We have 4 T8500 - only one can talk, the other 3 only recieve.
They are all set to the same channel and same interferance eliminator code. I have tried with the QT on and off, no difference. I have tried with the interferance eliminator code set to 0, no difference. Batteries are charged, connecting fine etc. I am at a loss...
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Re: We have 4 T8500 - only one can talk, the other 3 only...
Can you tell if the radio is actually transmitting? Is there any sound on the transmitting radio or a light inditcating that it is indeed transmitting? If not maybe the PTT button is malfunctioning. Try to use a microphone plugged into the accessory jack and see if it works. Another option is if you have a radio scanner, search the frequency range while transmitting and see if you pick up that open carrier.
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Your code (PL code, interference eliminator, quiet call) is not programmed the same on both radios. The Cobra appears to be set to open squelch (no code). Set your Motorola code setting to zero (off). This should solve the problem.
Try checking the vibra call settings for your vibrating issue. Also, as for the radios not communicating with one another you should check the programming of the frequency, interference eliminator and the Qt filter. All radios must be identical to work together.
Check your interference eliminator code, and also your Qt filter. Try setting both to the off position (zero) and see if you have the same problem. Another thing to check would be your batteries and battery contacts.
To change channel & code press talk and monitor
while turning radio on.
Radio will speak current channel.
Release both talk and monitor.
Press talk to change to next channel or press
monitor to keep current channel.
Press monitor when desired channel is selected, radio will speak current code.
Press talk to change to next code or press monitor
to keep current code.
Press talk to change code as desired then press
monitor when done.
Will speak channel and code selected.
Set all units in same manner to
It is likely you have the Interference Eliminator Code (aka Private Line or PL) set differently among the 4 radios. Your T8500 has 22 built in frequencies (noted by the BIG number on your screen) and 121 selectable PL codes (noted by the small number below the BIG number on your screen). All four of your radios must match on both numbers to communicate.
Use the menu button until the code starts to flash. Use the + or - button to select the code. Once you have selected the code you can press the PTT button to lock it in; or you can press the menu button to continue programming other features.
Have you checked the QT filter? The T5950 have an addtional interference filter called the QT filter. It filters out other radios and allows Motorola radios to speak only to other Motorola radios with the filter. Check the QT setting on both radios by pushing the menu button 6 times, the QT setting will show. If it shows a straight line on the display the filter is not on. Now push the + button (beside the menu button), to turn the QT filter on (a Y will show on the screen when on) or the - button to turn it off (the line will show when filter is off). The radios have to match all channels and all filters to talk to each other.