• Transmission (S1, S2): ±1 dB, ±12º from 0.5 to 1300MHz
• Reflection (S1, S2): ±2 dB, ±20º from 0.5 to 1300MHz): ±15º from 2 to 1300MHz.
• Maximum operating level of ±20 dBm
• Connectors: Test ports, 75 ohm APC-7, all other RF connectors, 75 ohm Type N(F); bias inputs, BNC female
• DC bias input: ±30 VDC, ±200 mA

Due to its wide frequency range of 500kHz to 1.3GHz and directivity of >/=40 dB, the Agilent HP 8503B S-Parameter Test Set is considered one of the best in the industry. Frequency response: