8136 (actually 8135.99) CW Monday, 7 Nov 05 Unid station using M8 3-message format joined in progress at 0716 UTC. Usual Cuban cut number substitution. 2nd message started with callup IWIMA x5 = = . 3rd message started with GDDNA x5 = = at 0725. Ended "AR AR AR SK SK SK" like old M8, not new M8a, at 0736, and gone. -hugh