5 - 3
2nd LO
J1
1
2
1
2
P2
BFO
J2
1
2
1st LO
J4
1
2
1
2
P3
C7
C6
Reference
OSC level
adjustment
P1
Reference
frequency
check point
C16
Reference
frequency
pre-setting
P4
1st LO
output level
check point
P5
BFO
check point
C165
VCO lock voltage
adjustment
L4
Reference
freauency
adjustment
• PLL unit