Currently playing back my overnight recording, signal on 11725 as of 0810 was fair at best. I was surprised at how good it was 0600-0800 UTC on 13730, usually I have nothing to work with when I play back that part. You should check that out next week (assuming they're still on that schedule - midseason changes tend to happen on Saturdays UTC and I've missed parts of RNZ Saturday Night Requests when I failed to check for such a change beforehand). If I get it good, you should get it very well.
UPDATE the signal reached good levels by the end of the 11725 broadcast (0958 UTC). Meaning they were good for the last half hour or so, SIO 344.