Question about Radio Communications

6 Answers

Cb radios I have very limited range for transmitting but better for recieving with cobra sound tracker installed in a 2000 kenworth T800.

Posted by on

  • Rich55 Nov 26, 2008

    I have new attennas and coax cable .would ground the attennas help?

×

Ad

6 Answers

  • Level 3:

    An expert who has achieved level 3 by getting 1000 points

    Superstar:

    An expert that got 20 achievements.

    All-Star:

    An expert that got 10 achievements.

    MVP:

    An expert that got 5 achievements.

  • Master
  • 19,396 Answers

CB radios work better if you use the channel corresrpondent to your antenna resonant frequency.

Read the article here to learn how to increase your CB range.

Posted on Nov 26, 2008

Ad
  • Level 2:

    An expert who has achieved level 2 by getting 100 points

    All-Star:

    An expert that got 10 achievements.

    MVP:

    An expert that got 5 achievements.

    Sergeant:

    An expert that has over 500 points.

  • Expert
  • 276 Answers

  • In the regular CB, the far-off signals go below the squelch level and are indistinct. But with Soundtracker on the Cobra CB radio, the noise level reduces by 90%. This significantly raises the signal-to-noise ratio, thus improving the signal clarity. As a result, the squelch level reduces drastically, and your hearing range increases a lot. Soundtracker on Cobra CB radio makes the transmission signal stronger by utilizing the available RF power output of the CB more efficiently. This greatly enhances the clarity of the transmission signal and increases the transmission range.
  • Soundtracker may work well in improving an existing signal, however it will not be able to pick up signals that are not there.

Posted on Nov 26, 2008

Ad
  • Level 2:

    An expert who has achieved level 2 by getting 100 points

    All-Star:

    An expert that got 10 achievements.

    MVP:

    An expert that got 5 achievements.

    Sergeant:

    An expert that has over 500 points.

  • Expert
  • 291 Answers

It could be the problem of the antenna not getting proper signal to transmit or the frequency problem do this problem occurs everywhere or at all the places or at some places.this could be the location not getting proper signal. thanks.

Posted on Nov 26, 2008

  • jamesrated Nov 26, 2008

    There are many benefits to the SoundTracker system. Rather than simply limiting noise in higher sound frequencies, SoundTracker will reduce noise. Another benefit is that your signal will remain intact while you are in reception mode. If you are in transmission mode, SoundTracker will strengthen your signal and give you less noise during reception and transmission.


    Instructions

    1)Push and then release the ST button on the CB radio's front panel.


    2)You will see the red LED light, indicating you have activated SoundTracker

×

  • Level 3:

    An expert who has achieved level 3 by getting 1000 points

    All-Star:

    An expert that got 10 achievements.

    MVP:

    An expert that got 5 achievements.

    Genius:

    An expert who has answered 1,000 questions.

  • Master
  • 1,142 Answers

Well you need to install an antenna booster which will enhance the signal

Posted on Nov 26, 2008

  • Level 3:

    An expert who has achieved level 3 by getting 1000 points

    All-Star:

    An expert that got 10 achievements.

    MVP:

    An expert that got 5 achievements.

    Vice President:

    An expert whose answer got voted for 100 times.

  • Master
  • 849 Answers

Need more clarification..

Posted on Nov 26, 2008

  • Level 3:

    An expert who has achieved level 3 by getting 1000 points

    All-Star:

    An expert that got 10 achievements.

    MVP:

    An expert that got 5 achievements.

    Brigadier General:

    An expert that has over 10,000 points.

  • Master
  • 6,966 Answers

Hi and welcome to FixYa,

Initially, a couple of ideas/areas to check/explore:

  • SWR should be as low as possible;
  • are you using twin/dual antenna? If yes is a phasing harness installed?
  • have you checked the power output lately?
  • are you using a power mic or std mic?
  • how is the DC power delivered to the CB, straight to a battery or via a regulator?
  • have you checked the grounding?
  • have you installed a grounding strap?
  • have you checked the grounding of the antenna mounts?
  • and are you using a fiberglass antenna?
Just a start, do postback how things turned up or should you need additional information. Good luck and Thank you for using FixYa.

Posted on Nov 26, 2008

  • 1 more comment 
  • Louie  Role
    Louie Role Nov 26, 2008

    Cobra Sound Tracker, assuming all things equal, would work best with another Cobra Sound Tracker radio. CB reception has improved with the sound tracker system (actually the noise is reduced) but the transmit power would still be the same (since it is restricted by the FCC). Therefore if the other radio is not another Cobra Sound Tracker, then our TX would be not equal to your recive efficiency.

    Alternately, it is possible that the other rigs are couple to linears.


  • Louie  Role
    Louie Role Nov 26, 2008

    Appreciate the additional information. Grounding the antenna mounts and antenna base would not only help, it is very important. The reference point of a radio antenna wold be the ground plane and in your case would be the body of the Kenworth T800. The trucks metal body would serve as the groundplane.

    As a comparison, look at the base antennas for CB, most would have these long radial arms perpendicular to the actual antenna. These serve as the groundplane. In your truck, your antennas do not have these radial arms and therefore must be compensated by the truck's body.


  • Louie  Role
    Louie Role Dec 04, 2008

    Hi again,



    Any updates or developments so far?





