Receiver Alignment - Ranger RCI-6900F HP Manual

ITEM U.U.T. SETTING
TX Power Set radio to Fr. Pool 2, CH 19 AM TX mode.
Modulation Off.
Set radio to Fr. Pool 2, CH 19 USB TX mode.
AF signal 30mV, 1 KHz to microphone.
Connect Oscilloscope to TP12.
Set RF PWR Fully Clockwise.
Set FINE/COARSE Control to 12 o'clock.
AM APC Set radio to Fr. Pool 2, CH 19 AM TX mode.
Connect Multimeter to TP8.
SSB APC Set radio to Fr. Pool 2, CH 19 USB TX mode.
Connect Multimeter to TP8.
BIAS Current Set radio to Fr. Pool 2, CH 19 USB TX mode.
Modulation Off.
Connect current meter to TP7(+) and TP9 (-)
Connect current meter to TP7 (+) and TP8 (-)
AM TX Power Set radio to Fr. Pool 2, CH 19 AM TX mode.
Connect 'short PCB" to TP7, TP8 and TP9.
Set RF PWR Fully Counter Clockwise.
Connect RF Power Meter to antenna jack.
RF Power Set radio to Fr. Pool 2, CH 19 AM TX mode.
Meter Set RF PWR Fully Clockwise.
SSB ALC Set radio to Fr. Pool 2, CH 19 USB TX mode.
AF signal 30mV, 1 KHz to microphone.
Set RF PWR Fully Clockwise.
SSB Carrier Set radio to Fr. Pool 2, CH 19 USB TX mode.
Balance AF signal 30mV, 1 KHz to microphone.
Connect Oscilloscope to antenna jack.
CW TX Set radio to Fr. Pool 2, CH 19 CW TX mode.
Plug in CW key.
Disconnect the Mic Jack.
Connect AC Voltmeter to EXT SP.
SWR Meter Set radio to Fr. Pool 2, CH 19 AM TX mode.
Set SWR/S/RF switch to SWR position.
Connect 100 Ohm to antenna jack.
AM Modulation Set radio to Fr. Pool 2, CH 19 AM TX mode.
FM Modulation Set radio to Fr. Pool 2, CH 19 FM TX mode.
AF signal 30mV, 1 KHz to microphone.
Set Mic Gain Fully Clockwise.
Frequency Set radio to Fr Pool 2, CH 19 AM RX mode.
Counter Adjust

4.1.3 RECEIVER ALIGNMENT

ADJUST
POINT
L18,L37,L35,
L34
L35,L34
VR15
VR18
VR13
VR12 + VR11
VR15
VR19
VR10
VR14
VR7
VR9
VR1 on
SWR P.C.B
VR17
VC1 on
frequency
counter
- 15 -
MEASUREMENT
Maximum Output.
Maximum Output
and Balance.
6VDC
12.5VDC
10 mA
(50 mA + 50 mA) =
100 mA
10W (RCI-6900FHP)
50W (RCI-6900FTB)
2W
Adjust RF Power
meter needle until it
is in-between the
green and red bar on
TX PWR scale.
25W (RCI-6900FHP)
100W (RCI-6900F
TB)
Spurious Emission to
minimum.
200mV (Sine Wave)
Adjust SWR needle
until it is on the "2"
SWR scale.
90%
4KHz
Display should be
28.9150