Ranger RCI-6900F HP Tranciever Manual

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RCI-6900F HP / RCI-6900F TB FREQUENCY COUNTER CIRCUIT DIAGRAM 
  
						

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RCI-6900F HP / RCI-6900F TB ECHO BOARD (EB-99) CIRCUIT DIAGRAM 
 
  
						

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RCI-6900F HP 
RCI-6900F TB  
 CHAPTER 4 
ALIGNMENT 
 
 
 
4.0 REQUIRED TEST EQUIPMENT 
 
! DC Power Supply (13.8VDC, 20A) 
 RF Wattmeter (25~60 MHz, 100W)  
# Multimeter (Digital) 
$ Automatic Modulation Meter 
% Audio Signal Generator 
& Frequency Counter (100 MHz) 
 RF Signal Generator (100 MHz)   
( Automatic Distortion Meter 
) Oscilloscope (50 MHz) 
* Sinad Meter 
 
4.1 ALIGNMENT PROCEDURES 
This transceiver has been aligned at the factory and does not require any adjustments at installation. 
The required test equipment listed is used for the test setup or alignment shown in Figure 4-1 
Transmitter Test Setup and Figure 4-2 Receiver Test Setup. This test setup is used in part or total 
during the following adjustments and refer to Figure 4-3 for adjustment location. 
 
4.1.1 PLL ALIGNMENT 
 
ITEM U.U.T. SETTING  ADJUST 
POINT MEASUREMENT 
VCO Voltage 
 
 Disconnect ‘short PCB” from TP7, TP8 and 
TP9. 
Set radio to Fr. Pool 6, CH 40 AM RX mode. 
Set +10KHz/OFF switch to OFF position. 
Connect Multimeter to TP2. 
Connect Frequency Counter to TP11.  
 
 
 
L15 
VC1  
 
 
 
6.5 VDC 
± 0.1 
10.2400MHz 
± 20Hz 
    
AM Frequency  Set radio to Fr. Pool 1, CH 1 AM RX mode. 
Set radio to Fr. Pool 6, CH 40 AM RX mode. 
Connect Frequency Counter to TP3. L45 
 
L41 17.5500MHz 
± 20Hz 
 
18.9600MHz 
± 20Hz 
    
USB Frequency Set radio to Fr. Pool 1, CH 1 USB RX mode. 
Set radio to Fr. Pool 6, CH 40 USB RX mode. 
Connect Frequency Counter to TP3. L46 
L42 17.5525MHz 
± 20Hz 
18.9625MHz 
± 20Hz 
    
LSB Frequency  Set radio to Fr. Pool 1, CH 1 LSB RX mode. 
Set radio to Fr. Pool 6, CH 40 LSB RX mode. 
Connect Frequency Counter to TP3. L47 
L43 17.5475MHz 
± 20Hz 
18.9575MHz 
± 20Hz 
 
    
TX Frequency  Set radio to Fr. Pool 1, CH 1 AM TX mode. 
Connect Frequency Counter to TP3. VR8 
17.5500MHz 
± 20Hz 
 
    
AM OSC  Set radio to Fr. Pool 1, CH 1 AM TX mode. 
Connect Frequency Counter to TP5. L18 
10.6950MHz 
± 10Hz 
    
USB OSC  Set radio to Fr. Pool 1, CH 1 USB TX mode. 
Connect Frequency Counter to TP5. L19 
10.6925MHz 
± 10Hz 
    
LSB OSC  Set radio to Fr. Pool 1, CH 1 LSB TX mode. 
Connect Frequency Counter to TP5. L20 
10.6975MHz 
± 10Hz 
    
4.1.2 TRANSMITTER ALIGNMENT  
						

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ITEM U.U.T. SETTING  ADJUST 
POINT MEASUREMENT 
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. L18,L37,L35,
L34 
 
 
 
L35,L34 
 Maximum Output. 
 
