Question about Motorola MH230R Two Way Radio

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Mh230r Bought new 4 years ago a pair of Motorola MH230R. One unit works fine, transmits to the other unit perfectly. The second one does not transmit regularly... it is spurradic and ocasionally pushing the MENU button will allow for transmission of voice signal.

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Take the radios back to a very basic setting with all special features turned off. If the radios have a Qt filter check to see it is turned off, and set your Code to zero (off) on both units. Also, check to see your battery is good in both units. Trade the battery with a known good radio to see if the problem moves to the other radio, is a simple test.

Posted on Sep 10, 2017


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SOURCE: One way comm only

swap batteries if does not work this unit should need repair or replace, display blinking can be produced for power failure ( battery, contacts, circuits) or can be a controller issue.

Posted on Feb 14, 2008



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SOURCE: T5420 unable to transmit or receive. Please help!

Here is a link to the T5000-T5500 user manual. ''

From what you have stated, I can discern the radios will power up. You might try setting your interference eliminators to zero (off) to see if you are able to transmit at all.

You do not mention if you are using AA batteries or rechargeables. Either way a fresh set of charged batteries would be best for a test. It is clear you were getting power. However, it does take more energy to transmit than to receive. If your batteries are low or bad, pressing the PTT could us all the energy the radio has, and yet not transmit to the other units.

You might also check you VOX settings if any and be certain they are turned off.

It is not likely 4 radios would fail all at the same time. So it is probably a programming problem. Hope the user manual helps you find the solution.

Posted on Aug 24, 2008



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SOURCE: 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.

Posted on Sep 07, 2008



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SOURCE: T5420 unable to transmit or receive. Please help!

Here is a link to the user manual:

This unit does not have a reset button. While troubleshooting you might check the batteries. Be certain they are in correctly and the contacts are free of corrosion. You can use a pencil eraser to clean the contacts.

Walk through all the programming instructions in the manual, double checking both the frequency and interference eliminator codes. A quick setting back to zero on the code would alleviate any problem with that section of the radio.

As far as your "paging" this operates on the same frequency and code as the rest of the radio. If the radios are not working correctly in this relm, the paging will not work either.

Posted on Apr 24, 2009



  • 1658 Answers

SOURCE: Can Receive but not Transmit

1) Double check your interference code eliminator and the Qt filter. Make certain they are all set identical.

2) If you are still having trouble, shut off the Qt filter.

3) Then if you still have trouble shut off the code. (Off is sometimes "zero" or "n" for no.)

4) If the above steps do not help you have either a defective radio, or a bad battery. Switch the batteries out of the working units to the non-working and see if the problem switches to the other units. If so, replace the battery packs. (Note: it takes more battery power to transmit, so the problem would first show up in the transmit area.)

Best regards.

Posted on Nov 10, 2009

Testimonial: "Response from this site is almost immediate! Will try it out & respond asap ... although I must say I dont understand those techie terms:{ TQ anyway!"

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Download from here:

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Just bought motorola 4 Talkabout MH230R they are working fine except for one which is only receiving the voice and not transmitting anything. I tried Ringing other Walkie Talkie and thats not working and...

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Your radio is possible stuck in transmit, or has an internal issue. If you can get it into programming mode, check your programming. Also you might try trading the battery with a known good unit to see if it is simply a battery issue.

Here's a link to the user guide: Choose your model from the pulldown.

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Mh230r wont turn on

buy a new battery

if not :
these are one-way radios. no service, no spareparts. just trough away and buy new

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