The 6FD10-4000/H1000-SMP from Sainty-Tech Communications Limited is a Band Pass Filter with Frequency 3258.95 to 4741.05 MHz, Bandwidth 1482.1 MHz (0.5dB), Center Frequency 4000 MHz, Upper Rejection 30 dB, Lower Rejection 30 dB. Tags: Cavity Filter. More details for 6FD10-4000/H1000-SMP can be seen below.