Level Diagram; Receiver Section - Kenwood TM-V71A Service Manual
144/430 (440) mhz fm dual bander
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Also See for TM-V71A:
- Instruction manual (60 pages) ,
- Instruction manual (107 pages) ,
- Service manual (4 pages)
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TM-V71A/V71E
Receiver Section
–123dBm
D134,135
D186,188
ANT
ANT
SW
D164,165
D187,188
ANT
SW
13
88
LEVEL DIAGRAM
Center Frequency
–121dBm
–109.5dBm
BPF
Q228
Q227
A Band VHF Receiver circuit
–121dBm
–109.5dBm
BPF
Q293
Q292
B Band VHF Receiver circuit
–121dBm
–109.5dBm
BPF
Q363
Q362
A Band UHF Receiver circuit
–121dBm
–109.5dBm
BPF
Q408
Q407
B Band UHF Receiver circuit
155mVrms 460mVrms 390mVrms
Q810
Q806
IC666
Multi
14
SW
Q811
Q807
155mVrms 460mVrms 390mVrms
45.05MHz
–105dBm
XF486
BPF
MCF
Q226
1st Local
49.95MHz
–105dBm
XF546
BPF
MCF
Q291
1st Local
–107.5dBm
BPF
Q361
1st Local
–107.5dBm
BPF
Q406
1st Local
AF (1kHz)
390mVrms
IC806
5
13
13
13
9
IC804
cross
E VR
point
6
14
16
SW
390mVrms
455kHz
AF (1kHz)
–110dBm
155mVrms
A Band
IC486
16
9
FM IC
AF
CF
Wide
CF
Narrow
450kHz
AF (1kHz)
–109dBm
155mVrms
B Band
IC546
16
9
FM IC
AF
CF
Wide
CF
Narrow
Note1: The 12dB SINAD levels
were plotted using a standard
signalgenerator through a
0.01μF ceramic capacitor at
each point from the RF to the
first IF.
Note2: The AF levels were
measured with an AF voltmeter
when the –73dBm (50μV)
standard signal generator
signal modulated by a 1kHz
modulation frequency and a
3kHz deviation was received
and the AF output was adjusted
to 0.63V/8Ω by the AF VR.
0.63Vrms
J801 (SP1)
3
8Ω
IC801
AF AMP
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