The 7MB/E-45/T13-22 from Sainty-Tech Communications Limited is a Band Pass Filter with Frequency 38.8 to 51.2 MHz, Bandwidth 12.4 MHz (3dB), Center Frequency 45 MHz, Insertion Loss 1.53 dB, Upper Rejection 40 dB. Tags: Lumped Component Filter. More details for 7MB/E-45/T13-22 can be seen below.