20 Most Recent Cobra PR4100-2WXVP 2-Way Radio Questions & Answers

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Constant RX mode on Cobra Microtalk Walke Talke

I have the same walkie talkies and on mine I can hold down the mode/lock button and it will come off of the Rx mode. Also, you should be able to press the talk button and it will come off of the Rx mode.
3/15/2019 3:51:21 PM • Cobra... • Answered on Mar 15, 2019
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Misplace users manual

Hi,

You can download a copy of the owners manual from the Cobra site. The file in in this page PR4100-2WXVP. You would need Adobe Acrobat Reader to access the file.

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

Good luck and kind regards.
1/18/2008 2:53:24 AM • Cobra... • Answered on Jan 18, 2008
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Cobra RX385 Two-Way Radio. Why does my walkie-talkie send messages but can't receive any sound.

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 ..
1/1/2024 9:42:37 PM • Cobra Radio... • Answered on Jan 01, 2024
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I have a Cobra 148 GTL side mike jack.

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 ..
12/3/2023 5:48:29 PM • Cobra Radio... • Answered on Dec 03, 2023
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6 wires d-104 white shield blue black red & yellow what color goes to what number 5 pin cobra mobile 148 gtl

Here are the instructions:
  • PIN #1 ~ WHITE
  • PIN #2 ~ SHIELD
  • PIN #3 ~ BLACK
  • PIN #4 ~ BLUE
  • PIN #5 ~ RED YELLOW N/C
I hope this helps!
10/29/2023 6:57:32 AM • Cobra Radio... • Answered on Oct 29, 2023
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I have a Cobra Microtalk walkie talkie, one sends & receives, the other just receives it won't transmit just makes loud noise. What is happening?

8/16/2023 11:51:42 AM • Cobra Radio... • Answered on Aug 16, 2023
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Mods for Cobra 29LX max ?

Manuals in the link tell you how to tune. What kind of 'modifications'? https://www.google.com/search?q=Cobra+29+LX+max+manual ..
8/15/2023 5:37:15 AM • Cobra Radio... • Answered on Aug 15, 2023
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How to wire a Sadelta M3 to a Cobra 29 LTD Classic

I believe to wire a Sadelta M3 microphone to a Cobra 29 LTD Classic CB radio: The Sadelta M3 microphone has four wires: white, shield (bare wire), red, and black. The Cobra 29 LTD Classic CB radio's microphone jack also has four pins: Pin 1 (Audio), Pin 2 (Ground), Pin 3 (Transmit), and Pin 4 (Receive). To wire the Sadelta M3 to the Cobra 29 LTD Classic, you need to connect each wire from the microphone to its corresponding pin on the microphone jack. The white wire carries the audio signal from the microphone's element to the radio, the shield wire provides a ground connection, the red wire activates the radio's transmit function when the microphone is keyed, and the black wire is used for receive audio. Here are the specific steps to follow:
  1. Cut off the existing microphone plug on the Sadelta M3 microphone cord.
  2. Strip about 1/4 inch of insulation from each of the four wires in the Sadelta M3 microphone cord.
  3. Connect the wires to the pins on the microphone jack as follows:
  • White wire to Pin 1 (Audio)
  • Shield (bare wire) to Pin 2 (Ground)
  • Red wire to Pin 3 (Transmit)
  • Black wire to Pin 4 (Receive)
  1. Solder each wire to its corresponding pin on the microphone jack. You may want to use a multimeter to verify that each connection is solid and that there are no shorts or open circuits.
  2. Once you have soldered all the wires, test the microphone by speaking into it and checking that the radio's TX meter moves as you speak. Also, check that you can hear audio through the radio's speaker when receiving signals.
  3. If the microphone is working correctly, use heat shrink tubing or electrical tape to cover the soldered connections and provide strain relief for the wires.
Note that some microphones, including the Sadelta M3, may have additional features such as a built-in amplifier or power supply that require additional wiring.
2/26/2023 11:41:56 PM • Cobra Radio... • Answered on Feb 26, 2023
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Cobra 29 NW LTD Classic won't transmit and no sound but will receive

The power output transistor has probably failed; usual cause is poor connection, excessive SWR or widely out of specification aerial.
2/8/2023 5:55:10 PM • Cobra Radio... • Answered on Feb 08, 2023
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2answers

Where do you find make and model?

