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RCI-2970DX LEVELS ARE SHOWN IN [].
ITEM
U.U.T. SETTING
ADJUST
POINT
MEASUREMENT
TX Power
Set radio to 28.000 MHz, AM TX mode.
Modulation off.
Set radio to 28.000 MHz, USB TX mode.
AF signal 30mV, 1 KHz to microphone.
Connect Oscilloscope to TP17.
Set RF PWR Fully Clockwise.
Set Clarifier Control to 12 o’clock.
Set radio to 24.890 MHz & 29.699 MHz.
L18,L37,L35,
L34
L35,L34
Maximum Output.
Maximum Output and
Balance.
AM APC
Set radio to AM TX mode.
Connect Multimeter to TP8
VR15
6 VDC
SSB APC
Set radio to USB TX mode.
Connect Multimeter to TP8
VR18
12.5 VDC
BIAS Current
Set radio to USB TX mode.
Modulation off.
Connect current meter to TP7(+) and TP9(-)
Connect current meter to TP7(+) and TP8(-)
VR13
VR12 + VR11
10 mA
(50 mA + 50 mA) =
100 mA
AM TX Power Set radio to 28.000 MHz, AM TX mode.
Modulation off.
Connect “short PCB” to TP7 and TP9.
Set RF PWR Fully Counter Clockwise.
Connect RF Power Meter to antenna jack.
VR15
VR19
10W
[50W]
1W
[8W]
RF Power Meter Set radio to 28.000 MHz, AM TX mode.
Set RF Power Fully Clockwise.
VR10
Level Meter Indicator
SSB ALC
Set radio to USB TX mode.
AF signal 30 mV, 1 KHz to microphone.
VR14
25W
[150W, PEP]
SSB Carrier
Balance
Set radio to USB TX mode.
AF signal 30 mV, 1 KHz to microphone.
Connect Oscilloscope to antenna jack.
VR7
Spurious Emission to
minimum.
CW TX
Set radio to 28.000 MHz, CW TX mode.
Plug in CW Key.
Disconnect the Mic Jack.
Connect AC Voltmeter to EXT SP.
VR9
200mV (Sine Wave)
AM Modulation
FM Modulation
Set radio to 28.000 MHz, AM TX mode.
Set radio to 28.000 MHz, FM TX mode.
AF signal 30 mV, 1 KHz to microphone.
Set Mic Gain Fully Clockwise.
VR17
90%
4 KHz
6.1.3 RECEIVER ALIGNMENT
Summary of Contents for RCI-2950 DX
Page 15: ...15...
Page 16: ...16...
Page 17: ...17 RCI 2950 DX RCI 2970 DX CPU CIRCUIT DIAGRAM...
Page 21: ...21 Figure 6 2 Receiver test setup...
Page 33: ...33...
Page 35: ...35 RCI 2950 DX RCI 2970 DX MAIN PCB REMARK SMD COMPONENT SIDE BLUE...
Page 36: ...36 RCI 2950 DX RCI 2970 DX MAIN PCB REMARK COMPONENT SIDE BLUE...
Page 37: ...37 RCI 2950 DX RCI 2970 DX MAIN PCB REMARK COPPER SIDE WHITE...