The L-band DC blocks from ETL systems are available with DC bock and 10 MHz pass on both ports, or DC bock and 10 MHz block on both ports. These devices are housed in a rugged, compact enclosure, and come with options of 50 SMA, N-type, BNC, and 75 BNC or F-type RF connectors. Meant for use indoors, these devices have operating parameters at 85 percent non-condensing humidity, 10,000 feet altitude, and 0°C to 45°C operating temperature range.