Question about Ranger Communications RCI-6900F-25 CB Radio

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RCI 2990 WON'T TURN ON IT BLINK AN GO OFF - Ranger Communications RCI-6900F-25 CB Radio

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The 2990 is a base station and it would be tough to hook it up "backward". You either have a faulty On/Off switch or a bad voltage regulator circuit withing the power supply of the radio. It is not uncommon for those radios to have power supply problems. Especially if the RF power has been turned up.

Posted on Feb 14, 2015

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  • Master
  • 773 Answers

You have hooked it up backwards. You blew the polarity protection diode. It needs to be replaced.

Posted on Nov 25, 2010

  • mymojo Jan 25, 2011

    Sounds like a bad pass transistor. Call Ranger they can help you. Here is the service departments phone number (760) 440-0125

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Posted on Jan 02, 2017

  • 141 Answers

SOURCE: I need a manual to base station CB Ranger RCI-2990

Manuals for the 2990 are the same as a 2950

Posted on Jan 30, 2010

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something to do with powering up the radio from a cold start

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Mic Wiring Info
Stock Mic Wiring
1. Ground Shield
2. Audio Yellow
3. Transmit Red
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5. CH. Up White
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Rci 2990 won't keyup


If on all modes check the mic first to see if wired right or wires broken--this should have am-fm-lsb-usb---which works or do not work.

Apr 24, 2012 | Radio Communications

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Rci 2990 will not key up.


Bad or incorrectly wired mic (broken wires in mic or cable) OR transmit circuit has failed.

Someone with a Dummy load/watt meter can test this safely.

Apr 18, 2012 | Radio Communications

1 Answer

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Check the RF output transistor, usually heatsinked to the inner chassis, microphone wiring needs to be checked for breaks since it is part of the circuit, sub another if possible.

Apr 18, 2012 | Radio Communications

1 Answer

Ihave a gargeled recive sound


Check the position of the mode selector switch. You may be receiving a SSB (single side band) transmission that is not on the exact same frequency as you or, your radio is in AM or FM mode. You will need to select either USB or LSB (upper or lower side band) and vary the clarifier knob until the sound becomes intelligible. If the sound does not become clear, try the other side band and repeat varying the clarifier knob.

Conversely, if you are in USB or LSB mode and there is a transmission on AM or FM, it will have the same garbled sound. Try changing the mode to AM and the FM. If it does not become clear, it is likely a SSB transmission and you are not on the exact same frequency of the transmission you are hearing. Vary the clarifier knob until it becomes clear - or change to the other side band if needed and try the clairfier again.

The short story is that you must be in the same mode and on the same exact frequency. When in AM or FM, this is less of a problem as these are much more wide banded signals than SSB signals.

The 2990 is really a 50 watt 10 meter amateur radio - but is geared to CBer's as it is easily modified to work in the CB frequency range and the so called "free band" between USA's CB (11 meters) and worldwide amateur 10 meter bands. Be careful transmitting this radio on CB frequencies as it violates FCC rules for power output there - and transmitting in the 28MHz - 29.7MHz requires a valid amateur radio license. Fifty watts on ham frequencies is tiny compared to the 1500 watts permitted. Why not get your ham license (here's how) and leave the "Chicken Band" (and all it entails) behind. You won't miss it!

I hope this helps and good luck!

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1 Answer

Galaxy saturn turbo cpu board


  • These boards are hard to find. If any place stocks them new it is Maycom http://maycomcomm.com/ I have bought lots of Galaxy boards from there.

  • I have also gone chicken hunting before and just start randomly calling CB shops and see if they have one for sale from one of their parts radios. One time I could not find a heat sink anywhere and they were going for $25 new if one did pop up somewhere. I landed 4 like new radio heat sinks with hardware shipped for $10. So this method can pay off with some persistence.

  • Also the board out of a Galaxy 2527 or an RCI 2990 will work as well. Ranger often stocks these parts too you just have to already know this. So give them a ring too http://www.rangerusa.com/ and ask about the RCI 2990 board. Of course I recommend you exhaust all options for the OEM board first.

  • Hope this helps.

Nov 24, 2011 | Radio Communications

3 Answers

I need a manual to base station CB Ranger rci-2990. Can you tell me where to download or purchase this manual. Thanks


http://www.rangerusa.com/websupport.html

http://www.worldwidedx.com/cb-band-cb-radios/18036-manual-rci-2990-a.html

you may find some help with these sites

Sep 24, 2009 | Radio Communications

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