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Kevin White Posted on Jul 07, 2018

One radio is fine the other radio will not transmit. The power mode is flashing and no icon in top left screen and not showing two small x on mid right side screen. I have my manual misplaced. Cobra Li 7200 series

5 Related Answers

Anonymous

  • 1 Answer
  • Posted on Jan 14, 2008

SOURCE: Long range mode

we bought a cobra hl-200p its says 2mile range but it doest mit the standard range for about 50 feet we can no longer transmit and when we set to max range we only hear loud static can you help us on this problem? tnx we only have 2days warranty

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Anonymous

  • 250 Answers
  • Posted on Jul 21, 2008

SOURCE: transmitting

Hello lstimpson,

You may have the CTCSS privacy code function enabled on one radio and not on the other. This function keeps your radio's received muted unless it receives a signal from another radio using the same privacy code. If you have Privacy Codes set for radio A but not for radio B you will still be able to transmit from A to B but when you transmit on radio B your signal will not be heard on radio A.

Make sure that both radios are set to the same privacy code or that the function is turned off on both radios.

Best Regards,
Ken
"Go Ahead. Use Us."

Anonymous

  • 123 Answers
  • Posted on Jan 23, 2009

SOURCE: Midland GTX800 "X-Tra Talk" 2-way radios will not transmit

Are you sure that the batteries are running well?
Try using alkaline batteries just for testing.

Anonymous

  • 13 Answers
  • Posted on Mar 27, 2009

SOURCE: What's the Cobra LI-7700 wx two way radio?

The Cobra Li-7700 may have been a special production for a big box store (walmart). Usually these are same radio in the series Li-7000, Li-7200,Li-7020.

Cobra has just released it's new models for 2009. The CXR Series with Lithium-ion Batteries.
They include the CXR920, 900, 800, 700, 400 and CXR90 two way radios.

Currently available at HiTechWireless.com

Anonymous

  • 14 Answers
  • Posted on Jul 24, 2009

SOURCE: Constant RX mode on cobra microtalk PR3850WX

Sounds like the radio was subjected to electrostatic discharge. If you have your manual, and it describes a way to do a "master reset" on the radio, follow the instructions. This usually involves pushing down on one key while turning the radio on. Otherwise you have to find a licensed dealer for factory service, as there is no way to repair the radio yourself. The use of surface mount technology still confuses many Techs unless they have been to a company's two or three week seminars.

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Every time I press the talk button the radios show low battery icon and I'm not able to transmit on either radio. How can I rectify this problem?

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Are you SURE that your batteries are up to snuff? I.E. when they have a light current load on them they are ok but as soon as you try to increase that current load they die off quickly. With two-way radios, the actual current drain depends on whether you are transmitting or in standby (receive) mode. Transmitting requires significantly more current than standby mode. So, I would look at what kind of batteries you are using. If they are a good name brand alkaline, check to see if they measure close to 1.5 volts with a voltmeter or check them with a battery tester to ensure they are good. If they are ni-cad or ni-mh rechargeable batteries, make sure they are rated at least 1200 mah (milliamp hour). I use Sanyo eneloop rechargeable batteries. They last a long time for me. One other thing, make sure your battery compartment is clean and there is no corrosion on the contacts the batteries are placed into.

Hope this helps,
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You have a bad or poorly charged battery. Transmitting takes more energy than receiving, so it is the first to fail.
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Receive fine. Transmit problems.

Hello breaker19261,

I believe that you have a malfunction in you transmitter circuitry. I would first try to determine which stage in the transmit section is defective. I would start looking at the section that is more closely connected to the power supply and work from there. If you do not have a background in electronics, I would suggest that you get someone who does to do this for you. They will be able to track this problem down for you. Since most of the time in these cases I would suspect a faulty capacitor, have them check the DC levels first to see if there is a short or an open circuit.

I hope this helps,

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http://www.electron-age-technologies-llc.com
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Midland GTX800 "X-Tra Talk" 2-way radios will not transmit

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Won't transmit

First I would check the interference code on both radios to see if it is set the same. It is possible you have one set to zero and the other set to another number. This would cause the problem you describe. The interference eliminator is designed to block out transmissions from radios whose settings do not match it.

If all your settings are identical, and you have only 2 radios, it is not possible to tell which one has the problem. You either have one with no transmit or one with no receive. The only way to tell which you have is to get a 3rd radio involved, set to the same settings.
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Model LXT 300 FRS/GMRS RADIO

Hi,

There could be three (3) reasons why the display shows the battery icon at the top left side of the LCD display:
1. weak/undercharge/discharge batteries;
2. dirty/corroded/loose battery contacts/terminals; and/or
3. internal fault with the electronic sensing for battery level/state.

Corrective measures would require:
a. replace/recharge batteries. The rechargeable batteries need at least 12 hours of charging time;
b. clean, scrape, tighten (need to bend a little more towards the battery terminals) the spring/contacts of the battery holder;
c. (on the internal fault) your best bet might be to seek the services of a professional electronic technician since this would need familiarity with electronic components, their circuitry and diagnosis, perhaps a bit of soldering and the use of a DVM.

On the other hand, if the "low" is the "L" icon at the bottom right side of the display, this would indicate that the radio's transmit power setting (H/L - high/low). Transmit power level can only be changed in Channels 1-7 & 15-22. The radio will also auto change to lo power when batteries are weak.To switch to high power, press on the Menu button thrice or till "Pr" icon shows, press on the up/down to select H or L. To save & exit, momentary press the PTT.

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

Good luck and kind regards.
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