Level Diagram - Kenwood TK-8102H Service Manual

Receiver Section
Center Frequency
W –121.0dBm
W –119.0dBm W –105.5dBm
N –120.5dBm N –118.5dBm N –105.5dBm
Q26
D
G2
ANT
BPF
G1 S
Transmitter Section
Display Unit
W/N
X54-334
5.0mVrms
W/N W/N W/N
0.10Vrms 1.55Vrms 1.36Vrms
MIC
IC21 IC21
2 1 6 7 3
To make measurements in the AF section, connect the AC level meter.
AG is set so that MIC input becomes 3kHz/1.5kHz (Wide/Narrow) DEV at 1kHz MOD.
TK-8102H
49.95MHz
W –85.0dBm
N –85.5dBm
W –106.0dBm W –117.5dBm W –103.0dBm
N –105.0dBm N –117.0dBm N –101.5dBm
Q21
XF1
Q19
D
G2
BPF
G1 S
To make measurements in the RF section, connect the RF level meter.
In the RF section, use a 0.01uF coupling capacitor.
(The display shows the SSG input value required to obtain 12dB SINAD.)
TX-RX Unit
W/N W/N W 0.25Vrms W 1.4mVrms
1.47Vrms 0.47Vrms N 0.12Vrms N 0.5mVrms
IC22 IC22 IC4 IC4
1 5 7 2 1 9 8
TK-8102H

LEVEL DIAGRAM

450kHz
W –93.0dBm
N –91.0dBm
W/N
CF1
0.34Vrms
/CF2
IC5 IC10
20 11 9 8
To make measurements in the AF section, connect the AC level meter.
(ANT input : –53dBm, 1kHz FM, 3kHz DEV (Wide)/1.5kHz DEV (Narrow))
The AF output level is adjusted for a 0.45V/4ohm by the front panel AF VOL control.
TX-RX Unit (VCO)
–5dBm 0dBm
IC3
Q11 Q15 Q20
9 10
To make measurements in the RF section,
connect the RF Wattmeter (50 ohm).
33
Audio Frequency
W/N W/N W/N W/N
0.33Vrms 0.27Vrms 0.31Vrms 0.33Vrms
IC10 IC10 IC10
Q24
12 14 3 1 5 7
TX-RX Unit
7dBm 14dBm 15dBm 17dBm
D19
Q800
Q39 Q23
D
G S G
W/N W/N W/N
10mVrms 0.55Vrms 0.45Vrms
IC3 IC16
12 11 10 1 J1
FINAL Amp TX-RX Unit
45W
Q801 Q101
D803
D D D804
ANT
S G S
34