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- Rci 2990 Owners Manual
- Rci 2990 Parts Lists Service Manual
- Ranger Rci 2990 Service Manual
- Ranger Rci 2990 Service Manual
Factory Service Manual Page 1-1 to 5-4 Page 7-1 to 7-13 Page 8-1 to 8-13. RCI-2950 Inter-connection Diagram Chassis Exploded View Drawing. PCB Layouts and Parts Main PCB. Pictures, Manual and Specifications of the RCI 2990 All-Mode Base Export Radio / Plaatje, handleiding, en Specificaties van de RCI 2990 All-Mode Basis Export Radio. Feb 27, 2020 Service Manual for RCI-2990 needed. Discussion in 'CB Radio Service Manuals' started by Tweek, Feb 26, 2020. Tweek Hushpuppy Jr in the Tarheel. Joined: Nov 10, 2013. RCI 2990 Help I did a favor for my neighbor and he in turn gave me this RCI 2990 witch I thought was 2990dx that use to belong to a friend of his. Anyway the radio only does about 40 watts on AM and 100w on SSB.
RCI2950, 2970, & 2990 ALIGNMENT PROCEDURE
Free expert DIY tips, support, troubleshooting help & repair advice for all Ranger Radio Communication products. Where can I get a service manual for an rci-2990. Feb 27, 2020 Service Manual for RCI-2990 needed. Discussion in 'CB Radio Service Manuals' started by Tweek, Feb 26, 2020. Tweek Hushpuppy Jr in the Tarheel. Joined: Nov 10, 2013 Messages: 31 Likes Received: 21. I posted over on the schematics thread, but thought I'd try it here, too. I'm mostly in need of the schematic for a 2990, but the service manual.
1.0 INTRODUCTION
The following steps arerequired to re-align the RCI-2950/2970. CAUTION: Alignmentshould only be attempted by personnel trained in RF product testing andalignment.
Rci 2990 Owners Manual
PLLSYNTHESIZER / OSCILLATOR FREQUENCY ALIGNMENT
1.1 Connect digital voltmeterto jumper J13. Adjust L17 for a reading of 2.2 VDC ±0.1 volts
1.2 Connect digital voltmeterto pin 3 of IC7. Adjust L21 to 1.2 VDC ±0.1
1.3 Connect a frequencycounter to L61 and adjust VC1 for a reading of 10.240 MHz ±10Hz
1.4 Connect a 50 ohm dummyload to the antenna connector
1.5 Connect a frequencycounter to pin 3 of IC14. Ensure that the clarifier is precisely at the12 o'clock position. Adjust
VC2 for 10.240 MHz ± 10 Hz. Key the transmitter and adjust VR21 for 10.240MHz ±10 Hz.
1.6 Connect a frequencycounter to the cathode of D45. Put mode selector on AM. Key the transmitterand adjust L27 for
10.6950 MHz ± 10Hz.
1.7 Adjust VR7 fully clockwise.Leave the frequency counter connected to D45. Put the mode selector onUSB. Key the transmitter and adjust L29 for 10.6925 MHz ± 10 Hz.
1.8 Put the mode selectorin LSB. Key the transmitter and adjust L28 to 10.6975 MHz ± 10Hz. ReturnVR7 to
approximately the middle of rotation.
1.9 Put the mode selectorin AM. Connect X10 probe to pin 13, IC17 Check the frequency counter for5.930 MHz.
Warcraft 3 reign of chaos torrent iso ps2. 1.10 Set the oscilloscopefor 50nS (.05uS) per division on the vertical input. Connect X10 probeto IC17 pin 13 and very
carefully adjust L24 and L25 for the best waveform.
RECEIVERALIGNMENT
2.1 Put the mode selectorin FM, the RF gain fully clockwise, Clarifier at 12 o'clock and the frequencyat 28.0300 MHz
2.2 Connect an FM signalgenerator to the antenna connector. Set the modulation for ±3 kHz, outputlevel at 0.5uV.
2.3 Connect a SINAD meterto the external speaker jack, adjust volume to approximately 10 o'clock.
2.4 Connect X10 probeto the cathode of D12. Set oscilloscope sweep selector for 1ms per divisionand vertical input
selector for 10mv per division.
2.5 Adjust L8 for thebest SINAD reading and the least distortion wave form on the scope. Donot try tuning this coil for
the maximum, as this will result in degraded performance.
2.6 Adjust L9,L11,L12,L13,L14,L4,L3,L5and L6 for maximum on scope. Reduce generator if necessary, so as not to
exceed vertical height on scope.
2.7 Adjust L6 and L5 forbest SINAD
2.8 Put mode selectoron LSB. Signal generator to 28.0290 MHz, modulation of output level at0.5uV. Tune L15 and
L16 for maximum waveform on scope.
TRANSMITTERALIGNMENT
RCI-2970 LEVELSARE SHOWN IN [ ]
3.1 Connect an audio generatorto pin 2 and ground (pin 1) of the Mic connector. The Mic gain should befully
counterclockwise. Set generator for 30mV RMS., 1 kHz sinewave
3.2 Adjust VR14 fullycounterclockwise
3.3 Adjust VR12 fullycounterclockwise.
Sims 4 deluxe edition mac torrent. 3.4 Connect a wattmeterand 50 ohm dummy load to the antenna connector. Set the wattmeter for 30Wscales [100W]
3.5 Key the transmitterand slowly increase the Mic gain until you obtain approximately 10W. AdjustL19, L48, L47 and
L43 for maximum reading on the wattmeter. Reduce Mic gain if necessaryto maintain about 10 to 15W on wattmeter
[40-50W].
