However, my question is - if you are having a Local QSO on TG9 TS2 so only using the one repeater, what happens when somebody somewhere else in the country starts a QSO on UK Wide TG235 TS2. Does this QSO carry on with all the other UK repeaters except yours, leaving you to carry on on TG9?
Yes it does. Once you establish a 'TG9 local' qso, network traffic (as I understand it) is effectively disabled on your repeater and only re-enabled once the local incoming carrier drops.
Going back to your question Eric, you might be asking what happens in the above case - You are on Local TG9 but there is already a conversation going on on TG235 on the 'other' repeaters, when you drop TX and there is no reply within the repeater hang time, do you 'loose' TG9 to TG235. In that case, I don't know the answer.
In general, I'm aware that if a conversation is active on TG235 or TG8, and the repeater (in theory) drops after the hang time, that re-access to TG9 is effectively blocked due to TS2 being in use by the network traffic. It's happened to me on the odd occasion during busy periods, where I've had to wait for a break in the network qso before regaining access to continue with my local one.
I think that by writing out the question on the forum, I've provided the answer myself <smile>.
What I was initially looking for was if one networked TG took priority over the other when TG9 local dropped out. I.E. if there was traffic on TG8 (regional/roaming) would that have priority if there was also traffic on TG235 at the same time. Having posed the question, and thought about it some more, I suppose that wherever the incoming network traffic is originating from, it is of little consequence to the repeater logic and just gets relayed to the output.
Eric - G6FGY