The BPF-2A-2000 SQ from Crane Aerospace & Electronics is a Modulator with RF Frequency 2000 ± 20 MHz, Carrier Suppression -25 dBc, Insertion Loss 6 dB, Amplitude Balance 0.4 dB, Current -15 to 15 mA. Tags: Flat Pack. More details for BPF-2A-2000 SQ can be seen below.