Question about Cobra 29 LTD CB Radio

3 Answers

Help my cb does not receive very well i can not here people talking to me if theree then 1 mile away what is the problem

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  • Kelekona Dec 11, 2007

    I can sometimes get 6 miles and other times 50ft. I have a good ant, been peaked n tweaked, had the receive n trans turned up. Ant connections are good. Unit only 6-/+ old. Had swr's checked and do it myself, but just cant fix ant lite. Its intermittent, some days its on every trans, some never.

    TY, Kevin

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3 Answers

If your antenna is mounted to your mirror arm make sure the mirror arm is grounded to the chassis. i solved the same problem by undoing one bolt in the arm and connecting a short piece of 10g wire with an eyelet to the mirror then take the other end of the wire with eyelet and unscrewing one bolt in the door hinge and puting wire in that place. if you use dual anttena do the same for both i found this help u get better recieving power hope this helps

aka trigger finger

Posted on Aug 23, 2008

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I still haven't seen any help

Posted on Dec 30, 2007

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Sounds like an antenna issue. Double check the fittings on antenna that they are secure and that the inner mount of the antenna is properly soldered. Larger Ground plane will be helpful too.

Posted on Oct 01, 2007

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2 Answers

Galaxy dx959 will not receive. Speaker is working. S meter is showing incoming signal.


the over power doides may be blown. you should start there .they should be marked D-1 and D-2. you may want to replace them with diodes of a higher rating.

Jun 26, 2012 | Galaxy Radios DX 959 SSB CB Radio

1 Answer

I just got my new midland CB and installed it on sunday. i can hear people however everytime i try to talk no one responds. The indicator light goes on and the rf meter goes up however i am not getting...


check the SWR. the antenna may not be tuned. Also, you may be hearing skip. If so, they are thousands of miles away, and you don't have enough power to talk to them.

Find some one close to test it.

Nov 03, 2010 | Midland 5001 40-Channels Base CB Radio

1 Answer

Why dont these reach very far??? i got an Pyramid 20cb antenna Any good??


CB radios are limited to 4 watts input to the 'final'. CB is suppose to be 'line of sight' or about 20 miles. Variables include where you are using the radio ... in the city or in the country ... signal is blocked by buildings and other environmental conditions. A full wave is 36 feet ... is your antenna some number that will multiply to 36 feet? 1/2 wave antenna = 18 feet ... max allowed in the US ... max hight is 20 feet above the mount. If you have an 'old' CB, they were limited to 5 watts to the final. On a good night, one might talk 100 miles away ... but is of course not legal.

Sep 21, 2010 | Uniden PRO510XL 40-Channels Base CB Radio

1 Answer

How far can I get this thing to reach,and how ?


With a good antenna, and the antenna tuned for best SWR, about 8 miles from mobile to mobile, and about 12 miles from mobile to base radio.

You can modify the radio and turn up the power, it will get you more range, and make the radio sound louder, but you will still be limited, because radio is line of sight. Hills and structures block RF signals. you go down a hill, you will loose distance.

With a cobra 29 that has been tuned up sitting on a hill about 1400 feet above sea level, I was able to talk to some one on a base radio about 50 miles away with out my amp on. I also have a very very good antenna. not something you normally see either.

With a clear on blocked line from antenna to antenna, you can talk really far on a stock radio. There is a saying for CB antenna's. "Height is might."

There are a lot of things that effect the distance a CB can reach.

If there is Skip active, you can possibly talk thousands of miles with a stock radio. Skip is when the ionosphere becomes charged by solar energy form a solar flair and causes the radio waves to bounce off them, making it seem like you have a straight line of sight to places that would normally be blocked by the natural curvature of the earth.

Then there are Linear amplifiers. They increase the power of the signal of the radio. They will increase the output range, but then you may be talking to people that don't have an amp, and that you will not be able to hear them because they do not have enough power to reach you.

So, get a really good antenna. Make sure it is tuned for the lowest possible SWR. Refer to the manual that came with your radio on how to find out your SWR, and how to lower it. There will also be instructions on how to tune the antenna that came with the antenna. Then bring the radio to a CB shop or a CB tech and have them tune it up. It will cost about $30.

With my radio barefoot, and can normally talk around 30 miles or more without worrying about hills and obstructions. (Barefoot means, without the amp on)

Sep 15, 2010 | Cobra 25 LTD 40-Channels Base CB Radio

1 Answer

I just purchased two radios. How far will they transmit and receive with good clarity in the city? I need to transmit and receive from about six to eight miles away clearly. Thanks.


bobengelman,

Typically and unmodified handheld CB will have a decent talk distance of 1-2 miles with both being a handheld. Further distances can be had if one of the radios was a mobile or base station with distances of more than five miles with weak signals. In some cases the antenna can be changed to a better longer antenna. Extention type antennas typically transmit about a mile per watt. Conditions such as terrain will have an impact on signal specifically mountains or buildings. Better results may also be had by purchasing a mobile magnet mount with a PL-259 to BNC to fit the radio. A magnet mount placed on a air conditioning unit or large cookiesheet as high as possible will make decent gains for distance if the radios are intended to be stationary.

JT Radiojunkie

Jun 21, 2010 | Midland 75-785 Handheld CB Radio

1 Answer

I can receive well, but have limited output..can receive from drivers over 10 miles, but when I try to talk back I only have about a 1 1/2 mile range I got a new power mic, but it doesnt seem to help......


Could be poor antenna, or not high enough on the vehicle.

Also most truckers have had their radio's peaked and tuned.

If this radio is stock its only putting out 4 watts, which should still get you about 8 miles.

I do not know what the modulation and AM power POT's on the board of this radio are.

You can take it to a truck stop that has a radio shop. they can peak it usually for less then $30

Oct 20, 2009 | Magnum S9 Base CB Radio

1 Answer

Cobra 29 cb calibaration


bad ground but the time of day is also a factor. If you are trying to talk when there is a lot of ground noise you may not get out more than a half mile or so.

Jul 29, 2009 | Cobra 29 LTD CB Radio

1 Answer

Rushing sound (noise) galaxy 88 HL


RUSHING SOUND ?
1. Get the noise then disconnect the coax and see if noise goes away on receive, if noise goes away then address the ground on your antenna,
if noise still there then address the ground wire from power source

Mar 30, 2009 | Galaxy Radios DX- 88HL Base CB Radio

2 Answers

Making the recieve work better


Hello lugnut, the lack of receiver sensitivity may denote a problem with the RF input amplifier or the IF stages. before attempting to boost the incoming signal I would first want you to check the RF and IF receiver functions first. If there is a problem it would be more advantagous to fix it first. You will need the following equipment 1)schematic (To locate components and test points) 2)digital multimeter (to measure voltages and test points) 3)Radio Frequency (RF) Generator (to provide test and reference signals) 4)IF demodulator probe (to test for proper IF signal amplification along the IF stages) 5)Oscilloscope (To see if audio is being properly reproduced at the audio detector stage) 6) SWR meter(to test the standing wave ratio between (along the coaxial cable path) the antenna and the CB unit. 7)Antenna Dummy load (to emulate the antenna, under FCC law you can not transmitt into the air while testing and repair any transmitter or transceiver). I hope this provides insight into what you will need to work on this problem. These pieces of equipment are needed to properly troubleshoot a CB radio

Sep 12, 2007 | Galaxy Radios DX-66V Base CB Radio

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