For example this years Doeberl Cup was ready to broadcast the top 6 games live, until we discovered that the venue didn't have net access. The Sydney International Open had bigger difficulties, as despite having net access, they struggled to even get 1 game going.
However it isn't impossible to do, as both the 2006-07 Australian Open, and the 2007 Australian Junior were able to broadcast multiple games live to the net.
Based on my experience at the Australian Open you probably need the following things to make it happen.
- Equipment that you know physically works (DGT Boards, power supplies)
- The right set of connectors and cables
- The correct computer equipment and software for net broadcasting
- People with the right technical smarts to trouble shoot problems as they arise.
However, when talking to Brian Jones after the event, he also criticized the "old" DGT technology. The reliance on serial connectors rather than USB plugs made the task of setting up more difficult. Now DGT do produce a USB version of their board, but it is still quite expensive to buy.
But there may be a cheaper alternative. While looking at the Closetgrandmaster blog I saw a story on USB chess boards. The link to the post is here. Visiting the actual website I was surprised to find the cost of the USB chess board is only $45(US), which is amazingly cheap. What I couldn't find were the technical specifications for the device, including board and piece size. Nonetheless it does look promising, both in terms of price, and possibly hackability.