20 Most Recent Cobra HH 38 WX 40-Channels Handheld CB Radio Questions & Answers

good luck with it.

Hi Peter,Steps to try:1: adjust volume up2: Check batteries are fully charged3: adjust squelch levelIf all fails, join yahoo group specific to Cobra HH38WX and they'll give you the lowdown on this unit and you can freeely dowload user manual as well as other great stuff.Hope this helps.Chhers.Peter

sometimes checking for dry joints on the board and resoldering helps

The antenna is your problem not much gain. Height is everything tx and rx. Although it would not compare to a conventional cb size negates performance. Seeing is believing in this case hearing get adapter to connect to standard coax of antenna. (PL259) to BNC Coax Adapter Radio Shack sells them. And dont ask or buy any radios there. They are hardly the radioshack of choice anymore.

• If you put 4 watts into a four-foot antenna, you will get the same power out of that antenna as if you were putting 2 watts into a 102-inch whip.
  
• If you put 4 watts into a 3-foot antenna you will get the same power out as if you were putting about 1.5 watts into a 102-inch whip.
  
• If you put 4 watts into a 7.5 inch antenna on a hand held CB, it would put out as much power as a third of a watt into a 102-whip.
  
• If you put 4 watts into a 102-inch whip antenna, it is the same output as if you put 11 watts into a 3-foot whip.
  
• If you put 4 watts into a 102-inch whip antenna,, it is the same as if you put 14 watts into a 28-inch antenna.
  
• If you put 4 watts into a 102-inch whip antenna, it is the same as if you put 54 watts into a 7.5 antenna.

There is. A protection circuit just like a full size cb. The may be blown or shorted. Not letting the radio turn on. Or even a burnt circuit trace. We do not charge to checkout radios.

Hi, my name is John. Welcome to FixYa. Plug a external speaker in the back of it and see if you have sound, if so, replace the speaker. Let me know........Thanks for choosing FixYa......John

Hi, my name is John. Welcome to FixYa. All of the handheld,s have very short range. Try to extend the antenna as far as it will go and depending on your location, it should get out a little further..good luck. Thanks for choosing FixYa... John

Usualy when you have that type of problem it is because the battery is shot. As you indicated the charge light shows good but the minute you draw or try to draw current ( power ) by activating the radio the battery does not have enough life left in it.

Any "Rubber ducky" antenna for a CB radio will work. It has to be one that is designed and tuned for the 27 mhz CB band.

Here is one.

You can also just google the phrase "cb bnc rubber ducky" and it will bring up lots of options.

Open up the back of the radio and check the solder joint from the antenna connector. I had same problem and it was this.

the voltage for the charging is 12 volts dc the charger is a 110 volt dc 12 volt to the radio if you lost your charger you can get a aftermarket at any radio shack store just be sure you take the walkie with you when you go so they can match up the rdio plug end.

YOU CAN GET SCHEMATICS FOR THAT MODEL
I JUST LOOKED IT UP FOR YOU........THE BOOK IS SAMS PHOTO FACT...WEBSITE IS

WWW.SAMSWEBSITE.COM

THEY HAVE EVERY CB RADIO EVERY MADE

on the front of the radio,There is a lock and unlock button, push it and watch the screen it will tell you when it is unlocked

In the Cobra line, this is a common DOA (Dead on arrival) issue. You are best to go back to the store and get the same one. If it isnt going off Channel 1 then that is definitely the issue.

Hi,

To my knowledge, it is positive. To confirm, pls look closely at the markings beneath the DC power jack.

Hope this be of initial help/idea. Pls post back how things turned up or should you need additional information.

Good luck and kind regards.

Thank you for using FixYa.

The inner screws also need to be removed after you get the back panel off. Also, the antenna is connected with a nut to the case, and the antenna has a wire soldered to the board. They are kid of a trick to get into, but not impossible. Good Luck.
Ed
NC Electronic
Mills, Wyoming

A manual link is at the bottom of this entry. Troubleshoot the problems you've described: Meter Not Working: The needle moving slightly to the right when you key the mic could be due to incorrect calibration. Make sure to recalibrate the meter according to the manual instructions. If you calibrated it differently, that might cause the needle to go against the right side of the meter. Recalibrating the meter should resolve this issue. Meter Light Problems: If the meter light isn't working, consider replacing the LED. Sometimes, a burnt signal meter light can occur. Replacing the LED should fix this. SWR Meter Not Working: Incorrect SWR calibration or bumping the calibrated knob might cause the SWR meter to malfunction. To check the SWR meter: Turn on the SWR calibrate knob until it keys up all the way at the end. Switch to SWR mode and key the mic. If the needle barely moves, turn down the Dynamike knob. Finally, switch back to S/RF mode. No Receiving Audio: If you're not receiving audio, check the following: Ensure the squelch knob is adjusted correctly. Start with the knob counterclockwise and turn it slowly clockwise until white noise stops. Verify that the microphone is working properly. You can try a different mic to rule out any mic-related issues. Make sure the radio is on the correct channel for transmitting and receiving. ========================================== Calibrating the SWR (Standing Wave Ratio) meter on your Cobra Classic 29zLtd CB radio is essential for optimal antenna performance. Follow these steps to calibrate it properly: Prepare the Setup: Park your vehicle at least 20 feet away from trees and buildings. Close all doors, hood, and trunk. Choose the Channel: Select the channel you want to check. It's recommended to test on channels 1, 20, and 40. SWR Calibration: On the radio, press the SWR/CAL button until the display shows "CAL." While pressing the transmit button on the microphone, turn the SWR CAL knob (the last knob on the right) until the meter needle aligns with the "CAL" mark. Release the transmit button. Switch to SWR Mode: Push the SWR/CAL button again until the display shows "SWR." Read the SWR: Press the transmit button on the microphone. Observe the SWR reading on the top scale of the meter. Ideally, the SWR should be below 3. Lower values are better. Remember that SWR is a measure of antenna performance, and poor SWR can be caused by the antenna, antenna cable, or installation. Adjust the antenna length to achieve similar SWR readings on channels 1 and 40 while keeping it below 3. Most antennas are adjustable; refer to the manufacturer's instructions for specific adjustments. cobra-29ltdclassic-cb-radio-user-manual.pdf (roadtrucker.com) MANUAL

See page 11 of user manual MRHH600B_ENG_MANL_REV_01522_NO_SEATOW.pdf (shopify.com)

Question edited for clarity and translated into 'Adult'. Question moved from Cellphone category. https://www.google.com/search?q=cobra+rx385+no+audio https://www.google.com/search?q=Cobra+rx385 ..

There appears to be help here and that forum is the best place to ask. It is a Post Factory modification according to this.

WTB cobra 148 gtl side mic

WorldwideDX Radio Forum https://www.worldwidedx.com > threads > wtb-cobra-... Feb 27, 2019 - 148 GTL side-mic uses 5 pin mic receptacle. If the radio in question is a side mic and has a 4-pin receptacle, then it was put in post-factory ... Cobra 148 GTL Malaysia.. side mic?? Should I buy? Aug 13, 2018 148gtl blown d44 and mic Jack conversion - WorldwideDX Mar 1, 2018 Old school Cobra 148GTL.... ' WorldwideDX Radio Forum May 13, 2019 Cobra 148gtl Basket case! ' WorldwideDX Radio Forum May 7, 2018 More results from www.worldwidedx.com https://www.google.com/search?q=Cobra+148+GTL+side+mike+jack ..