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TP9900 - No DMR Talkaround?

ATK3

Member
Joined
May 28, 2024
Messages
49
Has anyone been able to get talkaround to work on a DMR channel on a TP9900? Its working fine on analogue conventional and P25 conventional channels, however, on a DMR channel, pressing the talkaround key or menu button flashes a message "Cannot activate talkaround" and gives the bonk tone. The "Permit repeater talkaround on this channel" checkbox under Channel Setup -> Channels -> Advanced has no impact on this behaviour (and isn't mentioned once in the help file), so I'm assuming this is just another case of sloppy implementation of the DMR side of the firmware. Has anyone else encountered this?

(Terminal v3.6.2.17 and Firmware version v3.06.11)
 

Obsgr1

Member
Joined
Aug 8, 2025
Messages
5
From the help file:
Permit Repeater Talkaround on this Channel
Sets whether or not the radio user can use a function key set to to enable repeater talkaround on the channel. This field is only available if the channel’s Profile is a conventional.
In conventional operation, what channel the radio is tuned to is determined by the radio itself. Compare with trunking. type (the Profile Type is P25 (project 25) is the project name and number given to the joint development project to develop a public safety digital radio standard. Conventional, Analog Conv, Dual Mode, or Terminal Repeater). Select or clear the check box.

• Selected: repeater talkaround is available on the channel.
• Cleared: the radio will sound an invalid tone and display a message if repeater talkaround is attempted on this channel.
 

ATK3

Member
Joined
May 28, 2024
Messages
49
From the help file:
Permit Repeater Talkaround on this Channel
Sets whether or not the radio user can use a function key set to to enable repeater talkaround on the channel. This field is only available if the channel’s Profile is a conventional.
In conventional operation, what channel the radio is tuned to is determined by the radio itself. Compare with trunking. type (the Profile Type is P25 (project 25) is the project name and number given to the joint development project to develop a public safety digital radio standard. Conventional, Analog Conv, Dual Mode, or Terminal Repeater). Select or clear the check box.

• Selected: repeater talkaround is available on the channel.
• Cleared: the radio will sound an invalid tone and display a message if repeater talkaround is attempted on this channel.
As stated, Permit Repeater Talkaround has no impact on the radio's behaviour. It functions as-expected on P25 and analogue conventional channels, but this seems to be a bug relating specifically to DMR T2 talkaround.
 

Obsgr1

Member
Joined
Aug 8, 2025
Messages
5
It could also be a bug in the repeater as well. Do you know if the repeater has talkaround enabled? Certain repeaters have this as a function. You could try and program your radio with the Base TX in simplex and see if it works. If it doesn't work, then Talkaround may not be functional. The radio basically becomes the repeater.. Try reaching out to Tait to see if they know that the bug exists or if there is a work around for this function.
 

ATK3

Member
Joined
May 28, 2024
Messages
49
It could also be a bug in the repeater as well. Do you know if the repeater has talkaround enabled? Certain repeaters have this as a function. You could try and program your radio with the Base TX in simplex and see if it works. If it doesn't work, then Talkaround may not be functional. The radio basically becomes the repeater.. Try reaching out to Tait to see if they know that the bug exists or if there is a work around for this function.
Talkaround isn't infrastructure-dependent, its entirely subscriber-side. Usually all it does is transmit on your programmed receive frequency (split PL/NAC systems sometimes give you options on how those codes get applied, again, radio-dependent).

The one thing I have noticed is that unless a channel is programmed as simplex on the TP9900, the dual-slot direct mode dropdown is always greyed out. This is not impacted by the Allow Talkaround checkbox, so I'm at this point assuming that this is just a bug either in Terminal (and thus the generated codeplug), or in the firmware. I'll touch base with my dealer, and if they can't resolve it, I'll forward it up to Tait support.

EDIT: If this is a bug, that's certainly a little frustrating. I know I'm running the latest version of the firmware and terminal, and talkaround is a pretty basic function. This in combination with a bunch of other software issues I've encountered (especially coming from how good the VP8000 is) causes me some concern.
 
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