Previous studies have suggested a lack of robustness over the Euro-Atlantic sector in the extratropical teleconnection response to ENSO. We use a simple AGCM to show that during the 20 years before and after the late 1970's, the ENSO signal leaving the tropics has the character of a wave train that is similar to the PNA, but is much stronger and penetrates further poleward in the post 1970s period. We also find that the synchronous extratropically-forced model response is almost the reverse in the post- compared to the pre-late 1970s period. We argue that the change in the signal leaving the tropics is due to the sensitivity of the tropically-forced signal to changes in the spatial pattern of the tropical forcing. The extent to which the extratropically-forced response is itself dependent on the tropical forcing, or simply the result of chance, is not clear.