Stating the obvious?

Fill in the gaps in the following sequence of letters and tell us what the missing ones have in common:

B, F, G, I, L, N, D, I, U, G, P, S, _, F, S, C, _, E, _, L, L, M, P, _, _, B, R

The answer will be published in the next edition of ON AIR!. Please send your solutions to This e-mail address is being protected from spambots. You need JavaScript enabled to view it . All entries must be received by 30 April 2012. The first correct answer drawn at random after this date will win a Helios Powermonkey portable charger. Good luck!

And the winner is …

Only two people sent in the correct answer to our last puzzle ‘Emergency Exit’, which was 7 minutes. Please visit our dedicated puzzles page for the full solution. Congratulations to one of our most regular players, Peter Douglas of Northern Lighthouse Board, who wins the Powermonkey.