Ranger_rciss 3900eghp Cb Tranciever_service Manual

							- 10 - 
 
4.0 REQUIRED TEST EQUIPMENT 
 
c DC Power Supply (13.8VDC, 10A) 
d RF Wattmeter (25~60 MHz, 50W)  
e Multimeter (Digital) 
f Automatic Modulation Meter 
g Audio Signal Generator 
h Frequency Counter (100 MHz) 
i RF Signal Generator (100 MHz)   
j Automatic Distortion Meter 
k Oscilloscope (50 MHz) 
l 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 are used for the test setup or alignment shown in Figure 4-1 
Transmitter Test Setup and Figure 4-2 Receiver Test Setup. These test setups are used in part or total 
during the following adjustments and refer to Page 15 for adjustment location. 
 
4.1.1 PLL ALIGNMENT 
 
ITEM U.U.T. SETTING ADJUST 
POINT MEASUREMENT 
VCO  Disconnect “short PCB” from TP7, TP8 & TP9.
Set radio to A band, CH 1 AM RX mode. 
Set COARSE/FINE control at 12 o’clock. 
Connect Multimeter to TP2(R116).  
 
 
L17  
 
 
1.6 VDC ± 0.1 
  Set radio to 25.615 MHz & 28.305MHz. 
Connect Oscilloscope to TP3(R74).  
L18  
Maximum Output and 
Balance 
    
AM Frequency  Set radio to A band, CH 1 AM RX mode. 
Connect Frequency Counter to TP3(R74).  
L19  
14.9200 MHz +
 20Hz    
USB Frequency  Set radio to A band, CH 1 USB RX mode. 
Connect Frequency Counter to TP3(R74).  
L20  
14.9225 MHz +
 20Hz    
LSB Frequency  Set radio to A band, CH 1 LSB RX mode. 
Connect Frequency Counter to TP3(R74).  
L21  
14.9175 MHz +
 20Hz    
TX Frequency  Set radio to A band, CH 1 AM TX mode. 
Connect Frequency Counter to TP3(R74).  
VR21  
14.9200 MHz +
 20Hz    
AM OSC  Set radio to A band, CH 1 AM TX mode. 
Connect Frequency Counter to TP5(D62).  
L26  
10.6950 MHz +
 10Hz    
SSB OSC  Set radio to A band, CH 1 USB TX mode. 
Set radio to A band, CH 1 LSB TX mode. 
Modulation off. 
Short TR31 (Collector & Emitter). 
Connect Frequency Counter to TP6(R102). L27 
L28 10.6925 MHz + 10Hz
10.6975 MHz +
 10Hz
    
 
4.1.2 TRANSMITTER ALIGNMENT 
 
ITEM U.U.T. SETTING ADJUST 
POINT MEASUREMENT 
BIAS Current  Set radio to A band, CH 1 USB TX mode.      
						

							- 11 -  Modulation off. 
Connect current meter to TP9(+) and TP8(-). 
Connect current meter to TP9(+) and TP7(-).  
VR11 
VR10,VR20  
20 mA 
160 mA 
     
SSB TX Power  Set radio to A band, CH 1 USB TX mode. 
Set Mic Gain Fully Clockwise. 
Set RF POWER H/M/L switch to H position. 
AF signal 30 mV, 1 KHz to microphone. 
Connect “short PCB” to TP7, TP8 & TP9. 
Connect RF Power Meter to antenna jack. L44,L42 Maximum Output 
     
  Set radio to F band, CH 40 USB TX mode.  L40,L43  Maximum Output 
     
  Set radio to 25.615 MHz & 28.305MHz.  L33  Maximum Output and 
Balance 
     
SSB ALC  Set radio to D band, CH 1 USB TX mode. 
AF signal 30 mV, 1 KHz to microphone. VR12 25W 
     
SSB Carrier 
Balance Set radio to D band, CH 1 USB TX mode. 
AF signal 30 mV, 1 KHz to microphone. 
Connect Oscilloscope to antenna jack. VR7  Spurious Emission to 
minimum 
     
AM/FM TX 
Power Set radio to D band, CH 1 AM TX mode. 
Modulation off. 
Connect RF Power Meter to antenna jack. VR13 9W 
     
RF Power 
Meter Set radio to D band, CH 1 AM TX mode. 
Set S-RF/SWR switch to S/RF position. 
Modulation off. VR8  For a needle reading 
in-between green 
and red bar on TX 
PWR scale. 
     
