NX-800 NX-800
LEVEL DIAGRAMLEVEL DIAGRAM
5.2mVrms
E1 K1
IC510
(ASIC)
MIC
–118dBm –120.5dBm –114.5dBm
0dBm W:-85.5dBm
N:-83.0dBm
W:-92.0dBm
N:-93.0dBm
0dBm
–112.5dBm –121.5dBm –118.0dBm
BPF
D212,D213
BPF
BPF
CF
RX VCO
D207~D210
ANT

4Ω

Radio Frequency 58.05MHz 450kHz Audio Frequency
SG input level for 12dB SINAD are obtained Measured by
connecting SG to each point via a 0.01µF capacitor. AF VTVM
AF level obtained when the AF output level is adjusted for 4.00V/4Ω
with the front panel AF VOL control. Measured with AF voltmeter
connected to the external speaker jack, receiving a –53dBm SSG
signal modulated at 1kHz, DEV. WIDE 3kHz (NARROW 1.5kHz).
MIC input : 3kHz DEV. (Wide), 1.5kHz DEV. (Narrow) at 1kHz MOD.
Transmitting frequency : Center frequency
RF AMP
Q210
Buff AMP
Q208
Buff AMP
Q10
Buff AMP
Q9
MCF
XF202 IF AMP
Q205
–104dBm –72.0dBm
IF AMP
Q204
–82.0dBm –82.0dBm 186mVrms
34
IC701
(RXAF SMF)
226mVrms
67
IC711
(RX SUM)
226mVrms
13 14
IC712
(EVOL)
VOL=20
96mVrms
14
IC715
(SP AMP)
67
IC709
(MIC SUM1)
4.0mVrms
61
IC706
(MIC SUM2)
48.2mVrms
K2 K3
IC510
(ASIC)
69.2mVrms
61
IC702
(MOD SMF)
W:244mVrms
N:122mVrms
W:244mVrms
N:122mVrms
W:354mVrms
N:177mVrms
W:198mVrms
N:99mVrms
W:198mVrms
N:99mVrms
21
IC709
(MOD SUM)
13
IC712
(EVOL)
DEV, BAL
67
IC5
(VCO_MOD) (TX VCO)
Q6
J701
4.00Vrms
IF AMP
IC201
CF201
CF202
CF
CF203
FM SYSTEM IC
IC202
1st MIX DBM
IC204
TX VCO
VCTCXO
19.2MHz
-2.5dBm +17.5dBm
Drive AMP
Q10
Buff AMP
Q9
Drive AMP
Q101
Drive AMP
Q102
Final AMP
IC102
30W6.5dBm
MOD
MB DC
AMP
DC
AMP
PC
MP
SW ANT Filter
D103,D106,
D216
DET
D108
ANT
Gate
bias
IC101 IC103
DET
D109
DET
D110
101100