Comtech EFData CDM-570A/L & CDM-570A/L-IP Satellite Modems. Support for VersaFEC® low latency LDPC Forward Error Correction (FEC), the revolutionary DoubleTalk® Carrier-in-Carrier® bandwidth compression, and optimized transmit filter rolloffs. CDM-570A: 50 to 90 or 100 to 180 MHz IF range. CDM-570AL: 950 to 2250 MHz IF range.