CW TX  Set radio to D band, CH 1 CW TX mode. 
Plug in CW Key. 
Disconnect the Mic Jack. 
Connect AC Voltmeter to EXT SP. VR16 200 mV 
     
AM Modulation 
FM Deviation Set radio to D band, CH 1 AM TX mode. 
Set radio to D band, CH 1 FM TX mode. 
Set Mic Gain Fully Clockwise. 
AF signal 30 mV, 1 KHz to microphone. VR14 
VR5 90% 
4KHz 
     
SWR Meter  Set radio to D band, CH 1 AM TX mode. 
Set S-RF/SWR switch to SWR position. 
Modulation off. 
Connect 100Ω load to antenna jack. VR1 on ANT 
PCB For a needle reading 
of 2 on SWR scale. 
     
 
4.1.3 RECEIVER ALIGNMENT 
 
ITEM U.U.T. SETTING ADJUST 
POINT MEASUREMENT  
						

							- 12 -  Set radio to D band, CH 1 AM RX mode. 
Set RF Gain Fully Clockwise. 
Set SQ Control 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 26.965 MHz, 1uV. Mod 30%. 
 L3,L4,L6, 
L7,L8,L10, 
L11,L12 Audio Output > 2V 
S/N > 10 dB 
AM Sensitivity 
Set radio to A band, CH 1 AM RX mode. 
RF SG setting 25.615 MHz. 
Set radio to F band, CH 40 AM RX mode. 
RF SG setting 28.305 MHz. 
 L7,L8 
 
L7,L8 Balance between 
25.615 MHz and 
28.305 MHz 
FM Sensitivity  Set radio to D band, CH 1 FM RX mode. 
RF SG setting 26.965 MHz, 0.5uV. Mod 
3KHz. 
 L5  S/N > 20 dB  
USB Sensitivity  Set radio to D band, CH 1 USB RX mode. 
RF SG setting 26.966 MHz, 0.25uV. Mod off. 
 L13,L14  Audio Output > 2V 
S/N > 10 dB 
LSB Sensitivity  Set radio to D band, CH 1 LSB RX mode. 
RF SG setting 26.964 MHz, 0.25uV. Mod off. 
 L13,L14  Audio Output > 2V 
S/N > 10 dB 
NB Adjust  Set radio to D band, CH 1 AM RX mode. 
Set NB-ANL/OFF switch to NB/ANL position.
RF SG setting 26.965 MHz, 100uV. Mod off. 
Connect Multimeter to TP1(D2). 
 L1,L2  DC voltage to max. 
> 2.0V 
AM Squelch  Set radio to D band, CH 1 AM RX mode. 
Set SQ Control Fully Clockwise. 
RF SG setting 26.965 MHz, 1mV. Mod 30%. 
 VR4 Slowly  Adjust very slowly 
until squelch just 
open. 
SSB Squelch  Set radio to D band, CH 1 USB RX mode. 
Set SQ Control Fully Clockwise. 
RF SG setting 26.966 MHz, 1mV. Mod off. 
 VR3 Slowly  Adjust very slowly 
until squelch just 
open. 
AM S-Meter  Set radio to D band, CH 1 AM RX mode.  
Set S-RF/SWR switch to S/RF position.  
RF SG setting 26.965 MHz, 100uV. Mod 30%.
 VR1  For a reading of 9 
on the S scale. 
SSB S-Meter  Set radio to D band, CH 1 USB RX mode.  
RF SG setting 26.966 MHz, 100uV. Mod off. 
 VR2  For a reading of 9 
on the S scale. 
 
 
 
 
 
 
  
						

							- 13 -   
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Figure 4-1 Transmitter test setup 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Figure 4-2 Receiver test setup 
 
 
SS-3900EGHP 
MAIN PCB ADJUSTMENT LOCATION
 
 
  
						

							- 14 -   
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
SS-3900EGHP  
 CHAPTER 5 
MAINTENANCE 
 
 
 
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							- 15 -  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 fuse 
protect against overvoltage / reverse polarity and 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 
overfusing is not covered by the warranty. 
  