 
 
 
Maximum Output 
and Balance. 
AM APC 
 Set radio to Fr. Pool 2, CH 19 AM TX mode. 
Connect Multimeter to TP8. VR15 
 6VDC 
 
SSB APC  Set radio to Fr. Pool 2, CH 19 USB TX mode. 
Connect Multimeter to TP8. VR18 12.5VDC 
 
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 (-)  
 
VR13 
VR12 + VR11
 
 
 
10 mA 
(50 mA + 50 mA) = 
100 mA 
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. VR15 
 
VR19 10W (RCI-6900FHP) 
50W (RCI-6900FTB) 
2W 
  
RF Power 
Meter Set radio to Fr. Pool 2, CH 19 AM TX mode. 
Set RF PWR Fully Clockwise. VR10 Adjust RF Power 
meter needle until it 
is in-between the 
green and red bar on 
TX PWR scale. 
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. VR14 25W (RCI-6900FHP) 
100W (RCI-6900F 
            TB) 
SSB Carrier 
Balance Set radio to Fr. Pool 2, CH 19 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 Fr. Pool 2, CH 19 CW TX mode. 
Plug in CW key. 
Disconnect the Mic Jack. 
Connect AC Voltmeter to EXT SP. VR9  200mV (Sine Wave) 
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. VR1 on 
SWR P.C.B Adjust SWR needle 
until it is on the “2” 
SWR scale.  
AM Modulation 
FM Modulation 
Set radio to Fr. Pool 2, CH 19 AM TX mode. 
Set radio to Fr. Pool 2, CH 19 FM TX mode. 
AF signal 30mV, 1 KHz to microphone. 
Set Mic Gain Fully Clockwise. VR17 90% 
4KHz 
 
Frequency 
Counter Adjust Set radio to Fr Pool 2, CH 19 AM RX mode. 
 VC1 on 
frequency 
counter  Display should be 
28.9150 
 
4.1.3 RECEIVER ALIGNMENT 
  
						

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ITEM U.U.T. SETTING  ADJUST 
POINT MEASUREMENT 
AM Sensitivity  Set radio to Fr. Pool 2, CH 19 AM RX mode. 
Set RF Gain Fully Clockwise. 
Set SQ Fully Counter Clockwise. 
Set VOL Control at 2 o’clock. 
Set NB/ANL/OFF switch to OFF position. 
Connect RF SG to antenna jack  
Frequency 28.915 MHz, 1uV. Mod 30%. 
Set radio to Fr. Pool 6, CH 40 AM RX mode. 
RF SG setting 29.655 MHz. 
Set radio to Fr. Pool 1, CH 1 AM RX mode. 
RF SG setting 28.245 MHz. 
 L2,3,5,6,7,8, 
9,10 
 
 
 
 
 
L5,L6 
 
L5,L6 
 Audio output > 2V 
S/N > 10 dB. 
 
 
 
 
 
For Balance between 
CH 1 and CH 40. 
USB Sensitivity Set radio to Fr. Pool 2, CH19 USB RX mode. 
Set VOL Control Fully Clockwise. 
RF SG setting 28.916 MHz, 0.5uV. Mod off. 
 L11,L12 
Audio Output 
> 2V 
S/N > 10dB. 
LSB Sensitivity Set radio to Fr. Pool 2, CH19 LSB RX mode. 
Set VOL Control Fully Clockwise. 
RF SG setting 28.914 MHz, 0.5uV. Mod off. 
 L11,L12 
Audio Output 
> 2V 
S/N >10db. 
FM Distortion  Set radio to Fr. Pool 2, CH 19 FM RX mode. 
Set MODE switch to FM mode. 
RF SG setting 28.915 MHz, 1mV. Mod 3KHz.
 
