I charged the batteries and they turn on and seem to function through the menu fine but when I push the ptt the other radio doesn't receive the message. they both seem to have the same problem. They are both set on the same channel and subchannel and all menu options are the same on each radio.
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It is called battery save. You push the push to talk about 3-5 seconds and all the radios will "wake up". On most models, it can be turned off, but battery life (time before you need to recharge) is shortened.
This is the sign of a low or dead battery. It takes more energy to transmit than to receive. So pressing the PTT to transmit will generally shut the radio off when you have a low, bad or poorly charged battery.
Clean the battery contacts on the battery, radio and charger with a pencil eraser and try charging once again. Be certain your radio is turned off during charging. Sometimes it will take 2-3 attempts to charge battery which has gotten too low. Exposure to cold conditions in shipping can sometime cause this too.
If these solutions do not solve the problem, try charging the battery in another radio to see if the charge capability of this radio is compromised.
If none of these solutions solve your problem try getting the battery replaced under warranty at the point of purchase. It will have a 6 month or 1 year warranty.
The battery is bad or not charged. Check your charger and charger/battery connection. Clean all contacts with a pencil eraser and try charging again. With a new battery it may take up to 3 charge cycles to fully charge your battery.
Transmit issues can be related to a bad or poorly charged battery. It takes more energy to transmit than to receive. Try swapping batteries with a known good radio to see if it solves the problem. Clean your battery contacts with a pencil eraser and if needed replace the battery pack.
It takes a lot more power to transmit than it does to receive. So it is possible to listen but not be able to talk. Make sure that the batteries are charged and that the batteries are holding a charge. When batteries begin to fail they won't hold a charge for long at all.
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.
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.
It could be a low battery. Does the screen go completely blank when you attempt to transmit? Two way radios draw a lot more power when transmitting then when receiving so a low battery might cause the radio to cut out when you press the Push-to-Talk and then the radios might appear to turn back on when you release the PTT. If this behavior persists even after charging the battery then the battery or charger (or both) might be defective.
If the battery isn't the issue then the radio could be programmed incorrectly. Does the problem occur on all channels or just one? The Kenwood ProTalk requires dealer programming with a software kit to set the frequencies for each channel. A channel that is programmed for an out of bounds frequencies would generate an error when the PTT is pressed. You might need to have the programming checked out by your local Kenwood Two-Way radio shop.
It could be battery / power issue. Two-way radios draw much more power when transmitting then receiving. If the batteries are weak the radio might work perfectly fine on receive and then cut-out when you depress the Push-To-Talk.