Pll Alignment Locations - Ranger RCI-2950 Service Manual

SETTINGS
VCO & OSC:
Frequency: 28.0000 MHz
MIC Gain: Fully counter-clockwise
RF Power. Fully clockwise
RF Gain: Fully clockwise
Clarifier: 12 o'clock
Vol : Comfortable level
Squelch: Fully counter-clockwise
Mode selector - AM
AM TX OSC:
Same as above
USB TX OSC:
Adjust VR7 fully clockwise.
Put mode selector on USB.
LSB TX OSC:
Put mode selector in LSB.
After adjustment return VR7 to
approximate middle of rotation.
Ranger RCI-2950

PLL Alignment Locations

CONNECTION
Remove TP1, TP2, TP3 Jumper PCB.
Disconnect shorting board from test points TP1,
TP2 and TP3
Connect Freq. Counter to L61
Connect Oscilloscope to L61
Connect a Freq. Counter to L65
Connect a Freq. Counter to L65
Connect Voltmeter to IC7 Pin3
Connect Voltmeter to J13
Connect Oscilloscope to L65
Connect Freq. Counter to
IC13 pin8
Connect Oscilloscope to
IC17 pin13
Connect a frequency counter to cathode of D45
Leave frequency counter connected to D45
Leave frequency counter connected to D45
Replace TP1, TP2, TP3 Jumper PCB.
PLL Alignment
ADJUST
VC1
L4
VC2
VR21
L21
L17
L19
L23
L24
L25
L27
L29
L28
ADJUST FOR
Adjust for reading of
10.240MHz ± 10Hz.
Adjust for Max.
Adjust for 17.305MHz ±10Hz.
Key Transmitter and adjust for
17.305MHz ±10Hz.
Adjust for
1.2VDC ±.1VDC.
Adjust for
2.0VDC ±.1VDC.
Adjust for Max.
Very carefully adjust for
11.350MHz ±10Hz.
Very carefully adjust and for best waveform
Key transmitter and adjust for
10.6950 MHz ±10Hz.
Key transmitter and adjust for
10.6925 MHz ±10Hz.
Key transmitter and adjust for
10.6975 MHz ±10Hz.