×

1 Suggested Answer

6ya6ya
  • 2 Answers

SOURCE: I have freestanding Series 8 dishwasher. Lately during the filling cycle water hammer is occurring. How can this be resolved

Hi,
A 6ya expert can help you resolve that issue over the phone in a minute or two.
Best thing about this new service is that you are never placed on hold and get to talk to real repairmen in the US.
The service is completely free and covers almost anything you can think of (from cars to computers, handyman, and even drones).
click here to download the app (for users in the US for now) and get all the help you need.
Good luck!

Posted on Jan 02, 2017

Add Your Answer

Uploading: 0%

my-video-file.mp4

Complete. Click "Add" to insert your video. Add

×

Loading...
Loading...

Related Questions:

1 Answer

Cobra 18wxst11 modulation limiter removal


another radio showing transmit on one channel recieve on 10 meter.

Feb 01, 2013 | Cobra 18 WX ST II 40-Channels Base CB...

2 Answers

My new Astatic Road Devil will not transmit audio on my Cobra 2000, it came with a 4pin plug and I put on a 5pin 1 white(audio) 2 shield 3 black(recieve) 4 blue(common) 5 red (transmit) yellow(n/a)


recheck that you have the wiring correct. you will need the wiring of the cobra 2000/148gtl/grantxl... can't remember the pin outs. what you have posted is not the correct one??? i think.

Dec 26, 2010 | Astatic Road Devil RD104E CB Radio

1 Answer

I have a new cobra 148 with ssb, about 6 months old, while i was away there was a storm, now the radio doesnt work , recieve or transmit, i also have a cobra 29 ltd that wont transmit but it will recieve....


make sure the mic is good. If for some reason the mic went bad, it will not receive or transmit.

As for the one with no receive, it most likely needs a new final.

If lightning hit your antron, it would be in pieces.

Aug 02, 2010 | Cobra 148 GTL 120-Channels Base CB Radio

1 Answer

We have a Cobra 148 nw st Sound Tracker When


It could be..
Final blown : worst case
bad mic : try another one
CB/PA switch on PA instead of CB
CB/WX swithc on WX instead of CB :you cannot transmit on weather.
Broken wire on mic jack.

Try the mic and switches first, and if that doesn't help you may need to take to tech. You can find one at a cb shop usually at truck stops.


Oct 27, 2009 | Radio Communications

1 Answer

Have a new cobra 148 gtl took out of box no transmit or recieve


make sure that your [swr] hadn't changed or went higher than a 1.5, anything higher will interfere with your tranmitting an recieving. other than that with out being there to see an hear your radio this would be the first place to start.

Apr 25, 2009 | Cobra 148 GTL 120-Channels Base CB Radio

1 Answer

Limited cb radio range on Kenworh t800 truck


I recall problems grounding the antenna on those kw's. May want to try a no ground antenna. Also the stock coax that comes with the truck sometimes gets broken or pinched. Go to a good shop, replace the cheap coax and grount the antennas.

Nov 26, 2008 | Cobra 25 LTD 40-Channels Base CB Radio

1 Answer

Cobra 19 DX IV CB Radio Gets no signal at all


my only idea is the frequency that Canadians transmit/recieve on is different than us down south (in the USA). I know Europe and the UK use a different frequency range so my guess is that Canada uses a different radio frequency range than the U.S. making you unable to communicate with fellow radio users. You may be able to search the frequency range for Canada vs. the U.S. and see if there's a difference. Hope this helps...and again, it's just a thought.
Montana, USA

Jul 08, 2008 | Cobra 19 DX IV CB Radio

1 Answer

Cobra 29 ltd sound tracker cb


you start by replacing every electr cap as most cb radios live in a hostile enviorment, They ALL suffer from dried up electolite. if the set is old ,that will be you first step,if you are up to speed with desoldering with out lifting copper tracks/etc, no reason why you can't have a go...do not shift trim pots or tuning can slugs
with out marking their factory positions as this can end up in a
mess
CHEERS

Jun 26, 2008 | Cobra 29 LTD CB Radio

1 Answer

Cobra 148 gtl new model


Hello bluzfan, Do you remember the old 40 channel CBs? they used basic A3A transmission (dual sideband single carrier)remember how you got crosstalk sometimes, if your power was too high? Then they went to 80 channel CBs (using a single side band as Lower Side Band (lsb) and the other as the upper side band (usb))? more crosstalk but they invented anl (automatic noise limiter)circuitry to compensate. Now you have the 120 channel CB which uses a form of side band multiplexing (20QAM) to generate 3 times more channel density 40 X 3 = 120. Here is my problem; Cobra should not have done this because you will have massive crosstalk and unaudible sounds because of the increase in channels but not an increase in initial (physical)bandwidth. I hate to tell you this but the only cure for the is to use it in 40 channel or 80 channel mode forget the 120 channel mode, or get a radio with better channel separation.

Oct 07, 2007 | Cobra 148 GTL 120-Channels Base CB Radio

Not finding what you are looking for?
Radio Communications Logo

Related Topics:

49 people viewed this question

Ask a Question

Usually answered in minutes!

Top Radio Communications Experts

eradiostore
eradiostore

Level 3 Expert

1654 Answers

Brad Brown

Level 3 Expert

17115 Answers

yadayada
yadayada

Level 3 Expert

79186 Answers

Are you a Radio Communication Expert? Answer questions, earn points and help others

Answer questions

Manuals & User Guides

Loading...