Kenwood TS-440S Serivce Manual page 8

TS-440S
CIRCUIT DESCRIPTIO N
Filter selective
AUTO MODE
WITHOUT OPTION
OPTION INSTALLE D
MODE 8 .83MHz 455kHz
8 .83MHz 455kH z
SSB Through CFI XF1 CF 1
CW
Through CF1 XF2 CF 1
AM
Through CF2 Through CF 2
FSK Through CFI XF2 CF I
FM Through — Through —
XF1: YK-88S or YK-88S N
XF2: YK-88C or YK-88C N
Table 2
Item Ratin g
Center frequency fo 45 .05 MH z
Center frequency deviation
fo± 1 kHz at 3 d B
Pass bandwidth
±9 .6 kHz or more at 3 d B
Attenuation bandwidth
±28 kHz or less at 10 d B
Ripple
0 .7 dB or les s
Insertion loss 2 .0 dB or les s
Guaranteed attenuation
30 dB or more with ±1 MH z
(Except spurious )
Final impedance 2 kS1±10 %IL characteristi c
Table 4 MCF (L71-0259-05) (RF UNIT Fl )
Item Ratin g
Center frequency fo 8830 kHz±0 .5 kH z
Pass bandwidth ±3 kHz or more at 3 d B
Attenuation bandwidth ±12 kHz or less at 18 d B
Guaranteed attenuation 30 dB or more within fo± 1
MH z
Ripple 0 .5 dB or les s
Insertion loss 1 .0 dB or les s
Final impedance 2 .5 kfll3 pF
Table 6 MCF (L72-0260-05) (RF unit F2 )
Item Ratin g
Center frequency fo 455 kHz±0 .2 kHz at 6 d B
6 dB bandwidth (total)
± 1 .1 -1 .3 kH z
60 dB bandwidth
4 .5 kHz or les s
Guaranteed attenuation 60 dB or mor e
(at 0 .1 -1 MI-Iz )
Spurious (600—700 kHz)
40 dB or mor e
Ripple with bandwidth 2 dB or less at 60 d B
Insertion loss 2 dB or les s
Temperature — 10°C— +50° C
Input and output impedance 2
al
Table 8 Ceramic filter (L72-0356-05) (IF UNIT CF1)
MANUAL MODE
WITHOUT OPTION OPTION INSTALLE D
SELECT 8 .83MHz 455kHz 8 .83MHz 455kH z
N NO RX
XF2 CF 1
XF1
CF 1
M 1
M2
Through
CFI Through
CF 1
W Through
CF2
Through
CF2
XF1: YK-88S or YK-88S N
XF2: YK-88C or YK-88C N
Table 3
Item Rating
Center frequency fo 455 kH z
6 dB bandwidth ±2 kHz or mor e
40 dB bandwidth 7 .5 kHz or les s
Insertion loss 6 dB or les s
Guaranteed attenuatio n
(within 455kHz ±
100kHz)
35 dB or more
Input and output impedance 2 .0
al
Table 5 Ceramic filter (L72-0355-05) (IF UNIT CF2 )
Item
Ratin g
Center frequency fo
455 kHz±1 'kH z
6 dB bandwidth
±6 kHz or mor e
50 dB bandwidth ±12 .5 kHz or les s
Rippl e
(within 455 kHz±4 kHz)
3 dB or les s
Insertion loss 6 dB or les s
Guaranteed attenuatio n
(within 455 kHz± 100kHz)
35 dB or more
Input and output impedance 2 .0 kS l
Table 7 Ceramic filter (L72-0315-05) (IF unit CF3 )
Item Rating
Center frequency fo 8 830 MH z
Attenuation bandwidth
±50 kHz or more at 3 d B
Guaranteed attenuation 35 dB or more at 9 285 MH z
45 dB or more at 9 .74 MH z
Insertion loss 6 dB or les s
Ripple 1 .0 dB or les s
Input and output impedance 330 Sl
Max voltage (DC) 50 V (Min l
Table 9 Ceramic filter (L72-0351-05) (IF unit CF4 )
8