 L4  Audio output > 3V 
Distortion < 10% 
NB Adjust  Set radio to Fr. Pool 2, CH 19 AM RX mode 
RF SG setting 28.915 MHz, 100uV. Mod off. 
Set NB/ANL/OFF switch to NB/ANL 
position. 
Connect Voltmeter to TP1. 
 L1  DC Voltage to max. 
( > 2.0V ) 
AM Squelch  Set radio to Fr. Pool 2, CH 19 AM RX mode. 
Set SQ Control Fully Clockwise. 
RF SG setting 28.915 MHz, 1 mV. Mod 30%. 
 VR4 Slowly  Adjust  very  slowly 
until squelch just 
open 
SSB Squelch  Set radio to Fr. Pool 2, CH 19 USB RX mode. 
Set SQ Control Fully Clockwise. 
RF SG setting 28.915 MHz, 1 mV. Mod off. 
 VR3 Slowly  Adjust  very  slowly 
until squelch just 
open 
AM S/RF Meter 
AM S-Meter Set radio to Fr. Pool 2, CH 19 AM RX mode.  
Set SWR/S/RF switch to S/RF position.  
RF SG setting 28.915 MHz, 100uV. Mod 30%.
 
 VR1  Meter needle to S9 
on the S scale 
SSB S-Meter 
 
 
 Set radio to Fr. Pool 2, CH 19 USB RX mode.  
Set SWR/S/RF switch to S/RF position.  
RF SG setting 28.916 MHz, 100uV. Mod off. 
 VR2  Meter needle to S9 
on the S scale 
Figure 4-1 Transmitter test setup 
  
						

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Figure 4-2 Receiver test setup 
 
 
 
 
 
 
 
 
 
 
 
 
  
						

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Figure 4-3 Main PCB Adjustment Location 
 
 
 
 
 
 
 
 
 
 
 
RCI-6900F HP 
RCI-6900F TB  
 CHAPTER 5 
MAINTENANCE  
						

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5.0 PRECAUTIONS 
The inherent quality of the solid-state components used in this transceiver will provide many years of 
continuous use. Taking the following precautions will prevent damage to the transceiver. 
 
(i) Never key the transmitter unless an antenna or suitable dummy load is connected to the antenna 
receptacle.  
 
(ii) Ensure that the input voltage does not exceed 16 VDC or fall below 11 VDC. 
 
(iii) During alignment, do not transmit for more than 10 seconds at a time. Transmitting over long 
periods can cause heat built-up and cause transmitter damage. 
 
5.1 PERIODIC INSPECTION 
This unit is aligned at the factory to deliver maximum performance. However, continued performance 
cannot be expected without periodic inspection and maintenance. Important points to be checked 
regularly are as follows; 
 
Check Item  Action 
Whip antenna 
(option) If cracked or broken, replace it. 
Coaxial cable  If sheath is cracked, seal with 
vinyl tape. If immersed with 
water, install new coaxial cable.  
Coaxial & power 
plug connections If loosened, reconnect. If 
corroded, clean contacts. 
Battery connection  If corroded, clean power 
terminals. 
Ground terminal  If corroded, clean terminal. 
 
5.2 FUSE REPLACEMENT
  
To protect the equipment from serious damage, a fuse is provided on the power supply lines. The fuses 
protect against over voltage / reverse polarity or internal fault of the equipment. If the fuse has blown, 
first find out the cause of the trouble before replacing it. A fuse rated for more than the transceiver 
requirement should not be used, since it may permanently damage the equipment. Damage due to over 
fusing is not covered by the warranty. 
  
 
 
 
 
 
 
 
 
RCI-6900F HP  
RCI-6900F TB  
 CHAPTER 6 
DIAGRAMS & 
PARTS LIST 
 
  
						

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6.0 GENERAL 
Information on most electrical and mechanical parts is included in the parts list. The reference 
designators are in alphanumeric order. 
 
6.1 ORDERING REPLACEMENT PARTS 
Parts orders should be referred to the parts department at: 
 
• Ranger Communications, Inc. 
   3377 Carmel Mountain Road 
   San Diego, CA 92121 
 
Tel: 858-259-0287 
Fax: 858-259-0437