6623A-1000-EFW-2Y

Adds 1 Additional Year of Factory Standard Warranty (Models 1000A, 2000A, 3000A) (4 Yrs Total)

Open Market/ 150 Days

85052C

Precision mechanical calibration kit, DC to 26.5 GHz, 3.5 mm

Open Market/ 6 Weeks

N5262AC01

Calibration kit, 750 GHz - 1.1 THz, WR-1.0, from Virginia Diodes, Inc

Open Market/ 8 Weeks