The MC6A1820F140HCA from Sainty-Tech Communications Limited is a Band Pass Filter with Frequency 1750 to 1890 MHz, Bandwidth 140 MHz, Center Frequency 1820 MHz, Insertion Loss 2 dB, Upper Rejection 40 to 50 dB. Tags: Surface Mount, Monoblock Filter, Dielectric Filter. More details for MC6A1820F140HCA can be seen below.