- 1 - rci-2950 dx rci-2970 dx table of contents chapter 1 page specifications 1.0 general . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2 1.1 transmitter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2 1.2 ...
- 2 - rci-2950 dx rci-2970 dx chapter 1 specifications 1.0 general model rci-2950 dx / rci-2970 dx frequency range 12 meter : 24.8900 ~ 24.9900 mhz 10 meter : 28.0000 ~ 29.6900 mhz tuning steps 100 hz, 1 khz, 10 khz, 100 khz, 1 mhz emission modes am(a3)/fm(f3)/lsb,usb(a3j)/cw(a1) frequency control p...
- 3 - rci-2950 dx rci-2970 dx chapter 2 introduction 2.0 introduction the ranger rci-2950 dx / rci-2970 dx is a solid-state, fully synthesized amateur 10 and 12 meter dual band mobile transceiver with full band coverage from 28.0000 mhz to 29.6999 mhz and 24.8900 mhz to 24.9900 mhz and all mode oper...
- 4 - rci-2950 dx rci-2970 dx chapter 3 operation figure 3-1 front panel 3.0 introduction this section explains the basic operating procedures for the rci-2950 dx / rci-2970 dx amateur 10 and 12 meter dual band mobile transceiver. 3.1 control and connections 3.1.1 front panel refer to the above figu...
- 5 - 4. On/off volume control this knob controls the volume and the power to the radio. To turn the radio on, rotate knob clockwise. Turning the knob further will increase the volume of the receiver. 5. Squelch control this switch is used to eliminate background noise being heard through the receiv...
- 6 - 16. Swr button (swr) this control is used to check swr. 17. Scan button (scan) this is used to scan frequencies in each band segment. The operation segment of this manual provides detailed information on using the scan control. 18. Memory button (mem) this button is used to program memory chan...
- 7 - 3.1.2 rear panel figure 3-2 represents the location of the following connections: figure 3-2 rear panel 1. Antenna this jack accepts 50 ohms coaxial cable with a pl-259 type plug. 2. Cw key this jack is for morse code operation, to operate, connect a cw key to this jack and place the mode swit...
- 8 - 3.2 microphone 1. Ptt switch 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 vo...
- 9 - 3.3.5 split function this function enables you to offset the transmit and receive frequencies for fm repeater operation. The transmitter frequency can offset either higher or lower than the receive frequency. To split frequencies, press the man button and the split button to select either +/- ...
- 10 - in order to achieve maximum radiated power, it is important that your antenna be in good condition, properly adjusted and matched to your transceiver. The built-in swr (standing wave ratio) meter allows you to measure your antenna condition. To operate this function, connect your antenna to t...
- 11 - rci-2950 dx rci-2970 dx chapter 4 programming 4.0 introduction this section explains the basic programming procedures for the rci-2950 dx / rci-2970 dx amateur 10 and 12 meter dual band mobile transceiver. 4.1 frequency selection frequency selection in the rci-2950 dx / rci-2970 dx can be acc...
- 12 - (4) press the scan key again (“scan-” should appear in the display window). (5) using the shf key and ( σ ) up and ( τ ) down arrows, select the lower scan limit, then press ent. The upper and lower scan limits have now been programmed. To activate the scan feature, return the radio to manual...
- 13 - the rci-2950 dx / rci-2970 dx has an offset or split frequency feature that will permit the radio to be operated in a half-duplex mode. This will allow the user to talk on fm repeaters operating in the 10 and 12 meter bands. Note the fm repeaters may require a subaudible (ctcss) tone be trans...
- 14 - rci-2950 dx rci-2970 dx chapter 5 circuit description 5.0 introduction this section explains the technical theory of operation for the rci-2950 dx / rci-2970 dx mobile transceiver. 5.1 pll circuit the phase lock loop (pll) circuit is responsible for developing the receiver’s first local oscil...
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- 17 - rci-2950 dx / rci-2970 dx cpu circuit diagram.
- 18 - rci-2950 dx rci-2970 dx chapter 6 alignment 6.0 required test equipment • dc power supply (13.8vdc, 20a) ‚ rf wattmeter (100w) ƒ multimeter „ automatic modulation meter … audio signal generator † frequency counter (100 mhz) ‡ rf signal generator (100 mhz) ˆ automatic distortion meter ‰ oscill...
- 19 - rci-2970dx levels are shown in []. Item u.U.T. Setting adjust point measurement tx power set radio to 28.000 mhz, am tx mode. Modulation off. Set radio to 28.000 mhz, usb tx mode. Af signal 30mv, 1 khz to microphone. Connect oscilloscope to tp17. Set rf pwr fully clockwise. Set clarifier cont...
- 20 - item settings adjust point measurement am sensitivity set radio to 28.000 mhz, am rx mode. Set clarifier control to 12 o’clock. Set rf gain fully clockwise. Set sq fully counter clockwise. Set nb/anl/off switch to off position. Set vol control at 2 o’clock. Connect rf sg to antenna jack frequ...
- 21 - figure 6-2 receiver test setup.
- 22 - rci-2950 dx rci-2970 dx chapter 7 maintenance 7.0 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. (1) never key the transmitter unless an...
- 23 - rci-2950 dx rci-2970 dx chapter 8 diagrams & parts list 8.0 general information on most electrical and mechanical parts is included in the parts list. The reference designators are in alphanumeric order. 8.1 ordering replacement parts parts orders should be referred to the parts department at...
- 24 - part list: rci-2950 dx / rci-2970 dx ch sw p.C.B item reference number ranger part number description 1 ept295090a ch sw p.C.B 2 pcb conn/s 3pin (copper side) cc0501037l 0.01 µ f 50wv 3 ch sw p.C.B ewrt32051s rotary sw 4 ch sw p.C.B ex07n41216 pcb conn/s 3pin remark: copper side (blue).
- 25 - part list: rci-2950 dx swr p.C.B item reference number ranger part number description 1 ept360041z swr p.C.B 2 r402 rcp141014z 100 ohm 1/4w 3 r401 rcp141214z 120 ohm 1/4w 4 c401,c402 cc0501037l 0.01 µ f 50wv 5 d401,d402 ed1n00060p diode 1n60p 6 jp2,jp3 wx01070710 jumper wire remark: copper si...
- 26 - part list: rci-2970 dx power p.C.B item reference number ranger part number description 1 epa010010a power p.C.B 2 r904 rcu141094z 1 ohm 1/4w 3 r905,r906 rcu142204z 22 ohm 1/4w 4 r902 rcm141024a 1k ohm 1/2 w 5 r911 rcp121034z 10k ohm 1/2w 6 l902 rcp101004z 10 ohm 1w 7 r903 rcp202204z 22 ohm 2...
- 27 - item reference number ranger part number description 12 c902,c903 cc0503915l 390pf 50wv 13 c906,c926,c932,c934, c937 cc0501037l 0.01 µ f 50wv 14 c905,c920,c921,c923x2 , c924x2,c925,c935,c939 ,c941,t901-t902x2, c927,c928,c930,c931, c933,c940,c929 cc0501047l 0.1 µ f 50wv 15 c901 cc0508204a 82pf...
- 28 - part list: rci-2950 dx / rci-2970 dx vr p.C.B (a) item reference number ranger part number description 1 ept295050z vr p.C.B (a) 2 c501,c505 cc0501027l 0.001 µ f 50wv 3 rf/mic rv10203451 vr 1ka-5kb 4 vol/sq rv50303453 vr 50kb-50ka 5 j501,j505 ex07n41226 pcb conn/s 2pin 6 j502-j504 ex07n41216 ...
- 29 - part list: rci-2950 dx / rci-2970 dx vr p.C.B (b) item reference number ranger part number description 1 ept295060z vr p.C.B (b) 2 c601 cc0501027l 0.001 µ f 50wv 3 rf/cal rv10203456 vr 1kb-20kb 4 j601,j602 ex07n41216 pcb conn/s 3pin remark: left: component side right: copper side (blue).
- 30 - part list: rci-2950 dx / rci-2970 dx mic p.C.B item reference number ranger part number description 1 ept295070z mic p.C.B 2 c701-c703 ccm501025t 0.001 µ f 50wv 3 j702,j703 ex07n48152 pcb conn/s 2pin 4 j701 ex07n48244 pcb conn/s 3pin 5 mic p.C.B ex06n41111 mic jack remark: left: componenet si...
- 31 - part list: rci-2950 dx / rci-2970 dx band p.C.B item reference number ranger part number description 1 ept295090z band p.C.B 2 band p.C.B ewrt32053s rotary sw 3 j402 ex07n41216 pcb conn/s 3pin 4 j401 ex07n41261 pcb conn/s 7pin 5 j403 wx01070706 jumper wire remark: left: component side right: ...
