The BPF-2A-1500 SQ from Crane Aerospace & Electronics is a Modulator with RF Frequency 1500 ± 500 MHz, Carrier Suppression -30 dBc, Insertion Loss 6 dB, Amplitude Balance 0.75 dB, Current -15 to 15 mA. Tags: Flat Pack. More details for BPF-2A-1500 SQ can be seen below.