Setup : Nemerix NJ-1030 based iBlue. The SiRFstarII based Emtac Trine receivers and SiRFstarIII based Globalsat BT-338 receivers with v3.1.1 firmware could not get a fix on PRN126.
Time : data logged over 100 minutes with 6000+ measurements
Comments : EGNOS was officially launched a few weeks ago as announced on the ESA website with PRN126 being used to broadcast the full range of corrections. Clearly time for some more testing after PRN120 and PRN124 in April. Bad news, I couldn't get my SiRFstarIII v3.1 based receivers to get a SBAS fix on PRN126, it's possible a firmware upgrade will be needed. I did try the Garmin 60Cx units that recently got upgraded to v3.2, but they do not allow for PRN selection and locked on PRN120 (Garmin #33). The NemeriX based receivers locked on PRN126 without a problem though so I used them for a with/without comparison.
Items of note
No SBAS lock on PRN 126 for the SiRFstarIII v3.1 receivers
SPS accuracy was not quite as good as in April at 5.30 meters, well within the 10 meters one can expect
The corrections sent over PRN126 do not generate any improvement in accuracy, quite the contrary actually, with absolute accuracy going from 10 meters to 14 meters
Screenshots Nemerix - SPS
Nemerix - EGNOS - PRN126
Preliminary Conclusion for PRN 126 As could be expected in light of previous testing and feedback in the forums about WAAS, in spite of its official launch, EGNOS still has no positive impact on accuracy, at least on a consumer receiver like the NemeriX based iBlue. More cause for concern, as it seems the current generation of SiRFstarIII receivers cannot get an SBAS fix on PRN 126, so even though there is likely no accuracy improvement to expect, some users may be disappointed not to be able to experiment.
If you have questions or comments, you can use this thread of the forums