 
 
 
 
 
 
 
 
 
 
SS-3900EGHP  CHAPTER 6 
DIAGRAMS & 
PARTS LIST 
 
 
  
						

							- 16 -  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. 
401 W. 35
Th ST., # B, 
NATIONAL CITY, CA 91950-7909 
 
Fax: (619) 426-3788 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
ROTARY SWITCH PCB (EPT360022Z) 
 
 
 
 
 
  
						

							- 17 -   
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
(Component Side) 
 
 
PART LIST: 
 
SS-3900EGHP ROTARY SW P.C.B 
 
ITEM REFERENCE NUMBER RANGER PART 
NUMBER DESCRIPTION 
1      EPT360022Z  ROTARY SW PCB 
2  R322,R323,R324  RCU141024Z 
C/F/R 1K Ω 1/4W 
3  R315  RCM144714A 
C/F/R 470 Ω 1/4W 
4  R313,R316,R317,R318,R319,
R321 RCM141024A 
C/F/R 1K Ω 1/4W 
5  R312,R314,R320  RCM141024B 
C/F/R 1K Ω 1/4W 
6    CH SW  EWRT32000S  ROTARY SW GPS-0501 
7    J304  EX07N40014  PCB CONN/S 10PIN 
8    J305  WX01070703  JUMPER WIRE 7x3x7 
9  D313,D314,D312,D315,D323
,D324,D326,X1,D316 WX01070704  JUMPER WIRE 7x4x7 
10    D325  WX01070705  JUMPER WIRE 7x5x7 
11    J303,D311  WX01070710  JUMPER WIRE 7x10x7 
12    J302  WX01070708  JUMPER WIRE 7x8x7 
 
DISPLAY PCB (EPT360032A) 
 
 
 
 
 
 
 

57

 
						

							- 18 -   
 
 
 
 
 
 
(Component Side) 
 
 
PART LIST: 
 
SS-3900EGHP DISPLAY P.C.B 
 
ITEM REFERENCE NUMBER RANGER PART 
NUMBER DESCRIPTION 
1    EPT360032A  DISPLAY PCB 
2    DISPLAY PCB   EX03N40003  LED DISPLAY (RED) 
3  D309(R/T)  EX01N40004  LED (RED/GREEN) 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
ANT PCB (EPT360042Z) 
 
 
 
 
 
 
 
  
						

							- 19 -   
 
 
 
 
 
 
 
 
 
 
 
(Component Side)  (Copper Side) 
 
PART LIST: 
 
SS-3900EGHP ANT P.C.B 
 
ITEM REFERENCE NUMBER RANGER PART 
NUMBER DESCRIPTION 
4    EPT360042Z  ANT PCB 
5  R9  RCY010004Z 
CHIP/F/R 0 Ω 0.1W 
6  R1  RCY014714Z 
CHIP/F/R 470 Ω 0.1W 
7  R3,R4  RCY011014Z 
CHIP/F/R 100 Ω 0.1W 
8  R2  RCY013314Z 
CHIP/F/R 330 Ω 0.1W 
9  R5,R11  RCY011024Z 
CHIP/F/R 1K Ω 0.1W 
10  R10,R12  RCY012224Z 
CHIP/F/R 2.2K Ω 0.1W 
11  R7  RCY011034Z 
CHIP/F/R 10K Ω 0.1W 
12  C5  RCY011534Z 
CHIP/F/R 15K Ω 0.1W 
13    C7  CK1059AB1A  CHIP/C 0.5PF 50WV 
14    C6  CK1030AB1A  CHIP/C 3PF 50WV 
15  C3,C4  CK2104AB7R 
CHIP/C 0.1µF 25WV 
16  C1,C2  CK1102AB7L 
CHIP/C 0.001µF 50WV 
17  Q1  TY2SC2712G  TR 2SC2712GR-TE85L 
18  D3  EDSS00355Y  DIODE 1SS355 
19  D1,D2  EDHM0198SY  DIODE HSM198S 
20  D4  EDMA0028TY  DIODE MA28T 
21    L1  ECRFZ10204  C.M.E. BRAND CORE BF2159576 
22  VR1  RE10300009 
S/F/R 10K Ω 
23    JP1  WX01070715  JUMPER WIRE 7x15x7 
MIC PCB (EPT360050Z)