How do you disable the VOX setting on a Talkabout MR350 2 way radios. I wan to use it with a headset, but do not want VOX on.

check your radios settings, this should be available in a menu on the radio... the user manual does not show a setting for non vox operation of the head set, (as this maybe a version difference it may be available in the menu) so if it is not available in the menu with the rest of the settings it is not an option.

From reading through your settings, they appear to be identical. Except, I am not certain what Vox 2 is, or B5 0. If the number 2 beside VOX is a setting, you should set it to off or zero. Otherwise, they appear like they should work. (VOX = voice activation, and when enabled will cause a radio to transmit when it hears a sound, voice, etc.)
If you are using an audio device such as an earpiece or headset, be certain you are plugging it in with the radio turned OFF.
Lack of transmit can also be a sign of a bad battery or bad battery connection. You might try swapping the batteries and see if the problem moves to the other radio.
If these are less than one year old, use the number in your user guide to contact Motorola for a possible warranty replacement.

Best regards.

Likely not compatible. One thing to try is to make certain the transmitting unit is turned OFF when you initially plug in the headset. Sometimes if a headset is plugged into a radio when it is already ON, the headset will appear to be in VOX (voice activated) mode and will not allow the user to receive. Also, if this headset has an inline PTT, it may not be compatible with the radio and you would need to use the PTT on the radio.

If this doesn't work, you would need to use the TalkAbout headset designed for the MR350.

Best regards.

Here is a link to the user guide, reference page 22 for instructions on turning iVOX and VOX on or off: http://www.giantintl.com/ContentManage/manuals/Moto/T65xx.pdf (Double check you do not have the lock symbol showing while trying to change programming.)

Also, another phenomenon which can occur is when you unplug a headset or audio device while the radio is still turned on. This can leave the radio partially in VOX mode. You might try plugging in the device with the radio turned off. Then turn the radio on, use the device in VOX mode. Then shut the radio off and remove the device. See if it clears the radio's sense of having a headset plugged in.

A damaged jack can also cause the same problem.

Best regards.

Here a few thoughts which come to mind.
1. You do not mention whether the radios communicate with the headset no on the radio. I will at this point, assume they do.
2. Be certain to have the radio SHUT OFF when plugging in the audio device.
3. Check your VOX settings. It could be your radio is going into VOX mode.
4. Only use the PTT button on the headset. Do not press the PTT on the radio at any time while using the headset.
5. Check that you have CALL TONES shut off.
6. Lastly, if nothing else works, go back to a basic mode, and set both radios where there are no special features turned on. ie turn off CODE, Qt Filter, VOX, Call Tones, etc.
Here is a link to the manual: http://www.giantintl.com/RadioPDFs/Outdated%20Manuals/T56XX_57XX_User_Manual_E.pdf

Best regards.

you miss to save your last program,after you turn to vox mode you must to save ,or the mode will back to before you change

1) Be certain the radio is shut off when plugging in the audio device.
2) On most units, press the PTT button to turn off the VOX feature.
3) If you are not planning to use VOX. Turn the VOX feature off. Follow the programming instructions which came with the radio.

Hope this helps.

Hands-Free Use With Accessories (VOX)
You can transmit hands-free with the use of optional accessories. Once
VOX is turned on, the radio detects your voice and transmits when you
speak.
1. Turn the radio off and plug the VOX accessory into the accessory
port.
2. Turn the radio on. VOX shows on the display.
3. Adjust the volume appropriately by rotating the volume knob . Lower the volume
before placing the accessory on your head or in your ear.
4. To turn off, simply remove accessory.
Note: There is a short delay between the time you start talking and
when the radio transmits. There is a short delay before the
transmission is completed.

Owners Manual: http://www.motorola.com/mdirect/manuals/SX700_userguide.pdf

You must be using a VOX capable accessory. Generally this is an accessory without an in-line PTT.

We have discussed your dilemma. Check your audio jack hole to be certain nothing is still in the hole. Check to see you have the VOX setting turned to a normal or off setting. Typically the radio will shut off the front speaker when an audio device is plugged into the jack. If the radio senses the device, or a small piece of the plug is stuck in the jack, or the jack is damaged, it will shut off the front speaker.

Since you can hear when using the headphone, it is apparent you have the radios programmed to the same frequency and code settings. This leads us to believe it is not a programming issue, short of the VOX feature, or mic gain. You might double check these settings.

Here is a link to the manual: http://www.usersmanualguide.com/motorola/2-way_radio/t6310

If you are using vox (voice activated transmit) go into the menu and make sure you don't have the VOX setting too high. You should be able to put the headset on... hit the "push to talk" button on the radio and transmit you audio. Turn the other radio on and make sure the radio is "keying" (tx with no auio) then make sure there is audio. If you don't have audio but the radio is transmitting.. you might have the wrong type of plug on your headset for the audio..... there are 2 plugs... 1 for transmit audio....1 for recieve audio. It could be the wrong type of plug for the jack in the radio. Regardless.. the way the headset works is either you push the "push to talk button" onj the radio OR you use the VOX function... with the vox function you just have to talk into the mic to transmit. This is what your headset is designed for. You will have to go into the menu and set up the radio for VOX. If you still have problems follow my directions at the top of this page ( check mic jack and stuff) I think you just have to set the radio up for VOX operation and set the VOX setting. You should be able to push the push to talk button and talk through the mic on the headset. If you don't get any audio that way there is a problem and you should check the jack and plug on the headset.