The 4MB/C-540/U60-S4A from Sainty-Tech Communications Limited is a Band Pass Filter with Frequency 508.015 to 571.985 MHz, Bandwidth 63.97 MHz (1dB), Center Frequency 540 MHz, Upper Rejection 40 dB, Lower Rejection 40 dB. Tags: Lumped Component Filter. More details for 4MB/C-540/U60-S4A can be seen below.