3.6 Increase the Mic gainto maximum (fully clockwise). Key transmitter and adjust L34 for maximumpower output.
Power will typically be 30-35W [100-120W].
3.7 With the Mic gainstill maximum of LSB, key the transmitter and adjust VR12 for 25W [100W].
3.8 Put the mode selectoron AM. Key the transmitter with no modulation applied and adjust VR13 for10W [50W].
3.9 With the mode selectorstill on AM, re-connect 1 kHz audio the generator to radio and key transmitter.With Mic gain at
maximum, adjust VR14 for 90% modulation. Use the mod meter or oscilloscopewith RF sampler [85%].
3.10 Put the mode selectoron FM. Key the transmitter and check for 4 kHz deviation ±0.5 kHz. Thereis no deviation
adjustment provided in this radio. Simply check for sufficient transmitaudio. Use the deviation meter or the
service monitor.
Rci 2990 Parts Lists Service Manual
PLLSYNTHESIZER / OSCILLATOR FREQUENCY ALIGNMENT
1.1 Connect digital voltmeterto jumper J13. Adjust L17 for a reading of 2.2 VDC ±0.1 volts
1.2 Connect digital voltmeterto pin 3 of IC7. Adjust L21 to 1.2 VDC ±0.1
1.3 Connect a frequencycounter to L61 and adjust VC1 for a reading of 10.240 MHz ±10Hz
1.4 Connect a 50 ohm dummyload to the antenna connector
1.5 Connect a frequencycounter to pin 3 of IC14. Ensure that the clarifier is precisely at the12 o'clock position. Adjust
VC2 for 10.240 MHz ± 10 Hz. Key the transmitter and adjust VR21 for 10.240MHz ±10 Hz.
1.6 Connect a frequencycounter to the cathode of D45. Put mode selector on AM. Key the transmitterand adjust L27 for
10.6950 MHz ± 10Hz.
1.7 Adjust VR7 fully clockwise.Leave the frequency counter connected to D45. Put the mode selector onUSB. Key the transmitter and adjust L29 for 10.6925 MHz ± 10 Hz.
1.8 Put the mode selectorin LSB. Key the transmitter and adjust L28 to 10.6975 MHz ± 10Hz. ReturnVR7 to
approximately the middle of rotation.
1.9 Put the mode selectorin AM. Connect X10 probe to pin 13, IC17 Check the frequency counter for5.930 MHz.
Warcraft 3 reign of chaos torrent iso ps2. 1.10 Set the oscilloscopefor 50nS (.05uS) per division on the vertical input. Connect X10 probeto IC17 pin 13 and very
carefully adjust L24 and L25 for the best waveform.
RECEIVERALIGNMENT
2.1 Put the mode selectorin FM, the RF gain fully clockwise, Clarifier at 12 o'clock and the frequencyat 28.0300 MHz
2.2 Connect an FM signalgenerator to the antenna connector. Set the modulation for ±3 kHz, outputlevel at 0.5uV.
2.3 Connect a SINAD meterto the external speaker jack, adjust volume to approximately 10 o'clock.
2.4 Connect X10 probeto the cathode of D12. Set oscilloscope sweep selector for 1ms per divisionand vertical input
selector for 10mv per division.
2.5 Adjust L8 for thebest SINAD reading and the least distortion wave form on the scope. Donot try tuning this coil for
the maximum, as this will result in degraded performance.
2.6 Adjust L9,L11,L12,L13,L14,L4,L3,L5and L6 for maximum on scope. Reduce generator if necessary, so as not to
exceed vertical height on scope.
2.7 Adjust L6 and L5 forbest SINAD
2.8 Put mode selectoron LSB. Signal generator to 28.0290 MHz, modulation of output level at0.5uV. Tune L15 and
L16 for maximum waveform on scope.
TRANSMITTERALIGNMENT
RCI-2970 LEVELSARE SHOWN IN [ ]
3.1 Connect an audio generatorto pin 2 and ground (pin 1) of the Mic connector. The Mic gain should befully
counterclockwise. Set generator for 30mV RMS., 1 kHz sinewave
3.2 Adjust VR14 fullycounterclockwise
3.3 Adjust VR12 fullycounterclockwise.
Sims 4 deluxe edition mac torrent. 3.4 Connect a wattmeterand 50 ohm dummy load to the antenna connector. Set the wattmeter for 30Wscales [100W]
3.5 Key the transmitterand slowly increase the Mic gain until you obtain approximately 10W. AdjustL19, L48, L47 and
L43 for maximum reading on the wattmeter. Reduce Mic gain if necessaryto maintain about 10 to 15W on wattmeter
[40-50W].
3.6 Increase the Mic gainto maximum (fully clockwise). Key transmitter and adjust L34 for maximumpower output.
Power will typically be 30-35W [100-120W].
3.7 With the Mic gainstill maximum of LSB, key the transmitter and adjust VR12 for 25W [100W].
3.8 Put the mode selectoron AM. Key the transmitter with no modulation applied and adjust VR13 for10W [50W].
3.9 With the mode selectorstill on AM, re-connect 1 kHz audio the generator to radio and key transmitter.With Mic gain at
maximum, adjust VR14 for 90% modulation. Use the mod meter or oscilloscopewith RF sampler [85%].
3.10 Put the mode selectoron FM. Key the transmitter and check for 4 kHz deviation ±0.5 kHz. Thereis no deviation
adjustment provided in this radio. Simply check for sufficient transmitaudio. Use the deviation meter or the
service monitor.
Rci 2990 Parts Lists Service Manual
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Ranger Rci 2990 Service Manual
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Ranger Rci 2990 Service Manual
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