61
TK-190
LEVEL DIAGRAM
Receiver Section
Transmitter Section
FM IF
SYSTEM
C200
L201
L202
L205
L206
IC200
Q200
–118.5dBm
–118.0dBm
–113.0dBm
–96.0dBm
–98.0dBm
–110.0dBm
–114.5dBm
–107.5dBm
262mV
rms
155mV
rms
ANT
XF300
C304
Q302
C308
IC601 (2/2)
*
5
4
3
41
IC607
I5
O5
IC603
DAC
AF
AMP
500mW
(BTL)
SP
IC1
IC604 (2/2)
*
120mV
rms
185mV
rms
83mV
rms
770mV
rms
205mV
rms
I4
O4
IC603
DAC
*
EMC
12
LPF
13
ALC
COMP
SW
IDC
6
98
19
18
15
16
C661
17.5mV
rms
17.5mV
rms
16.0mV
rms
38.0mV
rms
330mV
rms
320mV
rms
310mV
rms
460mV
rms
210mV
rms
MIC
(MAIN)
IC3
NC AMP
IC607
IC605 (1/2)
*
VCO
L800
PLL
PLL
8
5
–9.5dBm
–1.2dBm
–7.7dBm
Q105
Q32
Q102
Q106
D102
Q1
RX Lo
–18.0dBm
–6.2dBm
+9.5dBm
–23.5dBm
+20.5dBm
C6
ANT
6.0W
Power amp.
RF
*
RF1
RF2
RF
*
AF
AF
AF
IF (128.55MHz)
IF2
(455kHz)
Q2
To make measurements in the AF section, con-
nect the AC level meter. (ANT input : –53dBm,
1kHz FM, 3kHz DEV.)
In the RF section, use a 10000pF coupling ca-
pacitor. (The display shows the SSG input value
required to obtain 12dB SINAD.)
AG is set to the MIC input becomes 3kHz DEV.
at 1kHz MOD.
To make measurements in the AF section, con-
nect the AC level meter.
In the RF section, use a 10000pF coupling ca-
pacitor.
RF
*
33.5MHz
..........
K
42.6MHz
..........
K2
RF1
129.005MHz
R
F
2
162.505MHz
....
K
171.605MHz
....
K2