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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. 

                                        (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. 

Modulation  

High and low level Class B, Amplitude Modulation. 

Spurious Emissions 

-50 dB. 

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 

µ

V ; < 0.25 

µ

V. 

Sensitivity For 20dB S/N (FM) 

< 0.5 

µ

V.  

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 

µ

V. 

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 

 

 

Summary of Contents for RCI-6900F HP

Page 1: ... Microphones And Installation 8 CHAPTER 3 CIRCUIT DESCRIPTION 3 0 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 ALIGNMENT 4 0 Required Test Equipment 14 4 1 Alignment Procedures 14 4 1 1 PLL Alignment 14 4 1 2 Transmitter Alignment 15 4 1 3 Receiver Alignment 16 CHAPTER 5 MAINTENANCE 5 0 Precautions 19 5 1...

Page 2: ...n High and low level Class B Amplitude Modulation Spurious Emissions 50 dB 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 µV 0 25 µV Sensitivity For 20dB S N FM 0 5 µV I...

Page 3: ...s 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 pow...

Page 4: ... 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 ...

Page 5: ...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 1 28 245...

Page 6: ... 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 2...

Page 7: ...ze AM FM signals 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 depress 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 Transisto...

Page 8: ...B 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 local oscillator signal and the transmitter s exciter signal The PLL circuit consists primarily of IC2 IC3 IC4 IC5 ...

Page 9: ...of operation The signal is then detected by either the AM detector or product detector or then fed to the audio amplifier section of the receiver and finally out to the speaker 3 3 TRANSMITTER MODULATION CIRCUIT i The transmitter modulation circuit modulates the low level RF signal from the PLL exciter circuit with the user s audio voice signal from the microphone The audio from the microphone is ...

Page 10: ... 10 ...

Page 11: ... 11 ...

Page 12: ... 12 RCI 6900F HP RCI 6900F TB FREQUENCY COUNTER CIRCUIT DIAGRAM ...

Page 13: ... 13 RCI 6900F HP RCI 6900F TB ECHO BOARD EB 99 CIRCUIT DIAGRAM ...

Page 14: ...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 Co...

Page 15: ...r 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 m...

Page 16: ...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...

Page 17: ... 17 Figure 4 2 Receiver test setup ...

Page 18: ... 18 Figure 4 3 Main PCB Adjustment Location RCI 6900F HP RCI 6900F TB CHAPTER 5 MAINTENANCE ...

Page 19: ...enance 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 c...

Page 20: ...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 ...

Page 21: ...B 2 R315 RCP168214Z 820 OHM 1 16W 3 R312 R313 R314 R316 R324 RCP161524Z 1 5K OHM 1 16W 4 J303 J304 J305 J306 WX01070705 JUMPER WIRE 5 J308 WX01070708 JUMPER WIRE 6 J301 J302 D311 D312 D301 D314 D315 D316 D323 D324 D325 D326 WX01070710 JUMPER WIRE 7 J307 EX07N48209 PCB CONN S 10PIN 8 ROTARY SW EWRT32000S ROTARY SW REMARK COPPER SIDE BLUE ...

Page 22: ...012224Z 2 2K OHM 0 1W 8 R12 RCY014724Z 4 7K OHM 0 1W 9 R7 RCY011034Z 10K OHM 0 1W 10 C5 RCY012234Z 22K OHM 0 1W 11 C7 CK1059AB1A 0 5PF 50WV 12 C6 CK1030AB1A 3PF 50WV 13 C3 C4 CK2104AB7R 0 1uF 25WV 14 C1 C2 CK1103AB7L 0 001uF 50WV 15 Q1 TY2SC2712G TR 2SC2712GR 16 D3 EDSS00355Y DIODE 1SS355 17 D1 D2 EDHM0198SY DIODE HSM198S 18 D4 EDMA0028TY DIODE MA28T 19 L1 ECRFZ10053 RF COIL C3RH0610 20 VR1 RE1030...

Page 23: ...UMBER DESCRIPTION 1 EPA010010B POWER PCB 2 R18 R19 RCM141004A 10 Ω W 3 R16 RCM141014A 100 Ω W 4 R22 RCM144714A 470 Ω 1 4W 5 R21 RCM141024A 1K Ω 1 4W 6 R15 RCP121034Z 10K Ω 1 2W 7 R14 RFP102714Z 270 Ω 1W 8 C5 C6 CC0500201A 2PF 50WV ITEM REFERENCE NUMBER RANGER PART DESCRIPTION ...

Page 24: ...V 20 C30 CE0254777Z 470PF 25WV 21 Q2 TDTC0114ES TR DTC114ES 22 D4 D7 D8 D9 ED1N04148Z DIODE 1N4148 23 D10 EDLT6A400Z DIODE LT6A400 24 L4 L5 ECSPG18382 SPRING COIL 25 L2 ECBAD18571 BEAD COIL 26 L3 ECBAD18572 BEAD COIL 27 L1 ECCHK16142 CHOKE COIL 28 TDK BRAND CORE ECRFZ10053 TDK BRAND CORE 29 T1 ECRFZ10184 RF COIL 30 T2 ECRFZ10185 RF COIL 31 RL1 EX05N40844 RELAY 32 J1 EX07N41226 PCB CONN S 2PIN 33 J...

Page 25: ...011014Z 100 Ω 0 1W 4 R1 R3 R4 RCY014714Z 470 Ω 0 1W 5 R5 R11 RCY011024Z 1K Ω 0 1W 6 R12 RCY014724Z 4 7K Ω 0 1W 7 R7 R8 R10 RCY011034Z 10K Ω 0 1W 8 C1 C2 CK1102AB7L 0 001uF 50WV 9 C3 C4 CK2104AB7R 0 1uF 25WV 10 D1 D2 EDHM0198SY DIODE HSM198S 11 D4 EDMA0028TY DIODE MA28T 12 VR1 RE103Y0125 10KB 3L 13 Q1 TY2SC2712G 2SC2712GR TE85L REMARK COPPER SIDE BLUE ...

Page 26: ...PIN 5 J4 J12 EX07W48827 PCB CONN S 6PIN RCI 6900FTB 6 J8 EX07N48224 PCB CONN S 7PIN 7 J10 EX07N48331 PCB CONN S 6PIN RCI 6900FTB 8 JP3 JP7 WX01070705 JUMPER WIRE RCI 6900FHP 9 JP1 WX01070710 JUMPER WIRE 10 VOL SQ RV50303522 VR 50KB 50KA W SW 11 FINE COARSE RV20303523 VR 20KB 1KB 12 MIC RF RV10203524 VR 1KB 1KA 13 SWR CAL RV20303560 VR 20KB 5KB 14 BAND EWRT32094S ROTARY SW 6N 15 MODE EWRT32083S ROT...

Page 27: ...GER PART NUMBER DESCRIPTION 1 EPT690050Z MIC P C B 2 C502 C503 C504 CC0501027L 0 001uF 50WV 3 C505 C506 C501 CC0501037L 0 01uF 50WV 4 L501 ECCHK16001 CHOKE COIL 5 L502 ECBAD18526 BEAD COIL 6 1 4 EX06N41020 MIC JACK 7 MIC 50F EX07N48903 WIRE CONN H 3PIN REMARK COPPER SIDE BLUE ...

Page 28: ... 28 ...

Page 29: ... C21 C29 C31 C32 C33 C35 C36 C28 CK2104AB7R 0 1uF 25WV 15 C5 7 16 20 22 25 38 40 CK1103AB6U 0 01UF 50WV 16 C13 CK1102AB7L 0 001uF 50WV 17 C9 C18 C27 C30 C34 CK5105AA7R 1uF 16WV 18 U3 YNRG0GX3SP IC LC7232N 18PIN 19 U2 YNTA04073B IC TC4093BFN 14PIN 20 U4 U5 U6 YNR006250F IC BA6250F 16PIN 21 U1 YNT011650U IC TK11650U 3PIN 22 Q3 TY25C2714Z TR 2SC2714 23 Q1 Q2 TY2SC2712G TR 2SC2712GR 24 D2 D3 EDSS00355...

Page 30: ... 6 EX03N40476 LED DISPLAY 4 TX RX EX01N40004 LED RED GREEN 5 ON NB ANL R B S RF SWR 10K EWPS33033X PUSH SW 6 LED DISPLAY PCB x 2pc EX07N48928 PCB CONN S 12PIN 7 TOJ10 10K S RF M M EX07N48223 PCB CONN S 2PIN 8 LED DISPLAY PCB x 3pc EX07N48350 PCB CONN S 3PIN 9 LED DISPLAY PCB EX07N48490 PCB CONN S 4PIN 10 RX G TX EX07N48947 PCB CONN S 3PIN REMARK TOP COMPONENT SIDE BLUE BOTTOM COPPER SIDE BLUE ...

Page 31: ... 31 ...

Page 32: ...3AB7R 0 01uF 25WV 16 C2 C3 C10 C16 C28 C29 C30 C32 C33 C36 C37 C38 C39 C40 C18 C35 CK2104AB7R 0 1uF 25WV 17 C6 C31 C20 C22 CK5105AB7R 1uF 16WV 18 C13 CK1152AB7R 0 0015uF 50WV 19 C19 CK1472AB6U 0 0047uF 50WV 20 C25 CK5105ZZ7R 1uF 16WV 21 C1 CK5225AA7R 2 2uF 16WV 22 IC1 YNJR04558M IC NJM4558M 8PIN 23 IC2 YNES56033S IC ES56033S 16PIN 24 Q1 Q3 TY2SC2712G TR 2SC2712GR 25 D1 D2 D4 D5 D6 EDSS00355Y DIODE...

