RangerRCI6300F HP 10m Tranciever Service Manual
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Ranger Communications Inc.
RCI-6300F HP
RCI-6300F TB
10 Meter Amateur Radio
Ranger
Service Manual
- 1 -
RCI-6300F HP
RCI-6300F 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 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
2.1 Control & Connections . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
2.1.1 Front Panel . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
2.1.2 Rear Panel . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
2.1.3 Frequency Chart . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
2.2 Microphone . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
2.3 Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
2.3.1 Procedure To Receive . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
2.3.2 Procedure To Transmit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
2.4 Alternate Microphones And Installation . . . . . . . . . . . . . . . . . . . . . . . . 9
CHAPTER 3
CIRCUIT DESCRIPTION
3.0 Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
3.1 PLL Circuit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
3.2 Receiver Circuit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
3.3 Transmitter Modulation Circuit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
3.4 Transmitter Amplifier Circuit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
CHAPTER 4
ALIGNMENT
4.0 Required Test Equipment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
4.1 Alignment Procedures . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
4.1.1 PLL Alignment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
4.1.2 Transmitter Alignment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
4.1.3 Receiver Alignment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
CHAPTER 5
MAINTENANCE
5.0 Precautions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20
5.1 Periodic Inspection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20
5.2 Fuse Replacement . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20
CHAPTER 6
DIAGRAMS AND PART LIST
6.0 PCB Layout & Part List . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21
- 2 -
RCI-6300F HP
RCI-6300F TB
CHAPTER 1
SPECIFICATIONS
1.0 GENERAL
Model RCI-6300F HP / RCI-6300F TB
Frequency Range 28.245 - 29.655MHz.
Emission Modes AM/FM (A3/F3)
Frequency Control Phase Lock Loop (PLL) synthesizer.
Frequency Tolerance
± 0.005 %.
Frequency Stability
± 0.001 %.
Operating Temperature Range
-20°C to +50°C.
Microphone
Dynamic PTT, 500 Ω
Input Voltage
13.8V DC nominal ±15%.
Current Drain: Transmit (AM full mod.) RCI-6300F HP < 5A; RCI-6300F TB < 15A.
Current Drain: Receiver (Squelched)
≤ 0.25A.
(Max. audio output) < 0.5A.
Antenna Connector UHF, SO239.
Dimensions (RCI-6300F HP) 2-3/8”(H) x 7-7/8”(W) x 10-3/4”(D).
Dimensions (RCI-6300F TB) 3-7/8”(H) x 7-7/8”(W) x 9-1/4”(D).
Weight 5 lb. (RCI-6300F HP) ; 7lb 6oz (RCI-6300F TB)
1.1 TRANSMITTER
RF Power Output (AM/FM)
(DC Carrier Power) 10 W (RCI-6300F HP)
50W (RCI-6300F TB)
RF Transmit Modes AM/FM.
AM Modulation High and low level Class B, Amplitude Modulation.
Spurious Emissions -50 dB.
Audio Frequency Response 300 to 2500 Hz
Antenna Impedance 50 Ohms.
Output Indicators Meter shows relative RF output power, receive signal
and SWR. Transmit LED glows red when transmitter
is in operation.
1.2 RECEIVER
Sensitivity For 10dB S/N (AM)
< 0.5 µV.
Sensitivity For 12dB S/N (FM)
< 0.25 µV.
IF Frequency AM: 10.695 MHz 1st IF, 455 KHz 2nd IF.
Image Rejection > 50 dB.
Adjacent Channel Selectivity > -55 dB.
RF Gain Control 45 dB adjustable for optimum signal reception.
Automatic Gain Control (AGC) Figure Of Merit 100 mV for 10 dB Change in Audio Output.
Squelch
Adjustable; threshold less than 0.5 µV.
Noise Blanker RF type.
Audio Output Power 2.5W @ 10% THD.
Audio Frequency Response 300 to 2500 Hz.
Built-in Speaker 8 Ohms, 4 Watts.