- 32 - part list: rci-2950 dx / rci-2970 dx key sw p.C.B item reference number ranger part number description 1 ept295031z key sw p.C.B 2 r701-r708 rcp161524z 1.5k ohm 1/16w 3 key sw p.C.B x 14pc ewps33042x tact sw 4 d701-d708 ex01n40064 led (white) 5 key sw p.C.B x 2pc ex07n48441 pcb conn/s 6pin re...
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- 34 - part list: rci-2950 dx / rci-2970 dx cpu p.C.B item reference number ranger part number description 1 ept295042z cpu p.C.B 2 c604 ce0102277z 220 µ f 10wv 3 r606 rcu128204z 82 ohm 2w 4 r604 rcu121214z 120 ohm 2w 5 display ex03n40460 lcd display 6 x601 ex14n46510 ceramic resonator 7 bz601 ex14n...
- 35 - rci-2950 dx / rci-2970 dx main pcb. Remark: smd component side (blue).
- 36 - rci-2950 dx / rci-2970 dx main pcb remark: component side (blue).
- 37 - rci-2950 dx / rci-2970 dx main pcb remark: copper side (white).
- 38 - part list rci-2950 dx main pcb reference number ranger part no. Description ept695010z main p.C.B r315,317,318,321, 328 rcy010004z 0 Ω 0.1w r277 rcy014794z 4.7 Ω 0.1w r179 rcy011004z 10 Ω 0.1w r272,273 rcy012204z 22 Ω 0.1w r246 rcy013304z 33 Ω 0.1w r293 rcy011504z 15 Ω 0.1w r115,226,281 rcy01...
- 39 - c5,16,23,26,41,56, 74,75,77,78,81,157, 162,170,199,258,262 ,272,273,274,277, 283,284,296,80 ck1473ab7r 0.047 µ f 50wv c10 ck2474ab7r 0.47 µ f 25wv c144 ck5475aa7r 4.7 µ f 16wv c47,49,165,174,110, 127 ck1223ab6u 0.022 µ f 50wv c171 ck1153ab6u 0.15 µ f 50wv c12 ck1222ab7r 0.0022 µ f 50wv c40,50...
- 40 - j16-50zj504)- 60z(j601) ex07n49044 wire conn/h j28-60z(j602) ex07n49108 wire conn/h j12-42z(j601) ex07n49109 wire conn/h j10-42z(cn605)- 70z(j702/703) ex07n49110 wire conn/h j27-90z(j401) ex07n49115 wire conn/h c259,260 cc0501036s 0.01 µ f 50wv dcx2 cc0501037l 0.01 µ f 50wv ic7 enta07222a ic ...
- 41 - part list rci-2970 dx main pcb reference number ranger part no. Description ept695010z main p.C.B r315,317,318,321, 328 rcy010004z 0 Ω 0.1w r179 rcy011004z 10 Ω 0.1w r272,273 rcy012204z 22 Ω 0.1w r246 rcy013304z 33 Ω 0.1w r293 rcy011504z 15 Ω 0.1w r115,226,281 rcy014704z 47 Ω 0.1w r227,231 rc...
- 42 - c5,16,23,26,41,56, 74,75,77,78,81,157, 162,170,199,258,262 ,272,273,274,277, 283,284,296,80 ck1473ab7r 0.047 µ f 50wv c10 ck2474ab7r 0.47 µ f 25wv c144 ck5475aa7r 4.7 µ f 16wv c47,49,165,174,110, 127 ck1223ab6u 0.022 µ f 50wv c171 ck1153ab6u 0.15 µ f 50wv c12 ck1222ab7r 0.0022 µ f 50wv c40,50...
- 43 - j16-50zj504)- 60z(j601) ex07n49044 wire conn/h j28-60z(j602) ex07n49108 wire conn/h j12-42z(j601) ex07n49109 wire conn/h j10-42z(cn605)- 70z(j702/703) ex07n49110 wire conn/h j27-90z(j401) ex07n49115 wire conn/h c259,260 cc0501036s 0.01 µ f 50wv dcx2 cc0501037l 0.01 µ f 50wv ic7 enta07222a ic ...
- 44 - figure 6-3 main pcb adjustment location.
