Designed for use in the 8660-Series Generator Mainframes, the 86601A RF Section Plug-in delivers 0.01 to 110MHz with 1Hz resolution. Output level (into 50-ohms) is available from +13 dBm to -146 dBm with an accuracy of ?1 dB (+13 to -66 dBm) and ?2 dB (-66 dBm to -145 dBm). Offers flatness (output level variation with frequency ) of 0.75 dB, non harmonic related spurious of -80 dBc