External Speaker (Not Supplied) 8 Ohms; 4 Watts.
(SPECIFICATIONS SUBJECT TO CHANGE WITHOUT NOTICE)
RCI-6300F HP CHAPTER 2
- 3 - RCI-6300F TB OPERATION Figure 2-1 Front Panel 2.0 INTRODUCTION This section explains the basic operating procedures for the RANGER RCI-6300F HP / RCI-6300F 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. 2. SQUELCH CONTROL This switch is used to eliminate background noise being heard through the receiver which can be disturbing when no transmissions are being received. To use this feature, turn the switch fully counterclockwise and then turn clockwise slowly until the background noise is just eliminated. Further clockwise rotation will increase the threshold level which a signal must overcome in order to be heard. Only strong signals will be heard at a maximum clockwise setting. 3. MIC GAIN CONTROL
- 4 - Adjusts the microphone gain in the transmit and PA modes. This controls the gain to the extent that full talk power is available several inches away from the microphone. In the Public Address (PA) mode, the control functions as the volume control. 4. RF GAIN CONTROL This control is used to reduce the gain of the RF amplifier under strong signal conditions. 5. MODE SWITCH This control allows you to select one of the following operating modes: PA/FM/AM. In the PA position, the radio acts as a public address amplifier. Your voice will come out of the speaker that is plugged into the PA. SP. jack on the rear panel. The radio does not operate when you are in the PA mode. In the FM/AM position, the PA function is disabled and the unit will transmit and receive on the speaker that is connected to the radio. 6. FR. POOL SELECTOR This switch is used to select the frequency range of operation (1 - 6). 7. ECHO SWITCH This control is used for echo effect. 8. TIME CONTROL This time control is used to control the intervals of the echo sound. 9. TALKBACK CONTROL Adjust this knob for desired volume of Talkback. This is used to monitor your own voice. For example, you could use this feature to compare different microphones. 10. RF POWER CONTROL This control allows the user to adjust RF power output. 11. CHANNEL SELECTOR This control is used to select a desired transmit and receive channel. 12. FRONT PANEL METER The Front Panel Meter allows the user to monitor signal strength, RF output power and SWR level. 13. TX/RX LED The red LED indicates the unit is in the transmit mode. The green LED indicates the unit is in the receive mode. 14. FREQUENCY COUNTER This display indicates the frequency of operation. 15. DIM/BRT SWITCH This switch controls the level of brightness for the meter lamp, frequency display and the channel display. Press this switch (DIM) for the meter lamp, frequency display and the channel display to be dimly lighted. Depress this switch (BRT) for brighter effects. 16. HI/LO SWITCH This switch selects received audio tone quality. In LO position, bass is increased and in HI position, treble is increased.
- 5 - 17. S-RF/SWR SWITCH This is a two-function switch. In the S-RF position, the meter will indicate the strength of the signal being received, as well as the relative RF output of transmission. To use the meter to measure the standing wave ratio, turn the switch to the SWR position. The SWR function is self-calibrating. 18. NB/ANL/OFF SWITCH In the NB/ANL position, the RF Noise Blanker and the Automatic Noise Limiter in the audio circuits are also activated. The Noise Blanker is very effective in eliminating repetitive impulse noise such as ignition interference. 19. R.B./OFF SWITCH In the Roger Beep position, the radio transmits an audio tone at the end of your transmission to indicate that transmission has ended. As a courtesy to others, use the Roger Beep only when necessary. 20. +10KHz/OFF SWITCH When the switch is pressed the frequency is shifted 10KHz up. 21. CHANNEL DISPLAY The channel display indicates the current selected channel. 2.1.2 REAR PANEL Figure 2-2 represents the location of the following connections:
