The 86250B Single-Band Plug-In make extensive use of microelectronics for superior performance and high reliability at an extremely low price. The unit is completely compatible with either the 8620A or 8620B mainframe. Frequency Range: 8.0 to 12.4GHz Maximum Leveled Power: 10 dBm Harmonic/Spurious: -30 dB/-60 dB Residual FM: <10 kHz peak