Level Diagram; 电平图 - Kenwood NX-800 Service Manual

NX-800
Receiver Section / 接收部分
Radio Frequency / 射频频率
–118dBm –120.5dBm
ANT
D212,D213
BPF
Buff AMP
Q9
RX VCO
Transmitter Section / 发射部分
5.2mVrms
4.0mVrms
MIC
(MIC SUM1)
6
MIC input : 3kHz DEV. (Wide), 1.5kHz DEV. (Narrow) at 1kHz MOD.
Transmitting frequency : Center frequency
麦克风输入：3kHz DEV. (宽)，1.5kHz DEV. (窄) (1kHz MOD时)
发射频率：中心频率
W : Wide / 宽
N : Narrow / 窄
148

LEVEL DIAGRAM /

–114.5dBm
RF AMP 1st MIX DBM
D207~D210
Q210
BPF
Buff AMP Buff AMP
Q10 Q208
LPF
0dBm
48.2mVrms
(MIC SUM2)
7 6 1
IC709 IC706
电平图
58.05MHz
–121.5dBm
–112.5dBm –118.0dBm
IF AMP
XF202
IC204 Q205
MCF
0dBm
SSG input level for 12dB SINAD are obtained Measured by
connecting SSG to each point via a 0.01μF capacitor.
获得12dB SINAD的SSG输入电平。
将SSG连接到通过0.01μF电容器的每个点后测得。
W: 244mVrms
N: 122mVrms
69.2mVrms
(ASIC)
K2 K3 6
IC510
–104dBm
IF AMP FM SYSTEM IC
Q204 IC202
CF
CF201
CF202
W: –85.5dBm W: –92.0dBm
N: –83.0dBm N: –93.0dBm
W: 244mVrms
N: 122mVrms
(MOD SMF) (MOD SUM)
1 2
IC702 IC709
450kHz
–72.0dBm
CF203
CF
1