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Re: Motorola T5420 Transmit Problem
Here are some troubleshooting thoughts:
1. Is your battery indicator showing at least 2-3 bars? (Battery Note: Your rechargeable batteries may fail due to setting without use for a long period of time. They need replaced every 12-14 months usually. A good tip is to charge them once a month to keep the chemical in the battery active.)
2. Check to see your Qt noise filter is shut off. Refer to page 22 of the owners manual. It is possible you have some radios set to Y and others to N. To assure good communications you should set all of them to N.
3. With your radios set to interference code zero, place your radios one at a time in scan mode, while you transmit/talk on one individual radio. See if any of the radios receive. Do this with each radio individually to see if you are transmitting at all. NOTE: This test will determine if you have any ability to transmit. If you do not receive any sound on the 3 radios setting in scan mode, the individual radio you are testing will not transmit.
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Since you say the frequency is set the same, you possibly have the code set differently. Check your interference eliminator code. It must be set the same on all radios. For basic operation turn the code off (zero).
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.)
Low/Bad battery beep most likely. Try switching batteries to the problem radio and see if the problem goes away. If so, replace the batteries. You might also check the battery contacts both in/on the radio and the battery. Clean with a pencil eraser if necessary.
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.
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.
Here is a link to the T5000-T5500 user manual. 'http://www.motorola.com/mdirect/manuals/T50-T55_UserGuide.pdf'
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.