This is a recording of the
last Concorde flight, in contact with 'Speedbird London'. (2003
on VHF by Alan from HFMonitor UK)
British Airways verified in 1985 with this friendly letter...
...and sent this station and service descrption along (both:
rb)
------------------------------------------------------------
Callsigns:
Speedbird
Frequencies Voice:
3481
3497
5535
5610
6568
8921
10072
11333
13333
13342
17922
21946