Question about Cobra 29 WX NW ST 40-Channels Base CB Radio

1 Answer

Turning up the modulation in a cobra 29 wx radio

Posted by Anonymous on

1 Answer

  • 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.

  • Cobra Master
  • 1,795 Answers

Vr4 is it

Posted on Nov 25, 2014

6 Suggested Answers

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.
goodluck!

Posted on Jan 02, 2017

Communicomm
  • 90 Answers

SOURCE: cobra 29 WX

This "talkback" feature may be due to someone having modified the radio by adding a small resistor between the speaker circuit & circuit ground.Another cause could be the shield lead in the mike plug shorting to the plug itself.

Posted on Jul 20, 2008

informatica
  • 1114 Answers

SOURCE: Cobra 75 WX ST 40-Channels Handheld CB Radio manual/antenna

Hi - You can download the manual from the link underlined in blue below:

75 WX ST

Other info here.

be2de56.jpg

Please take a moment to rate this solution & let us know if the information given was useful to you - Good Luck!

Informatica

Posted on Aug 31, 2008

wyoed1
  • 211 Answers

SOURCE: cobra 29 ltd modulation problen

You need to check the modulation on a modulation meter. Just because the meter doesn't peg, doesn't mean the modulation isn't working. Usally a meter pegging, means the swr's are too high or the meter is misadjusted. If in fact the modulation is low, their is a pot inside the radio (VR4) that will add gain to the modulation circuit. This setting is legally supose to be set by a qualified technician.
Good Luck
Ed Meshechek ( Radio Man )
NC Electronics
PO Box 1696
414 6th St.
Mills, Wyoming
82644
307-266-4675
wyoed1@aol.com

Posted on Dec 03, 2008

Benimur
  • 6966 Answers

SOURCE: no receive cobra 29 ltd classic

Hi and welcome to FixYa,

Initially, pls confirm that there is modulation (transmit audio). The reason I asked is if IC4 (TA7222P) is blown, then the radio would have no audio amplifier which would explain no receive audio. Additionally, the final and pre-final (TR15 & 15) gets is modulated TX+12 through D8 from T1 which in turn is the output of IC4 through C48.

Perhaps a schematic diagram may be of further help.

Good luck and Thank you for using FixYa. Happy Holidays.

Posted on Dec 18, 2008

  • 773 Answers

SOURCE: what exactly does the anl nb/anl button do on my

ANL stands for "Automatic Noise Limiter" and NB stands for "Noise Blanker".

The ANL gets rid of a lot of interference noise caused by mechanical noise from motors and other electronic components in a car.

It also gets rid of noise from other sources of interference.

The NB is for extreme cases of noise, but can slightly lessen your receive sensitivity.


Basically both functions help decrease interference noise.

Posted on Nov 24, 2010

Add Your Answer

Uploading: 0%

my-video-file.mp4

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

×

Loading...
Loading...

Related Questions:

1 Answer

Cobra 29 wx nw st how to increment modulation


Clip D-11 .diode 11 .this is the modulation limiter .

Jan 30, 2014 | Cobra 29 WX NW ST 40-Channels Base CB...

1 Answer

Every time i turn on my cobra 29 wx nw st sound tracker it goes back off


Hi Davis, please post on CB radio forum, this is Radio scanner forum.

Cheers,
Peter

Feb 20, 2013 | Cobra 29 Wx Nw St 40-channel Nightwatch Cb...

2 Answers

Is it possible to convert the cobra 29 wx nw st sound tracker cb to 10 meter amateur band?


No it cannot. If you want that buy a Ranger or a Galaxy.

The 29 can be altered to increase modulation and turned down in power to match it to amp for increased output of power.

Set to dead key a watt or so with a 100 watt amp it would dead key low and swing to 80 to 100 watts pep.(peak envelope power)

Mar 16, 2012 | Cobra Radio Communications

1 Answer

I want to know what to cut or remove and tune to get maximum modulation and output out of my cobra 18 wx st ll thanks


VR2 is the modulation adjustment. I can't remember which way you turn it to get more modulation. It's usually to the left.

Hook up a watt meter. Turn it one way, and check it. If it is up a lot you got it. If its lower just turn it the other way.

Put a jumper in place of the diode at D21 which will increase voltage to the final and give you a little bit more. not much more you can do to this radio. It's the worst radio Cobra ever made. I wouldn't waste my time. I would use that one as a door stop and go get a cobra 29. You will see more out of it.

Oct 25, 2010 | Cobra 18 WX ST II 40-Channels Base CB...

1 Answer

Where can i get tuneup specs for Cobra 18 wx st extra low modulation


The cobra 18 wx st is the worst radio Cobra ever made. I don't know why they still make it. It's not gonna do much no matter how much you tune it up. Its a bad radio.

Get a cobra 29, and turn VR4 all the way counter clockwise.
(this will not work on the 18)

VR2 is modulation in the 18 wx st. adjust it while checking on a watt meter to see when its all the way up.

Sep 20, 2010 | Cobra 18 WX ST 40-Channels Base CB Radio

1 Answer

My cobra 29 wx nw st can recieve, but will not broadcast


Could be anything from a broken microphone wire to a bad final or regulator.

Sep 11, 2010 | Cobra 29 WX NW ST 40-Channels Base CB...

1 Answer

Cobra 29 NW WX BT Channel indicator


Still have the receipt? Take it back to the store and exchange it for another one. Easiest and quickest solution.
Otherwise, you can unplug the power from the radio and take the top cover off and check at the channel selector module to see if there's a broken wire or a broken solder joint. If the radio received rough treatment during some point in shipping (the outside packaging box may show no signs if it) it could be just a bad connection.
With the top cover off, replug the power and turn on the radio. BE CAREFUL IN HERE, THOUGH!! With a pair of insulated needle nose pliers, gently move the wires that connect to the channel selector module and see if it will light up. If so, disconnect the power and re-solder the joint or replace the broken wire. Reinstall the cover and reconnect the power, you should be good to go.
WARNING...if you open the cover on the radio, you cannot return it. Do this only as a last resort, if you can't return it for an even exchange for the same model radio.

Oct 22, 2009 | Cobra 29 LTD CB Radio

1 Answer

Cobra 29 WX


This "talkback" feature may be due to someone having modified the radio by adding a small resistor between the speaker circuit & circuit ground.Another cause could be the shield lead in the mike plug shorting to the plug itself.

Apr 23, 2008 | Cobra 29 WX NW ST 40-Channels Base CB...

Not finding what you are looking for?
Cobra 29 WX NW ST 40-Channels Base CB Radio Logo

Related Topics:

103 people viewed this question

Ask a Question

Usually answered in minutes!

Top Cobra Radio Communications Experts

AnyMHz.com
AnyMHz.com

Level 2 Expert

500 Answers

Steve

Level 3 Expert

3287 Answers

Brad Brown

Level 3 Expert

15441 Answers

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

Answer questions

Manuals & User Guides

Loading...