Page 33: ... 33 RCI 6900 HP RCI 6900 TB MAIN PCB REMARK COMPONENT SIDE BLUE ...

Page 34: ... 34 RCI 6900F HP RCI 6900F TB MAIN PCB REMARK SMD COMPONENT SIDE BLUE ...

Page 35: ... 35 RCI 6900 HP RCI 6900 TB MAIN PCB REMARK COPPER SIDE WHITE PART LIST RCI 6900F HP MAIN PCB ...

Page 36: ...9 31 3 EX07N48350 P C S 3P J2 9 EX07N48490 P C S 4P J6 EX07N48222 P C S 5P J10 13 15 EX07N48331 P C S 6P J28 EX07N48543 P C S 9P J26 EX07N48209 P C S 10P J30 EX07N48244 P C S 3P J27 EX07N48884 P C S 6P J27 30 EX07N48151 P C S SHORT PIN TP1 2 3 5 11 12 EX07N48612 P C S 1 PIN J5 EX07N49140 P C S 2P TP7 9 XZZZ90006Z PCB STOPPER L30 36 WX01070710 JUMPER WIRE L503 WX0012015A TUBE L504 WH0007005Z LEAD W...

Page 37: ... 116 126 127 139 148 153 158 159 175 176 177 196 197 201 207 226 232 234 235 238 240 250 251 254 255 268 281 292 297 298 303 324 325 340 341 342 346 350 CK1103AB6U 0 01UF 50WV C7 31 36 47 55 58 93 104 133 135 145 150 CK1102AB7L 0 001UF 50WV 178 181 190 191 192 204 259 265 322 121 349 C5 23 26 41 56 74 77 78 80 81 94 101 106 109 119 125 157 162 170 199 258 262 272 274 277 283 284 296 CK1473AB7R 0 0...

Page 38: ... JS013016WH SET SCREW W3x16 1 FRONT PANEL 4 JS033008MN SET SCREW M3x0 5Px8 TONE 2 CH9 2 WB ANL 2 JS052004MN SET SCREW M2x0 4Px4 SWR SW 2 JS052605MN SET SCREW M2 6x0 45x5 CH BRT 2 CHASSIS 12 JS053006MN SET SCREW M3x0 5Px6 SPK 4 DC SOCKET 2 JS053008MN SET SCREW M3x0 5Px8 MAIN PCB 5 JS053006TN SET SCREW T3x6 2 SPK 4 JN263035ZS NUT WITH WASHER M3x3 5t EX06T41019 ANT SOCKET EX06T40007 DC SOCKET MT36000...

Page 39: ... C S 3P J17 EX07N41330 P C S 2P J1 11 20 21 19 32 35 EX07N48223 P C S 2P J7 29 31 3 EX07N48350 P C S 3P J2 9 EX07N48490 P C S 4P J6 EX07N48222 P C S 5P J10 13 15 EX07N48331 P C S 6P J28 EX07N48543 P C S 9P J26 EX07N48209 P C S 10P J30 EX07N48244 P C S 3P J27 EX07N48884 P C S 6P J27 30 EX07N48151 SHORT PIN TP1 2 3 5 11 12 EX07N48612 P C S 1P J5 EX07N49140 P C S 2P TP7 9 XZZZ90006Z PCB STOPPER L30 3...

Page 40: ...2104AB7R 0 1UF 25WV C2 3 6 9 15 21 22 25 33 34 37 59 65 67 70 71 73 76 82 87 92 105 115 116 126 127 139 148 153 158 159 175 176 177 196 197 CK1103AB6U 0 01UF 50WV 201 207 226 232 234 235 238 240 250 251 254 255 268 281 292 297 298 303 324 325 340 341 342 346 350 C7 31 36 47 55 58 93 104 133 135 145 150 178 181 190 191 192 204 259 265 322 349 121 CK1102AB7L 0 001UF 50WV C5 23 26 41 56 74 77 78 80 8...

Page 41: ...021Z FOAM 11x30x15t XZZZ90064Z INSULATING PLATE 13x18x0 15 BA0112010P MIC PLATE COUNTER XZZZ90363Z PVC STAND OFF COUNTER JS013016WH SET SCREW W3x16 1 FRONT PANEL 4 JS033008MN SET SCREW M3x0 5Px8 CH BKT 2 CHASSIS 14 JS053006MN SET SCREW M3x0 5Px6 SPK 4 JS053008MN SET SCREW M3x0 5Px8 MAIN PCB 5 JS053006TN SET SCREW T3x6 2 SPK 4 JN263035ZS NUT WITH WASHER M3x3 5t EX06N41163 DC SOCKET EX06N41036 TERMI...

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