John, Per your request a few weeks ago, at least as of a few years ago, the boneyard at Aviation Warehouse at El Mirage Dry Lake had a pile of MN-26 Bendix receivers, although I don't know if any of them were the -LB model. Some are seen at time hack 0900 in this video: https://www.youtube.com/watch?v=3alvBzrRyfk Geoff WB6NVH Monterey