>No problem to send sub channel text files or text (dchat/d-rats etc) >simultaneously during voice transmission if you include that as slow >speed data (I do). >Just any file transfer or that requiring target feedback error >correction will be corrupted during simultaneous voice transmission.
Exactly. The marketing folks say you can do simultaneous voice and data, which technically on one data stream, you can. The field folks interpret that to mean they can carry one a conversation with anyone in voice while at the same time, seamlessly sending data hither and yon. The reality is that it doesn't work that way. What I'm seeing happen is users bought the radio thinking that they could do the former, tried to do things with it and discovered the inherit limitations, and we're already seeing folks frustrated and selling the gear because it doesn't really do what it 'sounded like' it would do. The laws of physics still apply to Dstar. There is only one RF path via the repeater, and while that path simultaneously supports voice and data packets, it is not as versatile as two independent systems (i.e. two RF paths vs. one). Only one user at a time can transmit simultaneous voice and data, the other users must wait their turn. If I'm transferring a data file to someone, having a third party jump in on voice trashes my transfer. 73 Daron N7HQR
