Kenwood NX-900 Service Manual page 101

450kHz
–81.5dBm
–82.0dBm –68.0dBm
IF AMP IF AMP
3
IC201 IC704
E1
W5k: 260mVrms
W4k: 208mVrms
N: 130mVrms
(EVOL)
DEV, BAL
22 24
IC719
8.0dBm
AMP AMP
Q10 Q420
LEVEL DIAGRAM
180mVrms 218mVrms
(ASIC) (RXAF SMF)
K1 3 4
IC510 IC701
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 5k 3kHz, Wide 4k 2.4kHz, Narrow 1.5kHz).
W5k: 250mVrms W5k: 250mVrms
W4k: 200mVrms W4k: 200mVrms
N: 125mVrms N: 125mVrms
(VCO_MOD)
6 7
IC5
0.0dBm
Drive AMP
Wilkinson
/
BPF
Coupler
Audio Frequency
218mVrms
(EVOL)
(RX SUM) VOL=20
6 7 10
IC711 IC719
(TX VCO)
Q6
10.0dBm 17.0dBm
Final
Drive AMP Module
Q150 Q151 IC102
Gate
bias
APC
DC
AMP
MP
IC103
NX-900
88mVrms
(SP AMP)
11 1 4
IC715 J701
High Power: 15.0W
Low Power: 5.0W
D103
D920,D921
D925,D926
SW ANT Filter
D108 D109
DET DET
4.00Vrms
ANT
101