Comtech EF Data CDM-QX Multi-Channel Carrier-in-Carrier Satellite Modem

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SKU
CDM-QX
Comtech EF Data CDM-QX Multi-Channel Carrier-in-Carrier Satellite Modem is available to buy in increments of 1

Data rates up to 20 Mbps, Carrier-In-Carrier

CDM-QX Multi-Channel Carrier-in-Carrier Satellite Modem

The Comtech CDM-QX Multi-Channel Carrier-in-Carrier Satellite Modem offers cutting edge DoubleTalk Carrier-in-Carrier bandwidth compression capability that allows transmit and receive carriers of a full-duplex satellite link to share the same transponder space.

Comtech CDM-QX RF Interface


DoubleTalk Carrier-in-Carrier enables multi-dimensional optimization, thereby allowing satellite communications users to:

Reduce operating expenses (OPEX)

Increase throughput without using additional transponder resources

Increase availability (margin) without using additional transponder resources

Reduce capital expenses (CAPEX) by allowing a smaller BUC/HPA and/or antenna

Or, a combination to meet specific user needs

CDM-QX Modem Spectral Power Density Graph

The Comtech CDM-QX Multi-Channel Carrier-in-Carrier Satellite Modem is available in both 70/140 Mhz IF: Comtech CDM-QX and L-Band: Comtech CDM-QXL 

Comtech CDM-QX Specifications

Data Rate (See Summary Table)

32 kbps to 20 Mbps, in 1 bps steps (data interface dependant)

Symbol Rate

Up to 10 Msps

Scrambling

V.35, or synchronous

FEC (See Summary Table)

Viterbi 1/2, 3/4 and 7/8 Concatenated Reed-Solomon 1/2, 2/3, 3/4, and 7/8

Turbo Product Coding (TPC) -2nd Generation

Hardware option BPSK Rate 5/16 and 21/44 QPSK Rate 21/44, 3/4, 7/8, and 17/18 8PSK Rate 3/4, 7/8, and 17/18 16-QAM Rate 3/4 and 7/8

M&C Interface

EIA-232, EIA-485 (2- or 4-wire), 10/100 Base-T Ethernet with SNMP, HTTP and Telnet support

Form C Relays

TX, RX traffic alarms and unit faults

External Reference

1, 2, 5, 10 or 20 MHz, BNC connector

IF Impedance & Connectors

CDM-Qx: 75 0 (Optional 50 0), BNC female CDM-QxL: 50 0, Type-N female

Monitor Functions

Eb/N0, Frequency Offset, BER, buffer fill status, RX signal level, carrier power ratio

Enterprise, Broadband Interactive Services, Disaster Recovery & Emergency Communications, G.703 Trunking, High Speed Content Delivery