Kenwood TKR-750 Service Manual page 44

TKR-750
ATTEN 20dB
RL 10.0dBm 10dB/
1.5MHz 1.5MHz
MODULE
D
NOT FOUND
G
CENTER
RBW 300kHz * VBW 300kHz
Fig. 1
Adjustment Points
CN8 GND
(BLACK)
CN7 BACKUP
(ORANGE)
CN18
CN15
46
ADJUSTMENT
ATTEN 10dB
MKR –13.50dBm
RL –32.0dBm
MKR
3dB Max.
25.00kHz
D
–42.17dB
G
CENTER 44.85000MHz
SPAN 50.00MHz
RBW 300Hz
SWP 50ms
CN6 MAIN DC
(RED)
CN5
L2 L5
L3
L16
L19
CN4
NARROW
L24
WIDE
L18
L17
TX-RX UNIT (X57-626) (A/2)
Component side view
MKR –42.17dB
10dB/ 25.00kHz
3dB Max.
5.5~7.5kHz 5.5~7.5kHz
More than
40dB
15kHz
SPAN 50.00kHz
* VBW 1.0kHz SWP 2.0sec
Fig. 2
FINAL UNIT (X45-362) (A/2)
Component side view
Q5
VR1
CN1
TX IN
TP102
TX CV
L6 L7
CN1
L15
CN2
CN3
L14
TP101
RX CV
ATTEN 10dB
RL –32.0dBm 10dB/
More than More than
3dB Max. 3.75kHz 3.75kHz
MKR
15.00kHz
D
–46.000dB
G
CENTER 44.85000MHz
RBW 300Hz * VBW 1.0kHz
Fig. 3
CN3
CN16
CN19
TC350 (VCO A)
A2 : TX VCO (X58-479)
TC351 (VCO B)
TC350 (VCO A)
A3 : RX VCO (X58-478)
TC351 (VCO B)
MKR –46.000dB
15.00kHz
More than
40dB
15kHz
SPAN 50.00kHz
SWP 2.0sec
CN2
RX