz BW filter (Yaesu P/N YF-114SN) and 250 Hz BW filter (Yaesu P/N YF-
114CN) and 3rd IF (455 kHz) 2.0-kHz BW filter (Yaesu P/N YF-110SN), 500 Hz BW filter (Yaesu P/N YF-
115C) and 250 Hz BW filter (Yaesu P/N YF-110CN) are option.
Note 3 - The Sub Receiver uses a double-conversion circuit with 47.21 MHz and 455 kHz intermediate frequen-
cies. Both the 6.0 kHz and 2.4 kHz filters are selected automatically according to mode, and with the
optional 500 Hz Collins mechanical filter (Yaesu P/N YF-115C) installed and enabled via menu program-
ming, it can be selected for CW operation.
O
2nd and 3rd IF Filter Bandwidth
NOR
2nd IF
3rd IF
( 455 kHz )
ø1
ø1
2.4/6.0 kHz
ø2
ø2
2.0/2.4 kHz
ATT
6.0 kHz
2.4 kHz
M
PERATING
ANUAL
F
RONT
NAR 1
2nd IF
3rd IF
( 8.2MHz )
( 455 kHz )
2.0 ( 2.4 ) kHz
2.0 ( 2.4 ) kHz
500 Hz
500 Hz
2.4 kHz
2.4 kHz
2.0 kHz
2.0 kHz
P
C
ANEL
ONTROLS
NAR 2
2nd IF
3rd IF
( 8.2MHz )
( 455 kHz )
N/A ( 2.0 kHz )
N/A ( 2.0 kHz )
250 Hz
250 Hz
2.0 kHz
2.0 kHz
ø3
250/500 Hz
250/500 Hz
Page 29
ø3
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