A
1
2
3
4
5
B
C
D
E
F
G
(No.RA018<Rev.002>) 2-6
2-6 (No.RA018<Rev.002>)
RF (Center Frequency)
1st IF (49.95MHz)
AF (1kHz)
D350
ANT
D351
D370
C352 D371 C372
C541 Q530 R540
C511 Q500 C558 XF670 C676 Q670 C670 Q660 C660
IC702
IC902
C926
IC904
SSI
Internal Speaker
RFAMP
MCF
IFAMP
IFAMP
IC600
C927
RX PLL
C932
IC905
External Speaker
To make measurements in the AF section, connect the AC level meter.
(ANT input: –53dBm, 1kHz FM, 3kHz DEV (Wide). SP output: 500mW@8ohm Load)
C933
In the RF section, use 1000pF coupling capacitor.
(The display shows the SSG input value required to obtain 12dB SINAD.)
AF
AF (1kHz)
(1kHz)
RF (Center Frequency)
INTM_M
IC906
IC902
IC702
IC902
Internal MIC(Main)
ANT
INTM_S
Q160
L186
Internal MIC(Sub)
R194
Q180
C183
L185
C304
IC300
C313
Q310
C322
Q320
C331
Q330
C347
C352
SSI
SSI
EMC
External MIC(Main)
SMIC
To PLLIC
External MIC(Sub)
LPF
ANT
BPF
BPF BPF
IFIC
CODEC
f1:-121.5dBm
f1: -122.0dBm
-113.5dBm
-121.5dBm
-112.0dBm
-105.5dBm
-113.5dBm
238mVp-p
CODEC
CODEC
VCO
Coupler
Drive
Final
LPF
12.5mVrms
177.5mVrms
-13.5dBm
+4.2dBm
10.2dBm
25.8dBm
37.9dBm
6W
LEVEL DIAGRAM
Pre-
Driver1
Pre-
Driver2
Receiver section
Transmitter section
f1:F2,F3,K2,K3 (Center frequency : 155MHz)
f2:E,E2 (Center frequency : 155MHz)
f2: -118.0dBm
f2:-117.5dBm
f1:-118.0dBm
f2:-117.0dBm
SW
ANT
SW
12.0mVrms