- 21 -
Set radio to 24.890 MHz and 29.699 MHz.
L35,L34
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(+) andTP8(-).
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
[ 2W]
RF Power
Meter
Set radio to 28.0000 MHz, AM TX mode.
Set RF Power Fully Clockwise.
VR10 Meter
Indicator
SSB ALC
Set radio to USB TX mode.
AF signal 30mV, 1 KHz to microphone.
VR14
25W
[100W]
SSB Carrier
Balance
Set radio to USB TX mode.
AF signal 30mV, 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 30mV, 1 KHz to microphone.
Set Mic Gain Fully Clockwise.
VR17 90%
4KHz
6.1.3 RECEIVER ALIGNMENT
ITEM SETTINGS
ADJUST
POINT
MEASUREMENT
AM Sensitivity Set radio to 28.000 MHz, AM RX mode.
Set Clarifier Control to 12 o’clock.
Set RF Gain Fully Clockwise.
Set SQ Fully Counter Clockwise.
Set NB/ANL/OFF switch to OFF position.
Set VOL Control at 2 o’clock.
Connect RF SG to antenna jack.
Frequency 28.000 MHz, 1uV. Mod 30%.
Set radio to 24.890 MHz, AM RX mode.
L5,6,7,8,9,10,
2,3
L5,L6, L7
Audio Output > 2V
S/N > 10 dB
Balance between
Summary of Contents for RCI-2985DX
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