Comtech High-Power Outdoor (SPOD) C- and X-Band SSPA
Comtech EF Data’s (CEFD) Series of High-Power Outdoor (SPOD) C- and X-Band Solid-State Power Amplifiers (SSPA) provide a
cost-effective, more reliable replacement for TWT amplifiers in satellite communications terminals. The SPOD delivers its rated power at
the 1 dB compression point, to the transmit waveguide flange.
The Solid State Advantage
Each SPOD SSPA is constructed with highly reliable GaAs FETs. With third order intermodulation products from 4 to 6 dB better than
TWT ratings, the CEFD unit has the ability to replace TWTs with saturated power levels of up to twice the SPOD’s rated output.
A SPOD consists of an SSPA module with the Monitor/Control Processor (MCP), an integrated power supply, and a field replaceable fan
assembly. The amplifier features a Comtech EF Data low loss combining technique and MCP-based temperature versus gain
The SPOD SSPAs are equipped with useful features that other manufacturers offer as options. Included in each unit’s base price are
temperature compensation, sample ports, power monitor, power factor corrected supply and full remote monitor and control capabilities,
including Ethernet HTTP pages and SNMP.
Another challenge addressed by the SPOD topology is the increasing need for redundant RF solutions. With a unique solution to system
control, The SPOD offers a very cost-effective solution for 1:1 redundant TX requirements.
Integrated Power Supply
All SPOD SSPAs have a self-contained, extremely rugged, power supply. While generally fielded as an AC powered unit, SPODs are
also available with -48 VDC power supplies.
Data Logging Capability
To greatly enhance system maintainability, the SPOD line includes a built in data logging capability. By recording critical operational
parameters (such as temperature, output power, mute status, etc.) at time stamped intervals, the user can quickly gather intelligence not
only about the unit itself, but also the unit’s operational environment.