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NX-220
Receiver Section
–119.5dBm
–120.0dBm
R133
186.2mVrms
ASIC
C605
IC610
To make measurements in the AF section, connect the AC level meter. (ANT input: –53dB, 1kHz FM, 3kHz DEV (Wide))
In the RF section, use a 1000pF coupling capacitor.
(The display shows the SSG input value required to obtain 12dB SINAD without local level.)
Transmitter Section
12.5mVrms
(at MIC terminal)
C71
IC2
VCO
C477
C475
PLL
AG is set to the MIC input becomes (3kHz/1.5kHz) at 1kHz MOD (Wide/Narrow).
To make measurements in the AF section, connect the AC level meter.
In the RF section, use a 1000pF coupling capacitor.
86
LEVEL DIAGRAM
RF (Center Frequency)
–111.0dBm
LNA
C246
C216
Q202
AF (1kHz)
186.2mVrms
226.2mVrms
DAC
SUM
SMF
C30
IC904
IC2
42.6mVrms
23.5mVrms
C35
–0.2dBm
C482
D413
C106
Q408
D412
RXLO
IF1 (49.95MHz)
–120.5dBm
MCF
Mixer
C353
Q201
XF1
68.0mVrms
43.9mVrms
Audio Amp
C903
IC901
IC4
AF (1kHz)
168.9mVrms(W)
168.9mVrms(W)
84.5mVrms(N)
84.5mVrms(N)
IC603
DSP
ASIC
C443
IC610
IC6
RF (Center Frequency)
–5.9dBm
9.7dBm
C114
Q102
Q103
–107.0dBm
–71.0dBm
IF Amp
FM IC
C338
C335
IC302
Q303
400mW
VCO
10.1dBm
31.5dBm
C120
C149
Q104
IF2 (450kHz)
CF
ASIC
CF2
IC610
5.0W
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