Reciever Section - Kenwood TM-V71A Service Manual

TM-V71A/V71E
Item Condition
• Band B 5) Frequency: 145.000MHz E,M4
Frequency: 146.000MHz K
Detector: +P HOLD
LPF: 3kHz
HPF: OFF
De-emphasis: OFF
6) PTT: ON
7) Frequency: 435.000MHz E,M4
Frequency: 444.000MHz K
8) PTT: ON
21 .Protection TX Power: High
Check ANT: Short circuit and Open
• Band A 1) Frequency: 145.000MHz E,M4
Frequency: 146.000MHz K
2) PTT: ON
• Band B 3) Frequency: 435.000MHz E,M4
Frequency: 444.000MHz K
4) PTT: ON
Reciever Section (Refer to the table on pages 44 to 46 for the frequencies which will apply in the adjustment mode.)
Item Condition
1. BPF RSSI 1) Adj item: [BPF A VL] →
(Band A) [BPF A VC] → [BPF A VH]
Adjust Adjust: [
***
• 144MHz band SSG output: –100dBm (2.24µV)
SSG MOD: 1kHz
SSG DEV: 3kHz
• 200MHz band 2) Adj item: [BPF A 2L]
Adjust: [
***
SSG output: –100dBm (2.24µV)
3) Adj item: [BPF A 2C]
Adjust: [
***
SSG output: –90dBm (7.08µV)
4) Adj item: [BPF A 2H]
Adjust: [
***
SSG output: –80dBm (22.4µV)
• 430MHz band 5) Adj item: [BPF A UL]
Adjust: [
***
SSG output: –90dBm (7.08µV)
6) Adj item: [BPF A ULD] →
[BPF A UC] → [BPF A UHD]
→ [BPF A UH]
Adjust: [
***
SSG output: –100dBm (2.24µV)
52
ADJUSTMENT
Measurement
Test-
Unit
equipment
Linear Rear
detector panel
Oscilloscope
Ammeter
Measurement
Test-
Unit
equipment
SSG Rear
Oscilloscope panel
] Distortion
meter
AF V.M
Dummy
load
]
]
]
]
]
Adjustment
Terminal Unit Parts
ANT Check
Check
Adjustment
Terminal Unit Parts
ANT Front Tuning Turn the Tuning
EXT.SP panel control control until the
maximum RSSI
value will appear on
the LCD. When the
same RSSI value
remains while it
is being adjusted,
set the adjustment
value to the center
value.
For example, set the
adjustment value
to 38 for the values
listed below.
RSSI
value
54
55
55
55
55
55
54
Specifi cations / Remarks
Method
0.65~0.85kHz
12A or less
Specifi cations / Remarks
Method
Adjustment
value
35
36
37
38
39
40
41