Thanks for that.
I have been using it already, although as an FYI, it hasn't been updating correctly for the past few months. You are best to use the RSM website to confirm exact capabilities for each site.
Yeah I did do a cross check with RSM before I posted. They all seem to match up around there.
In all honesty, make the move to Spark Rural Wireless. You'll get much better performance because:
1 - It's 4G, so maximum speeds are several times what 3G is capable of to begin with.
2 - It's 20MHz bandwidth dedicated to data. Spark only have data on this band, unlike the Vodafone 3G you're currently connected to which has to do both voice and data. (But admittedly they have 15MHz + 25MHz on the tower you are on!)
3 - Being 700MHz, only newer handsets can connect to this band. So for a while at least, congestion (even at holiday times), should be less of an issue.