Question about Cobra 148 GTL 120-Channels Base CB Radio

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Cobra 2000 I have no receieve audio but strong rf and if I touch the volume control I hear sound out of speaker.

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  • Cobra Master
  • 1,847 Answers

Bad ground inside radio or cold solder . Be careful of rf burns.

Posted on Feb 16, 2015

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SOURCE: cobra 2000

Unplug it,and remove the cover. Hook it back up and turn it on. Take a pencil with the eraser end and gently press around where the volume is soldered in the circuit.Wiggle the volume knob,listen if volume change. Sounds like a cold solder joint.Re- solder the joints to volume,or could be a dirty control, if still no volume, turn off and spray inside of volume tuner with contact cleaner. hope this helps..

Posted on Mar 30, 2010

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1 Answer

Have to use rf gain control to control volume. no control or very little with af gain control. ft101ee


RF gain is not used to control volume. It's used to adjust the sensitivity of the radio. If you have a station nearby that's very strong that you wish to listen to, turning down the RF gain will help reduce distortion and/or interference. The control for Volume is "AF Gain" (Audio Frequency Gain). You want to use it to set the volume level.

Oct 15, 2013 | Radio Communications

1 Answer

HP Pavilion DV7-1135nr laptop internal speakers won't play


try installing proper drivers for the AUDIO CARD! the orange led only indicates the HTK HOTKEYdrivers are working properly, it does NOT says a thing about audio card drivers! so i suggest you to install proper drivers for audio playback!

Apr 05, 2013 | Computers & Internet

1 Answer

I cannot hear ANYTHING. The speakers are plugged in and properly inserted into the computer but i still cannot hear anything


if your computer came with a motherboard disc the sound drivers could be on it
click start control panel administrive tools computer management device manager scroll to sound,video and game controllers you might see a yellow question mark? Right click to reinstall drivers or uninstall
click start control panel sounds and audio,volume,advanced,speakers make sure you have selected the
(((appropriate speakers))) also audio you will find 3 drop down lists make sure you have the correct settings there
also
click start control panel sounds and audio devices you can adjust the volume there also select speaker volume you can change your settings there you can also tick in the box place icon in taskbar
if his does not fix the problem

have you tried this control panel sounds and audio,volume,advanced,speakers select the appropriate speakers from the drop down list or navigate to the device manager scroll to system devices + to expand,system speaker right click properties then select use this device (enable) also you might check
the speakers plug/outlet is usually at the back of the computer you will have to open up the computer to check the lead attached to the rear of the input plug make sure the connection is good
try cleaning your computer of dust using a fine air blower from a compressor making VERY sure that there is no MOISTURE in the air line specifically around the sound card and the CPU central processing unit dust causes static to build up in a computer
make sure you have an earth ******** before touching any parts inside your computer
hope this helps

May 11, 2011 | Kinyo PS-107 Computer Speakers

1 Answer

Cobra 2000


Unplug it,and remove the cover. Hook it back up and turn it on. Take a pencil with the eraser end and gently press around where the volume is soldered in the circuit.Wiggle the volume knob,listen if volume change. Sounds like a cold solder joint.Re- solder the joints to volume,or could be a dirty control, if still no volume, turn off and spray inside of volume tuner with contact cleaner. hope this helps..

Mar 30, 2010 | Cobra 148 GTL 120-Channels Base CB Radio

1 Answer

Want to get talkback in a cobra 29


When you key up the mic ungrounds the speaker so you don't hear anything through it, so to get talkback you're putting a 100 ohm 1, or 2 watt resistor between the switched side of the speaker and ground, now when unkeyed the mic grounds the speaker as usual, but when you key the resistor allows a bit of audio from the audio amplifier, not decoded RF, to still get through. I think the pa/ext spkr. jacks are a convenient place to connect it. You may decide to control talkback by running the circut thru a switch like brite / dim switch . Want less talkback, use more resistance, 150 ohm . Too much talkback can become feedback . I hope this helps, J

Nov 25, 2009 | Cobra 29 LTD CB Radio

3 Answers

No sound coming back


Is the radio set up correctly? Is the volume turned up / squelch turned down?

If they can hear you but tou cant hear them, try opening the radio up and checking the speaker connections.

Ill need to know the result of those questions and tests before i can help further...

M3ODQ

Feb 02, 2009 | Cobra 29 LTD CB Radio

1 Answer

Cobra 148 GTL steady tone though speaker


try rerouting your coax cable and make sure it's long enough

Jul 07, 2008 | Cobra 148 GTL 120-Channels Base CB Radio

4 Answers

Cobra 2000 gtl


cobra 2000
am carrier 4.4 volts will not ajust...ssb carrier will 3.5 volt will ajust but max out put is only 3.5 volts.losses all voltage at ssd carrier when switched to usd r lsb

Jul 03, 2008 | Cobra 148 GTL 120-Channels Base CB Radio

3 Answers

I have gateway boston digital BA735 on a dell dimension 3000 with soundMAX integrated digital audio sound card but get no sound from speakers. What can i do to get speakers to work?


we have to check whether the issue with speakers or in sound card..just remove the audio jack from computr and touch the jack with ur fingers..u shuld hear some noise in speakers..if u can able to hear that speakerrs are fine and the issue with the sound card..do reply

Jun 17, 2008 | Computers & Internet

1 Answer

Recieving problems


turn the RF gain all the way up and leave it there. Also turn the squelch down until you hear white noise, then turn it up just until it goes away.

RF gain is how sensitive your receive is. The higher it is, the more range you have. There really is no need to turn it down ever, unless you are trying to not hear some one out in the distance. Normal operation, RF gain should be all the way up.

Now squelch is used to quiet non signal noise. Like white noise or interference noise, Or other radios with a really weak signal that you can't hear completely any way.

You just want it so it just quiets the fuzz noise. Depending on background interference and the amount of radio traffic, the may have to be adjusted to silence the noise you don't want to hear. When a strong audio signal is received, it will break the squelch, the higher the squelch is set, the stronger the signal needs to be to break it, otherwise it will silence it.

May 03, 2008 | Cobra 19 DX IV CB Radio

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