12456H has ~85% strength but 0% quality.
12483H has 0% strength and 0% quality.
Sky digital transponders work fine however.
12670H, 12295H, 12420H, 12518H, 12707H and 12734H are all ~85% strength and 100% quality
I have a Transonic TWH-S1 receiver.
If you need any more information, just ask and I'll try to provide it.