SBS transponders in Warbirds

Hi Guys,

I was just checking the live military SBS mode, when i stumbled on something strange…

Usually there are the military aircraft on it, but i found out today that Spitfires are now carrying SBS transponders… Is this a new thing? or is this something that was known but i didn’t know yet. But here are below the logs if someone is interested?

G-MXVI
402DCD G-MXVI GMXVI 2010-08-20 17:52 Spitfire United Kingdom — Thatcham, Berkshire, GB 2010-08-20 16:52:43
402DCD G-MXVI GMXVI 2010-08-20 17:50 Spitfire United Kingdom — Slough,SL2..GB 2010-08-20 16:50:54
402DCD G-MXVI GMXVI 2010-08-20 17:50 Spitfire United Kingdom — Aldershot, GB 2010-08-20 16:50:44
402DCD G-MXVI GMXVI 2010-08-20 18:13 Spitfire United Kingdom — Dulwich London, GB 2010-08-20 17:13:48
402DCD G-MXVI GMXVI 2010-08-20 18:10 Spitfire United Kingdom — Oxfordshire, GB 2010-08-20 17:10:56

G-MKVB
402E71 G-MKVB GMKVB 2010-08-20 16:22 Spitfire United Kingdom — Aldershot, GB 2010-08-20 15:22:43
402E71 G-MKVB GMKVB 2010-08-20 16:20 Spitfire United Kingdom — Brighton, GB 2010-08-20 15:20:20
402E71 G-MKVB GMKVB 2010-08-20 16:01 Spitfire United Kingdom — Dulwich London, GB 2010-08-20 15:01:07
402E71 G-MKVB GMKVB 2010-08-20 15:00 Spitfire United Kingdom — Nr EGLL, GB 2010-08-20 15:00:00
402E71 G-MKVB GMKVB 2010-08-20 15:57 Spitfire United Kingdom — Aldershot, GB 2010-08-20 14:57:34
402E71 G-MKVB GMKVB 2010-08-20 15:52 Spitfire United Kingdom — Stevenage, GB 2010-08-20 14:52:29
402E71 G-MKVB GMKVB 2010-08-20 15:50 Spitfire United Kingdom — Southend on Sea, GB 2010-08-20 14:50:25
402E71 G-MKVB GMKVB 2010-08-20 15:46 Spitfire United Kingdom — Brentwood Essex, UK 2010-08-20 14:46:12
402E71 G-MKVB GMKVB 2010-08-20 15:46 Spitfire United Kingdom — Colchester, GB 2010-08-20 14:46:10
402E71 G-MKVB GMKVB 2010-08-20 15:45 Spitfire United Kingdom — Stevenage, GB 2010-08-20 14:45:34
402E71 G-MKVB GMKVB 2010-08-20 15:45 Spitfire United Kingdom — Whittlesea,Cambs>GB 2010-08-20 14:45:02
402E71 G-MKVB GMKVB 2010-08-20 15:45 Spitfire United Kingdom — Bury St Edmunds, GB 2010-08-20 14:45:00
402E71 G-MKVB GMKVB 2010-08-20 15:44 Spitfire United Kingdom — MILDENHALL ABERDEEN, GB 2010-08-20 14:44:58
402E71 G-MKVB GMKVB 2010-08-20 15:44 Spitfire United Kingdom — Mildenhall Suffolk, GB 2010-08-20 14:44:47

AB910
43C394 AB910 AB910 2010-08-20 15:18 Spitfire United Kingdom BOBMF Nr EGLL, GB 2010-08-20 14:18:07
43C394 AB910 AB910 2010-08-20 15:17 Spitfire United Kingdom BOBMF Dulwich London, GB 2010-08-20 14:17:26
43C394 AB910 AB910 2010-08-20 15:14 Spitfire United Kingdom BOBMF Aldershot, GB 2010-08-20 14:14:42