Icom IC-F11, Service Manual

Page: 17 / 78

5 - 6
Minimum distortion
level
12 dB SINAD
At the point where
the audio signals
just appears.
1 • Operating frequency:
146.000 MHz*
1
151.505 MHz*
2
• Channel spacing :Narrow
• Connect a standard signal generator to
the antenna connector and set as:
Frequency : 146.000 MHz*
1
151.505 MHz* 2
Level : 10 µV* (–87 dBm)
Modulation : OFF
Deviation : ±1.75 kHz
• Receiving
• Operating frequency:
160.000 MHz*
1
156.956 MHz*
2
• Channel spacing : Wide
• Connect a standard signal generator to
the antenna connector and set as:
Frequency : 160.000 MHz*
1
156.956 MHz* 2
Level : 0.2 µV* (–121 dBm)
Modulation : 1 kHz
Deviation : ±3.5 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
*
1
IC-F11, F11S, F12 and F12S. *
2
IC-F11BR only.