Ranger RCI-6900F HP Tranciever Manual

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RCI-6900F HP  
RCI-6900F TB  
 TABLE OF  
CONTENTS 
 
 
 
 PAGE 
CHAPTER 1
  
SPECIFICATIONS
  
1.0  General  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  2 
1.1  Transmitter  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  2 
1.2  Receiver   . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  2 
  
CHAPTER 2    
OPERATION  
2.0  Introduction   . . . . ....

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1.0 GENERAL
  
Model  RCI-6900F HP / RCI-6900F TB 
Frequency Range  28.245 - 29.655MHz. 
Emission Modes  CW/FM/AM/SSB (A1/F3/A3/A3J) 
Frequency Control  Phase Lock Loop (PLL) synthesizer. 
Frequency Tolerance 
± 0.005 %. 
Frequency Stability 
± 0.001 %. 
Operating Temperature Range 
-30°C to +50°C. 
Microphone  Dynamic PTT, 500 Ω 
Input Voltage  13.8V DC  
Current Drain: Transmit (AM full mod.)  RCI-6900F HP < 5A; RCI-6900F TB < 15A. 
Current Drain : Receiver (Squelched) 
≤ 0.25A....

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Figure 2-1 Front Panel 
 
2.0 INTRODUCTION 
This section explains the basic operating procedures for the RANGER RCI-6900F HP / RCI-6900F TB 
mobile transceiver. 
 
2.1 CONTROL AND CONNECTIONS 
 
2.1.1 FRONT PANEL 
Refer to the above Figure 2-1 for the location of the following controls. 
 
1. ON/OFF VOLUME CONTROL    
This knob controls the volume and the power to the radio. To turn the radio on, rotate the knob 
clockwise. Turning the knob further will increase the volume of the receiver....

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7. FR. POOL SELECTOR 
This switch is used to select the frequency range of operation (1 - 6). 
 
8. MODE SWITCH 
This control allows you to select one of the following operating modes: CW/FM/AM/USB/LSB. 
 
9. FINE/COARSE CONTROL 
Allows variation of the receiver operating frequency above and below the assigned frequency. 
Although this control is intended primarily to tune in SSB signal, it may be used to optimize AM/FM 
signals as described in the operating procedure paragraphs. Coarse...

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The channel display indicates the current selected channel. 
 
2.1.2 REAR PANEL   
Figure 2-2 represents the location of the following connections: 
 
  
Figure 2-2 Rear Panel 
 
1. ANTENNA 
This jack accepts 50 ohms coaxial cable with a PL-259 type plug. 
 
2. POWER 
This connector accepts 13.8V DC power cable with built-in fuse. The power cord provided with the 
radio has a black and red wire. The black goes to negative and the red goes to positive. 
 
3. CW. KEY 
This is used for Morse Code...

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6  28.305 28.755 29.205 28.375 28.825 29.275 
7  28.315 28.765 29.215 28.385 28.835 29.285 
8  28.335 28.785 29.235 28.405 28.855 29.305 
9  28.345 28.795 29.245 28.415 28.865 29.315 
10  28.355 28.805 29.255 28.425 28.875 29.325 
11  28.365 28.815 29.265 28.435 28.885 29.335 
12  28.385 28.835 29.285 28.455 28.905 29.355 
13  28.395 28.845 29.295 28.465 28.915 29.365 
14  28.405 28.855 29.305 28.475 28.925 29.375 
15  28.415 28.865 29.315 28.485 28.935 29.385 
16  28.435 28.885 29.335 28.505...

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2. Turn VOL.
 knob clockwise to apply power to the radio. 
 
3. Set the VOL.
 to a comfortable listening level. 
 
4. Set the MODE
 switch to the desired mode.   
 
5. Listen to the background noise from the speaker. Turn the SQ
 knob slowly clockwise until the noise 
just disappears. The SQ
 is now properly adjusted. The receiver will remain quiet until a signal is 
actually received. Do not advance the control too far or some of weaker signals will not be heard. 
 
6. Set the CHANNEL...

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 4 Receive Control  
 
 
 
Figure 2-3 Your Transceiver Microphone Schematic 
 
  
Figure 2-5 Microphone plugs pins numbers viewed from rear of pin receptacle. 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
  
RCI-6900F HP  
RCI-6900F TB  
 CHAPTER 3 
CIRCUIT 
DESCRIPTION  
 
 
 
3.0 INTRODUCTION 
This section explains the technical theory of operation for the RCI-6900F HP / RCI-6900F TB mobile 
transceiver. 
 
3.1 PLL CIRCUIT 
The Phase Lock Loop (PLL) circuit is responsible for developing the receiver’s first...

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Q25, Q27, Q28, Q29 and Q61. The PLL circuit is programmed by the rotary channel switch GPS-0501. 
The GPS-0501 communicates the correct binary data information to the programmable divider inside 
of IC3. IC3 then controls the VCO (Voltage Controlled Oscillator), to oscillate on the correct 
frequency. This signal is fed either into the receiver’s first mixer (for receive operation) or the 
transmitter’s mixer (for transmit operation). 
 
3.2 RECEIVER CIRCUIT  
The incoming RF signal comes into...

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