The ANM-SF-M01 from MECA is a Between Series RF Adapter with Connector Inner Diameter 0.812 inches, Connector Length 1.24 inches, Frequency 0 to 18000 MHz, Insertion Loss 0.006 to 0.010 dB, Temperature -65 to 85 °C. More details for ANM-SF-M01 can be seen below.