ranger_rci6900f_hp_tb_instr_man_pdf.pdf

RCI-6900F HP

RCI-6900F TB

TABLE OF

CONTENTS

PAGE

SPECIFICATIONS

1.0

General . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2

1.1

Transmitter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2

1.2

Receiver . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2

CHAPTER 2

OPERATION

Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3

2.1

Control & Connections . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3

2.1.1

Front Panel . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3

2.1.2

Rear Panel . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5

2.1.3

Frequency Chart . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6

2.2

Microphone . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7

2.3

Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7

2.3.1

Procedure To Receive . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7

2.3.2

Procedure To Transmit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. . 7

2.4

Alternate Microphones And Installation . . . . . . . . . . . . . . . . . . . . . . . . 8

CHAPTER 3

CIRCUIT DESCRIPTION

Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9

3.1

PLL Circuit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9

3.2

Receiver Circuit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9

3.3

Transmitter Modulation Circuit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9

3.4

Transmitter Amplifier Circuit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9

CHAPTER 4

4.0

Required Test Equipment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14

4.1.1

Alignment Procedures . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14

4.1.2

Transmitter Alignment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15

4.1.3

Receiver Alignment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16

CHAPTER 5

MAINTENANCE

5.0

Precautions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19

5.2

Fuse Replacement . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19

CHAPTER 6

DIAGRAMS AND PART LIST

6.0

PCB Layout & Part List . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. 20

RCI-6900F HP

RCI-6900F TB

CHAPTER 1

SPECIFICATIONS

- 1 -

CHAPTER 1

2.0

3.0

ALIGNMENT

4.1

PLL Alignment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14

5.1

Periodic Inspection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19

1.0 GENERAL

Model

RCI-6900F HP / RCI-6900F TB

Frequency Range

28.245 - 29.655MHz.

Frequency Control

Phase Lock Loop (PLL) synthesizer.

Frequency Tolerance

0.005 %.

Frequency Stability

0.001 %.

Operating Temperature Range

-30

C to +50

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.

(Max. audio output)

< 0.5A.

Antenna Connector

UHF, SO239.

Dimensions : (RCI-6900F HP)

7 7/8”(W) x 10 3/4” (D) x 2 3/8”(H)

: (RCI-6900F TB)

7 7/8” (W) x 9 1/4” (D) x 3 7/8” (H)

Weight

5 lb. (RCI-6900F HP), 7lb 6 oz (RCI-6900F TB)

1.1 TRANSMITTER

AM/FM/CW ; SSB RF Power Output (RCI-6900FHP)

AM/FM/CW ; SSB RF Power Output (RCI-6900FTB)

10W ; 25W PEP

50W ; 100W PEP

RF Transmit Modes

CW/FM/AM/SSB.

Spurious Emissions

High and low level Class B, Amplitude Modulation.

Carrier Suppression

-35 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 ; CW/SSB)

< 0.5

V ; < 0.25

Sensitivity For 20dB S/N (FM)

< 0.5

IF Frequency

AM: 10.695 MHz 1st IF, 455 KHz 2nd IF.

Image Rejection

> 50 dB.

Adjacent Channel Selectivity

> -55 dB (AM/FM) ; > -60 dB (CW/SSB)

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

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-6900F HP

RCI-6900F TB

CHAPTER 2

OPERATION

- 2 -

Emission Modes

CW/FM/AM/SSB (A1/F3/A3/A3J)

Modulation

-50 dB.

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.

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 of your radio, gently turn the

switch fully counterclockwise, and then turn clockwise until the background noise is just eliminated.

Further clockwise rotation will increase the threshold level and only strong signals will be heard.

3. MIC GAIN CONTROL

Adjusts the microphone gain in the transmit mode. This control adjusts the gain to the extent that full

talk power is available several inches away from the microphone.

4. RF GAIN CONTROL

This control is used to reduce the gain of the RF amplifier under strong signal conditions.

5. 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.

6. RF POWER CONTROL

This control allows the user to adjust RF power output.

- 3 -

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 operates both TX/RX, Fine operate

in RX only.

10. CHANNEL SELECTOR

This control is used to select a desired transmit and receive channel.

11. FRONT PANEL METER

The Front Panel Meter allows the user to monitor signal strength, RF output power and SWR level.

12. 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.

13. FREQUENCY COUNTER

This display indicates the frequency of operations.

14. ECHO/OFF SWITCH

This control is used for echo effect.

15. HI/LO SWITCH

This switch changes tone quality in receive only. In LO position, bass is increased and in HI position,

treble is increased.

16. 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.

17. 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.

18. 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.

19. +10KHz/OFF SWITCH

When the switch is pressed the frequency is shifted 10KHz up.

20. CHANNEL DISPLAY

- 4 -

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 operation. To operate this mode, connect a CW key to this jack, and place

the MODE switch in the CW position.

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)

28.245

28.695

29.145

28.315

28.765

29.215

28.255

28.705

29.155

28.325

28.775

29.225

28.265

28.715

29.165

28.335

28.785

29.235

28.285

28.735

29.185

28.355

28.805

29.255

28.295

28.745

29.195

28.365

28.815

29.265

- 5 -

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