| 100 | Adds 3.5mm female to female adapter |
| 1A7 | ISO 17025 Compliant Calibration |
| 1A7 | ISO 17025 compliant calibration |
| 200 | Adds 3.5mm male to male adapter |
| 300 | Adds 3.5mm female to male adapter |
| 400 | Add four 3.5mm to Type-N 50-Ohm adapters |
| 500 | Add four 3.5mm to 7mm adapters |
| A6J | ANSI Z540 compliant calibration |
| FEM | Female 3.5mm Standards Only |
| R-50C-011-3 | Agilent Calibration - 3 years |
| R-50C-011-5 | Agilent Calibration - 5 years |
| R-50C-016-3 | ISO 17025 Compliant Calibration - 3 years |
| R-50C-016-5 | ISO 17025 Compliant Calibration - 5 years |
| R-50C-021-3 | ANSI Z540-1-1994 Calibration - 3 years |
| R-50C-021-5 | ANSI Z540-1-1994 Calibration - 5 years |
| R-51B-001-3C | 1 year Return-to-Agilent warranty extended to 3 years |
| R-51B-001-C | 1 year Return-to-Agilent warranty |
| UK6 | Commercial calibration certificate with test data |