Pseudo-semaphore
Pseudo-semaphore is a weird temperament in which the third harmonic does not have a single consistent mapping. If you want to force it into the regular mapping paradigm you have to think of it as a 2.3.3'.7 temperament.
It's called "pseudo-semaphore" because it has the same MOS structure as semaphore, but 49/48 is not tempered out. Perhaps it's better to think of it as superpyth in which the 4/3 generator has been split in half forming a weird interval that's neither 8/7 nor 7/6.
Interval chain
| 204. | 448. | 692. | 936. | 1180. | 224. | 468. | 712. | 956. | 0. | 244. | 488. | 732. | 976. | 20. | 264. | 508. | 752. | 996. |
| 9/8 | 9/7 | 3/2 (flat) | 12/7 | 9/8~8/7 | 3/2 (sharp) | 1/1 | 4/3 (flat) | 7/4~16/9 | 7/6 | 4/3 (sharp) | 14/9 | 16/9 |
MOSes
5-note (LLLLs, proper)
The 5-note MOS is not much use because only one of the two different mappings shows up. You'd be better off using semaphore[5] or superpyth[5] (or 5edo).
| Small ("minor") interval | 224. | 468. | 712. | 956. |
| JI intervals represented | 9/8~8/7 | 3/2 | ||
| Large ("major") interval | 244. | 488. | 732. | 976. |
| JI intervals represented | 4/3 | 7/4~16/9 |
9-note (LLsLsLsLs, improper)
Here's where all the action begins. Note that this nine-note scale contains nine 4/3s and nine 3/2s. The only way this is possible with a single mapping for 3 is an equal temperament, and all of these 4/3s and 3/2s are much more accurate than in 9edo.
| Small ("minor") interval | 20. | 244. | 264. | 488. | 508. | 732. | 752. | 976. |
| JI intervals represented | 7/6 | 4/3 (flat) | 4/3 (sharp) | 14/9 | 7/4~16/9 | |||
| Large ("major") interval | 224. | 448. | 468. | 692. | 712. | 936. | 956. | 1180. |
| JI intervals represented | 9/8~8/7 | 9/7 | 3/2 (flat) | 3/2 (sharp) | 12/7 |