Trouble sending IR command to rc curtains

OK, I did some extra analysis on the signal and came up with the following 'extrapolated' timings.

Replace the timings in the erod signal as follows:
(replace the first value with the second, such that the only timings are 850 and 290 in the signal)

948 -->	850
184	290
948	850
184	290
376	290
752	850
952	850
180	290
380	290
752	850
380	290
752	850
948	850
160	290
400	290
752	850
384	290
748	850
380	290
752	850
380	290
748	850
384 -->	290

Again try all of the frequencies.
If that doesn't work, then I suggest you get a 56kHz IRreceiver, which is my best guess,for you, at this stage.

PS: it looks like I left a comma at the start of the erod signal last time (but you seem to have removed it which was correct)