Comtech EF Data DT4503 Series C-Band Downconverter

  • Industry Leading Phase Noise Performance
  • 45 dB of Gain Standard
  • Patented Daisy Chain Switching
Out of stock

Comtech EF Data DT4503 C-Band Down Converter


The Comtech EF Data (CEFD) DT-4503/C Down Converter is the ultimate in high performance and cost effective C-Band frequency conversion. The DT-4503/C can be used for SCPC, DAMA, and TDMA, as well as full transponder HDTV and analog TV. Spectral purity and stability characteristics fully meet or exceed the requirements of all domestic, international, and regional commercial satellite networks.

High Gain

The DT-4503/C has +20 dBm minimum output level at the 1 dB compression point and 45 dB of gain as a standard. This capability permits longer cable runs to the modem rack or compensates for elaborate splitting networks without adding expensive options such as external line amplifiers.

Typical Back Panel

Low Phase Noise

The phase noise performance of the DT-4503/C exceeds the Intelsat phase noise mask for IBS and IDR services by more than 18 dB. This allows phase dependent demodulators to perform better. The close-in phase noise is very low, making the converter ideal for low bit rate digital circuits such as those used in DAMA hub earth stations.

Remote Control

The remote control interface is selectable between EIA-232 and EIA-485, as well as full Ethernet including Telnet, SNMP and pre-loaded HTML GUI. All configuration control, status retrieval, and adjustments are available as simple ASCII commands through the serial interface or through the front panel menu. As a cost option, the remote control command structure can be customized in order to accommodate existing network control software.

Detachable RF/IF Connector Module

Each DT-4503/C is equipped with a detachable module that establishes input and output connections for the RF and IF paths. The module inserts into a rear compartment of the converter, and requires no additional outside space. The module includes Type N connectors for the RF path and BNC connectors at 50 or 75 ohm for the IF path.

Daisy Chain Redundancy Switching

The converter uses our patented "Daisy Chain” integrated switching technology. The Daisy Chain design removes the relays associated with a centralized protection switch tray and distributes them across the individual converters. Daisy Chain technology successfully eliminates a central switching chassis, two power supplies, a microprocessor, and several long, costly cables. Widely accepted in the industry, CEFD’s Daisy Chain provides both pricing and marketing advantages.

Minimum Rack Space

Due to its small rack height (1.75 inches) and the elimination of the space penalty paid for a separate 1+N switch chassis, the DT-4503/C and the Daisy Chain switch architecture provide the most compact and cost effective converter subsystem available. The units are ideal for the construction of transportable systems such as “flyaways,” and high capacity earth stations where space utilization and economy are prime considerations.

More Information
Country of Manufacture United States
Manufacturer Comtech EF Data
Input Power 100 - 240 VAC, -48VDC
Prime Frequency C-Band
Input Frequency 3.7 - 4.2 GHz
Output Frequency 50 - 180 MHz, 70 MHz, 140 MHz
Warranty 2 Years
Write Your Own Review
You're reviewing:Comtech EF Data DT4503 Series C-Band Downconverter
101 Eagle Road Building 7. Avon, Colorado. 81620.
T : (970)-748-4250.