Duplex=1 in rpt.conf is supposed to do that what you want.  That is, with a simplex node a signal from another node will not key the local node if there is a signal on it's receiver. 

On the other hand a remote base is supposed to give TX priority to the linked node. So a signal from the other node will key the local node even when there is a signal on it’s receiver. 

You don’t have the remote base mode set by chance, do you?

--
Tim
:wq

On Feb 20, 2015, at 7:22 PM, Mark Johnston <markjohnston73@gmail.com> wrote:

Hello, 

Does anyone know a/the setting to prevent TX while a local station is transmitting - example

between network traffic, being able to key up and enter a command without being walked on, assuming one gets into the node before the remote station transmits of course.

Tried changing usbradio.conf duplex = 0 

did not help -

rpt.conf is set to duplex = 1

Thanks,

Mark KC7DMF

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