![Kenwood TS-2000 Service Manual Download Page 16](http://html.mh-extra.com/html/kenwood/ts-2000/ts-2000_service-manual_1955640016.webp)
16
TS-2000/X
1.2GHz Unit Receiver Section
The incoming signal from the antenna (12ANT) passes
through a filter, is amplified in the receiver RF amplifier (Q11
and 12) and input to the first mixer (Q10).
The signal is converted to the first IF (135.495MHz) in
Q10, passes through the MCF (XF1) and the AGC amplifier
(Q9) and enters the second mixer (Q7 and Q8).
The signal is converted to the second IF (10.695MHz) in
Q7 and Q8, amplified in the receiver IF amplifier (Q303) and
sent to the TX-RX1 unit (X57-605).
D5
D6,7,303
TX
TX/RX SW
Q12
Q11
L33
L30
1240~
1300MHz
1st Mixer
Q10
2nd Mixer
Q7,8
XF1
135.495
MHz
Q9
Q303
AGC
CN12
CN11
D11
1104~
1165MHz
124.800
MHz
Q15
TX-RX 3 (X57-607)
D8
10.695
MHz
D47
12RIF
X57-605
12ANT
Ref No.
XF1
XF2
XF3
CF1
CF2
Parts No.
L71-0566-05
L71-0565-05
L71-0582-05
L72-0984-05
L72-0986-05
Nominal center frequency
41.895MHz
58.525MHz
41.795MHz
455kHz
455kHz
Pass bandwidth
3dB :
±
7.5kHz
3dB :
±
7.5kHz
3dB :
±
15kHz
6dB :
±
7.5kHz or more 6dB :
±
4.5kHz or more
50dB :
±
15kHz or less
50dB :
±
10kHz or less
Ripple
1.0dB or less
1.0dB or less
1.0dB or less
2.0dB or less
2.0dB or less
Insertion loss
3.0dB or less
3.5dB or less
1.5dB or less
6.0dB or less
6.0dB or less
Guaranteed attenuation
Fo+(500~1000)kHz
Fo
±
1MHz
Fo–(500~1000)kHz
Fo
±
100kHz
Fo
±
100kHz
Fo–(200~1000)kHz
80dB or more
50dB or more
35dB or more
35dB or more
70dB or more
Cener
–
–
–
455kHz
±
1.0kHz
455kHz
±
1.0kHz
Terminating impedance
960
Ω
//1.0pF
350
Ω
//4.0pF
960
Ω
//1.0pF
1.5k
Ω
2.0k
Ω
CC=7.0pF
CC=15.5pF
Spurious
Fo
±
1.0MHz
Fo
±
1.0MHz
–
–
–
40dB or more
40dB or more
CF2 : Only E destination
Table 15
Filters rating (TX-RX 2 unit : X57-606)
Fig. 9
CIRCUIT DESCRIPTION
Summary of Contents for TS-2000
Page 132: ...TS 2000 X TS 2000 X 134 WIRING ...
Page 142: ...1 2 B A D F C E G I H J 3 5 7 9 4 6 8 10 12 14 11 13 TS 2000 X CIRCUIT DIAGRAM 165 ...
Page 144: ...1 2 B A D F C E G I H J 3 5 7 9 4 6 8 10 12 14 11 13 TS 2000 X CIRCUIT DIAGRAM 169 ...
Page 167: ...234 TS 2000 X MC 52DM MULTI FUNCTION MICROPHONE WITH DTMF Schamatic Diagram ...