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Ranger RCI-2950 DX and RCI-2970 DX


User Manual

RCI-2950 Block Diagram

RCI-2970 Block Diagram


Adjustment


ItemSettingAdjust PointMeasurement
PLL 2 AlignmentSet radio to AM RX mode.
RF SG setting at 24.000 MHz.
RF SG setting at 32.000MHz
Connect Multimeter to TP10

L14


1,0V DC +/- 0,1V
<4,5v DC
PLL 1 AlingnmentSet radio to AM RX mode.
RF SG setting at 24.000MHz.
RF SG setting at 32.000MHz.
Connect Multimeter to TP11.

L14


1,0V DC +/- 0,1 V
<6,5v DC
Base FrequencySet radio to AM RX mode.
Set radio to AM TX mode.
Clarifier setting in 12 o`clock.
Connect Frequency Counter to TP16
VC2
VR8



10.100MHz +/- 10Hz
10.100MHz +/- 10Hz



AM frequency checkingSet radio to AM, RX and TX mode.
Connect Frequency Counter to TP3.
38.69500MHz

USB frequency checkingSet radio to USB, RX and TX mode.
Connect Frequency Counter to TP3.
38.69750MHz


LSB frequency checkingSet radio to LSB, RX and TX mode.
Connect Frequency Counter to TP3.
38.69250MHz


AM OSCSet radio to AM TX mode. Mod. off.
Connect Frequency Counter to TP5.
L18

10.69500MHz +/- 10Hz
SSB OSCSet radio tu USB mode. Mod. off.
Set radio to LSB mode. Mod. off.
Short TP6 to ground.
Connect Frequency Counter to TP5
L19
L20



10.6975MHz +/- 10Hz
10.6925MHz +/- 10Hz



TX Pre-adjustSet radio to 28.000MHz, AM TX mode.
Modulation off.
Set radio to 28.000MHz, SSB mode.
Modulation 1kHz.
Connect Scope and Frequency Counter to TP17.
Set radio to 24.000MHz and 32.000MHz.
L18, L37, L35, L4





L35, L34
Maximum output.


Reduce Mod. signal and fine adjust to maximum output.


Maximum output and balance.
Power stage Pre-adjustSet radio to AM TX mode.
Set radio to SSB TX mode.
RF Power fully clockwise.
Connect Multimeter to TP8
VR15
VR18


6 V DC
12,5 V DC


BIAS CurrentSet radio to SSB TX mode.
Connect current meter to TP7(+) and TP9(-)
Connect current meter to TP7(+) and TP8(-)

VR13
VR11 and VR12

10mA
(50mA + 50mA) = 100mA
AM TX PowerSet radio to AM TX mode. Mod. off.
RF Power fully clockwise.
RF Power fully counter clockwise.
Connect "short PCB" to TP7 and TP9

VR15
VR19


10W (50W)
1W (8W)
24-32MHz
RF Power MeterSet radio to 28.000MHz, AM TX mode.
RF Power fully clockwise.
VR10Meter Indicator
AM ModulationSet radio to 28.000MHz, AM TX mode.
AF signal 30mV, 1kHz to microphone.
Mic. gain fully clockwise.
VR1790% Modulation
<7% Distortion
SSB TX PowerSet radio to SSB TX mode.
AF signal 30mV, 1kHz to microphone.
VR1425W (100W)
(24-32MHz)
SSB Carrier BalanceSet radio to SSB TX mode. Mod. off.
Connect Scope to Antenna Connector.
VR7Spurious Emission to minimum.
CW TXSet radio to 28.000MHz, CW mode.
Plug in CW key, disconnect Mic. jack.
AC Voltmeter
VR9200mV Sine Wave
Checking FM ModulationSet radio to FM TX mode.
AF signal 30mV, 1kHz to microphone.
Mic Gain fully clockwise.
4kHz +/- 1kHz Deviation
<7% Distortion
AM SensitivitySet radio to AM RX mode.
Clarifier setting in 12 o`clock.
RF Gain fully clockwise.
NB/ANL switch off.
VOL control at 2 o`clock.
Connect RF SSG to antenna jack.
Frequency 28.000MHz, 30% mod.
RF SSG setting 24.000MHz.
RF SSG 32.000MHz.
L5, L6, L7,
L8, L9, L10,
L2, L3





L5, L6, L7
Audio output > 2 Volt
S/N > 10dB






Balance between
24 and 32MHz
USB SensitivitySet radio to USB RX mode.
Vol control fully clockwise.
RF SSG setting 28.001MHz, 0,25uV mod.
L11, L12


Audio output > 2 Volt
S/N > 10dB
LSB SensitivitySet radio to LSB RX mode.
Vol control fully clockwise.
RF SSG setting 27.999MHz, 0,25uV mod.
L11, L12


Audio output > 2 Volt
S/N > 10dB
FM DistortionSet radio to FM RX mode.
RF SSG setting 28.000MHz,
Mod. 3kHz 1mV
Mod. 3kHz 0,5uV
L4Distortion Min. and Output Max.

S/N > 20dB
NB AdjustSet radio to AM mode.
NB/ANL switch on.
RF SSG setting 28.000MHz
Mod. 30%, 100uV
Connect multimeter to TP1
L1



> 2 Volt



AM SquelchSet radio to AM mode.
SQ control at fully clockwise.
RF SSG setting 28.000MHz.
Mod. 30%, 1mV
VR4
Slowly

Adjust very slowly until squelch just open.
SSB SquelchSet radio to USB mode.
SQ control at fully clockwise.
RF SSG setting 28.001MHz.
Mod. off.
VR3
Slowly

Adjust very slowly until squelch just open.
AM S/RF Meter.
AM S-Meter
Set radio to AM mode.
Meter switch at S/RF position.
RF SSG setting 28.000MHz.
Mod. 30%, 100uV
VR1Level meter indicate "6" on the scale position.
SSB S-Meter.Set radio to USB mode.
Meter switch at S/RF position.
RF SSG setting 28.001MHz.
Mod. off.
VR2Level meter indicate "6" on the scale position.

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