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5 - 6
Minimum distortion
level
12 dB SINAD
At the point where
the audio signals
just appears.
1 • Operating frequency:
470.000 MHz
A
469.550 MHz
B
467.725 MHz
C
446.09375 MHz
D
• Channel spacing
:Narrow
• Connect a standard signal generator to
the antenna connector*
1
and set as:
Frequency
: 470.000 MHz
A
469.550 MHz
B
467.725 MHz
C
446.09375 MHz
D
Level
: 10 µV* (–87 dBm)
Modulation
: OFF
Deviation
: ±1.75 kHz
• Receiving
• Operating frequency:
455.000 MHz
A
466.050 MHz
B
465.138 MHz
C
446.09375 MHz
D
• Channel spacing
: Narrow
• Connect a standard signal generator to
the antenna connector*
1
and set as:
Frequency
: 455.000 MHz
A
466.050 MHz
B
465.138 MHz
C
446.09375 MHz
D
Level
: 0.2 µV* (–121 dBm)
Modulation
: 1 kHz
Deviation
: ±1.75 kHz
• Receiving
• Receiving
RX
SENSITIVITY
[BPF T1]–[BPF T4]
SQUELCH
LEVEL
[SQL]
Top
panel
Top
panel
Connect a SINAD meter with an
8
Ω
load to the [SP] jack.
Connect a SINAD meter with an
8
Ω
load to the [SP] jack.
ADJUSTMENT
ADJUSTMENT CONDITION
MEASUREMENT
VALUE
UNIT
LOCATION
*The output level of the standard signal generator (SSG) is indicated as the SSG’s open circuit.
SOFTWARE ADJUSTMENT – continued
Select an operation using [
↑
] / [
↓
] keys, then set specified value using [
←
] / [
→
] keys on the connected computer keyboard.
CONVENIENT:
The BPF T1–BPF T4 can be adjusted automatically.
q
-1: Set the cursol to “BPF ALL” on the adjustment program and then push [ENTER]
key.
q
-2: The connected PC tunes BPF T1–BPF T4 to peak levels.
or
w
-1: Set the cursol to one of BPF T1, T2, T3, or T4 as desired.
w
-2: Push [ENTER] key to start tuning.
w
-3: Repeat
w
-1 and
w
-2 to perform additional BPF tuning.
1
2
A
: [F21], [F21S], [F22] and [F22S],
B
: [F21BR],
C
: [F21GM],
D
: [F22SR]
*
1
In case of IC-F22SR, instead of the antenna connector, connect to the J7 as shown page 5-3.
Summary of Contents for IC-F11
Page 1: ...SERVICE MANUAL VHF TRANSCEIVERS...
Page 28: ...9 5 9 2 SW A AND SW B UNITS TOP VIEW SW A UNIT F1 Q1 DS1 B5603C SW B UNIT F1 Q1 DS1...
Page 37: ......
Page 38: ...1 1 32 Kamiminami Hirano ku Osaka 547 0003 Japan S 13806IZ C1V 2001 Icom Inc...
Page 39: ...SERVICE MANUAL UHF TRANSCEIVERS...
Page 68: ...9 5 9 3 SW A AND SW B UNITS TOP VIEW SW A UNIT F1 Q1 DS1 B5603C SW B UNIT F1 Q1 DS1...
Page 77: ......
Page 78: ...1 1 32 Kamiminami Hirano ku Osaka 547 0003 Japan S 13806IZ C1U 2001 Icom Inc...