001 | High Stability Frequency Reference |
1BQ | Military Standard 45662A Calibration |
350 | 50 Ohm System |
375 | 75 Ohm System |
907 | Front Handle Kit |
908 | Rack Flange Kit for Use without Handles |
909 | Front Handle & Rack Flange Kit |
910 | Additional operating and service manual |
UK6 | Commercial calibration with test results data |