You might try www.antarctica.ac.uk/
which the website of BAS. You may be able to track down a techy person who can answer your question. Be advised though that these folks have a heavy workload in keeping the whole operation in Antarctica running smoothly and may not have time to respond to ad hoc queries, even if they feel inclined to do so. Paul has much more recent experience than I have in matters Antarctic and anyway, I only drove dogs!