TK-90
117
LEVEL DIAGRAM /
Transmitter Section /
Q610
IC605
IC602
(1/2)
MIC
XF252
XF101
LO1
TX BPF
DRV
75.5mVp-p
13.5mVp-p
21mVp-p 167.5mVp-p 320mVp-p
1.2Vp-p
62mVp-p
46.5mVp-p
118.5mVp-p 18.5mVp-p
410mVp-p
12mVp-p
200mVp-p
210.5mVp-p
91mVp-p
88.5mVp-p
43.5mVp-p
45mVp-p
45mVp-p
640mVp-p
AF
10.695MHz
73.095MHz
TX-RX unit
13.1MHz
10.695MHz
TX-RX unit
TX LPF
DRV
Q1
Q2
L1
L2
Q3
ANT
Final unit
Q255
IC251
Q253
Q186
D183
Q182
Q3
IC602
(2/2)
IC101
Display
unit
13.1MHz
310mVp-p 3.2Vp-p
170Vp-p
160Vp-p
160Vp-p
1.7Vp-p
4.1Vp-p
Q4
Q5
19.5Vp-p
L5
L8
K1
50
Ω
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Measuring equipment
Oscilloscope
Audio generator (AG)
Measuring condition
TX frequency: 13.1MHz
Power: High
Microphone input: 7mV (TX power: 60W)
Mode: USB
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