- 6 - 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. PA. SP. This jack is for PA operation. Before operating, you must first connect a PA speaker (8 ohms, 4W) to this jack. 4. EXT. SP. This jack accepts 4 to 8 ohms, 4 watts external speaker. When the external speaker is connected to this jack, the built-in speaker will be disabled. 2.1.3 FREQUENCY CHART FR. POOL CHANNEL 1 (MHz) 2 (MHz) 3 (MHz) 4 (MHz) 5 (MHz) 6 (MHz)
- 7 - 1 28.245 28.695 29.145 28.315 28.765 29.215 2 28.255 28.705 29.155 28.325 28.775 29.225 3 28.265 28.715 29.165 28.335 28.785 29.235 4 28.285 28.735 29.185 28.355 28.805 29.255 5 28.295 28.745 29.195 28.365 28.815 29.265 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 28.955 29.405 17 28.445 28.895 29.345 28.515 28.965 29.415 18 28.455 28.905 29.355 28.525 28.975 29.425 19 28.465 28.915 29.365 28.535 28.985 29.435 20 28.485 28.935 29.385 28.555 29.005 29.445 21 28.495 28.945 29.395 28.565 29.015 29.465 22 28.505 28.955 29.405 28.575 29.025 29.475 23 28.535 28.985 29.435 28.605 29.005 29.505 24 28.515 28.965 29.415 28.585 29.035 29.485 25 28.525 28.975 29.425 28.595 29.045 29.495 26 28.545 28.995 29.445 28.615 29.065 29.495 27 28.555 29.005 29.455 28.625 29.075 29.515 28 28.565 29.015 29.465 28.635 29.085 29.525 29 28.575 29.025 29.475 28.645 29.095 29.535 30 28.585 29.035 29.485 28.655 29.105 29.545 31 28.595 29.045 29.495 28.665 29.115 29.555 32 28.605 29.055 29.505 28.675 29.125 29.565 33 28.615 29.065 29.515 28.685 29.135 29.575 34 28.625 29.075 29.525 28.695 29.145 29.585 35 28.635 29.085 29.535 28.705 29.155 29.595 36 28.645 29.095 29.545 28.715 29.165 29.605 37 28.655 29.105 29.555 28.725 29.175 29.625 38 28.665 29.115 29.565 28.735 29.185 29.635 39 28.675 29.125 29.575 28.745 29.195 29.645 40 28.685 29.135 29.585 28.755 29.205 29.655 2.2 MICROPHONE The receiver and transmitter are controlled by the push-to-talk switch on the microphone. Press the switch and the transmitter is activated, release switch to receive. When transmitting, hold the microphone two inches from the mouth and speak clearly in a normal voice. The radio comes complete with low impedance (500 ohm) dynamic microphone.
- 8 - 2.3 OPERATION 2.3.1 PROCEDURE TO RECEIVE 1. Be sure that power source, microphone and antenna are connected to the proper connectors before going to the next step. 2. Turn unit on by turning VOL knob clockwise on transceiver. 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 selector switch to the desired channel. 7. Set the RF GAIN control fully clockwise for maximum RF gain. 2.3.2 PROCEDURE TO TRANSMIT 1. Select the desired channel of transmission 2. Set the MIC GAIN control fully clockwise. 3. If the channel is clear, press the push-to-talk switch on the microphone and speak in a normal voice. 2.4 ALTERNATE MICROPHONES AND INSTALLATION For best results, the user should select a low impedance dynamic type microphone or a transistorized microphone. Transistorized type microphones have a low output impedance characteristic. The microphones must be provided with a four-lead cable. The audio conductor and its shielded lead comprise two of the leads. The third lead is for transmit control and the fourth is for receiving control. The microphone should provide the functions shown in schematic below (Figure 2-3).
- 9 - 4 WIRE MIC CABLE Pin Number Mic Cable Lead 1 Audio Shield 2 Audio Lead 3 Transmit Control 4 Receive Control Figure 2-3 Your Transceiver Microphone Schematic Figure 2-4 Microphone plug pin numbers viewed from rear of pin receptacle. RCI-6300F HP RCI-6300F TB CHAPTER 3 CIRCUIT DESCRIPTION 3.0 INTRODUCTION This section explains the technical theory of operation for the RCI-6300F HP / RCI-6300F TB mobile transceiver.