| No | Feature |
|---|---|
| 1 | Wide 18 GHz calibration range, useful for mid-band VNAs. |
| 2 | Well-characterized phase error and return loss → precise SOLT calibration. |
| 3 | Robust mechanical design with durable N-type connectors. |
| 4 | Thru delay known → helpful for de-embedding or port extension. |
