RJR,
The Rev L 4.10 TIU mismatch with my Rev .l hand held remote control 3.10 makes the 263E whistle double. The matched Rev L with the 4.10 does not make it double what so ever. The 3.10 hand held also sets up a run way problem, in the TR mode, every so often, I am beginning to believe this mismatch problem is greater than I once thought. I need to get this Rev .l, 3.10 up to GGG for a full upgrade to the latest revision, once the Christmas layout comes down. After it comes back I will send the Rev L, 4.10 for the same upgrading. I definitely need to get all this DCS gear upgraded to the latest revisions, so they all match.
PCRR/Dave