TK-280
TK-280
TK-280
TK-280
71
72
KNB-16A/17A (Ni-Cd BATTERY) / KPG-36 (PROGRAMMING INTER-
FACE CABLE) / KSC-19 (CHARGER) / KRA-14 (HELICAL ANTENNA)
KNB-16A
External View
KNB-17A
External View
KNB-16A
Circuit Diagram
KNB-17A
Circuit Diagram
KPG-36 External View
KSC-19 External View
KNB-16A Specifications
KNB-17A Specifications
KSC-19 Charging
Voltage ......................................... 7.2V (1.2V x 6)
Charging current .......................... 1100mAh
Dimensions (mm) ......................... 58 W x 110.8 H x 17.2 D
(Projections included)
Charger and charging time
KSC-19 (Normal Charger) ...... Approx. 8 hours
KSC-20 (Rapid Charger) ........ Approx. 1 hour
Weight .......................................... 180g
Voltage ......................................... 7.2V (1.2V x 6)
Charging current .......................... 1500mAh
Dimensions (mm) ......................... 58.0 W x 110.8 H x 20.0 D
(Projections included)
Charger and charging time
KSC-19 (Normal Charger) ...... Approx. 8 hours
KSC-20 (Rapid Charger) ........ Approx. 1.3 hour
Weight .......................................... 220g
KNB-16A
Voltage .................................... 7.2V
Battery capacity ...................... 1100mAh
Charging time .......................... Approx. 8 hours
KNB-17A
Voltage .................................... 7.2V
Battery capacity ...................... 1500mAh
Charging time .......................... Approx. 8 hours
LEVEL DIAGRAM
FM IF
SYSTEM
C251
IC18
Q24
–120.8dBm
–123.9dBm
–129.4dBm
–107.8dBm
–108.8dBm
–106.7dBm
–113.0dBm
–107.1dBm
283mV
rms
269mV
rms
XF1
C112
Q12
C95
IC4
AF0
5
4
3
41
IC13
IC8
DAC
500mW
(BTL)
SP
IC300
209mV
rms
489mV
rms
151mV
rms
22.7mV
rms
IC8
DAC
12
13
ALC
COMP
SW
IDC
6
98
19
18
15
16
C101
6.86mV
rms
12.4mV
rms
33.2mV
rms
302mV
rms
291mV
rms
282mV
rms
429mV
rms
138mV
rms
MIC
IC13
IC7
Q20
+15.7dBm
C192
L22
C210
RF (CENTER FREQUENCY)
IF1 (44.85MHz)
IF2 (455kHz)
AF (1kHz)
IC7
C54
C98
C343
A1
VCO
C157
PLL
Q18
C183
C193
-3.7dBm
AF (1kHz)
RF (CENTER FREQUENCY)
RXLO
D23
D9
+7.3dBm
C194
Power Module
5.0W
L18
RF (CENTER FREQUENCY)
AF (1kHz)
IC8
DAC
RX
TX
BLOCK DIAGRAM
T
T
Discharge pin side
Charge pin side
Thermister
Diode
Breaker
(80
±
5˚C)
Broaker
(70
±
5˚C)
Discharge pin side
Charge pin side
Thermister
Diode
Breaker
(80
±
5˚C)
Broaker
(70
±
5˚C)
T
o
mak
e measurements in the AF section, con-
nect the A
C
le
v
el meter
. (ANT input :
-53dBm,
1kHz FM, 3kHz DEV(WIDE).)
In the RF section, use a 1000pF coupling ca-
pacitor
. (The displa
y sho
ws the SSG input v
alue
required to obtain 12dB SINAD.)
A
G
is set to the MIC input becomes 3kHz DEV
.
at 1kHz MOD (WIDE).
T
o
mak
e measurements in the AF section, con-
nect the A
C
le
v
el meter
.
In the RF section, use a 1000pF coupling ca-
pacitor
.
69
70
KRA-14 External View