La radio Cobra XLR CB es un modelo m?s antiguo, por lo que es posible que no tenga un n?mero de serie. Para averiguar el a?o de producci?n, puede buscar el n?mero de modelo en el sitio web de Cobra o ponerse en contacto con su departamento de servicio al cliente para obtener m?s informaci?n. Adem?s, si planea vender la radio, es posible que desee consultar con una tienda local de electr?nica o radio CB para obtener una estimaci?n de su valor.
1/6/2023 3:08:53 AM • Cobra Radio... • Answered on Jan 06, 2023
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Peak and tune a cb radio

If you don't have the proper equipment to do the job right then don't do it.
12/1/2022 5:53:14 AM • Cobra Radio... • Answered on Dec 01, 2022
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I have a cobra 29lx my back light isn't working and buzzing from speaker

Hi, please update your power source and move your device away from anything that deals with using frequencies like other radios, microwaves, active walkie talkies or antennas. Being close to these things could cause interference with your device leading to the buzzing that you're hearing. Thank you
11/9/2022 12:26:28 AM • Cobra Radio... • Answered on Nov 09, 2022
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I have a cobra 29 LX BT. It turns on but I can't get any of the buttons to work. The dials seem to work but I'm not sure since I don't know much about cb radios. Any help is appreciated.

Hi, Please double check that your device has new batters or is charged up properly. Then, you would need to have a means of testing the device through instructions from a third party like a radio station/center or other organizations that broadcast to devices like your own. To further learn how to use your device, you can peruse it's manual. Thank you.
10/7/2022 7:12:20 PM • Cobra Radio... • Answered on Oct 07, 2022
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I have a 5 pin midland mic and I want to wire to a cobra 2000 gtl

Hi, please start by using the midland mic user manual to understand to how to wire it to your radio device. You can call midland to ask them for the manual if you don't currently have it, and they should be able to email you a copy. Thank you.
10/5/2022 12:16:45 AM • Cobra Radio... • Answered on Oct 05, 2022
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I need to know what type of antenna should I use for a 1993 model cobra 29 LTD Classic . Both mobile and base?

There are a lot of antennas on the market, you need to be wary or some of the cheaper ones because the corrode quickly. Antennas are a very important part of any radio setup and they can make or break your signal. I use this company and I highly recommend them: Sirio Antenne - HOME
8/11/2022 1:16:53 AM • Cobra Radio... • Answered on Aug 11, 2022
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I have a cobra 25 classic. When I hooked up the mic and keyed down it smoked? It done when I put the battery on it

No aerial/poor connection to the aerial will cause the PT to burn up taking the 2A fuse out. If there is no fuse you will have the added delight of repairing the burnt pcboard inside as well as a new power transistor.
7/31/2022 12:32:29 PM • Cobra Radio... • Answered on Jul 31, 2022
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29 wx me st. How can I turn up the 3rd gain inside the radio?

Hi I have a cobra 29ltd crome I can receive but when I key the mic to talk like it use to before in the talk back and the needle doesn't move with I talk in the mic.
5/9/2022 4:23:27 PM • Cobra Radio... • Answered on May 09, 2022
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Cobra 29lx Ohms resistor r56 keeps blowing up

You need to be an electronics engineer to diagnose why a component continually fails. It obviously has too much power or the replacement resister is the wrong value, or a component on either side of it is failed and also needs replacing. Get a quote for repair or put in a warranty claim.https://www.cobra.com/pages/repair-information..
12/18/2021 10:18:41 PM • Cobra Radio... • Answered on Dec 18, 2021
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