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LPOD C-, X-, or Ku-Band Outdoor Amplifier / Block Up Converter (BUC)
MN-LPOD
Introduction
Revision 14
1.2 Functional Description
The compact size and weight of the LPOD lends itself to any installation with
limited available mounting space. These include ship-borne antenna systems,
small "flyaway" systems, and Satellite News Gathering (SNG) installations. The
addition of the optional internal reference and LNB bias T facilitates multi-carrier
and redundant operations required of small-to medium-sized hub installations.
As shown in Figure 1-1, Comtech EF Data's LPOD is available in three models: the
PS 1, PS 1.5 and PS 2. Each LPOD consists of a CEFD SSPA module with the
Monitor/Control Processor (MCP), a power supply, and a fan assembly. The
amplifier features a Comtech EF Data low loss combining technique and MCP-
based temperature-versus-gain compensation.
The PS 1 and PS 1.5 models are always configured as a BUC/SSPA (L-Band in, RF
out) with available power levels to 100W; the PS 2 version can be configured as
an integrated BUC/SSPA or solely as an SSPA (RF in, RF out) at power levels to
250W.
1.3 Features
1.3.1 The Solid-State Advantage
The LPOD is constructed with highly reliable gallium arsenide field-effect
transistors (GaAs FETs). With third-order intermodulation products that are 4 to 6
dB better than TWT ratings, the CEFD unit replaces TWTs with saturated power
levels of up to twice the LPOD's rated output. The LPODs also provide mean time
between failures (MTBF) that is four to five times greater than the typical TWT
MTBF.
1.3.2 Enhanced Standard Features
The LPOD comes equipped with useful features that other manufacturers offer
only as options. Included in the base price are temperature compensation,
sample ports (on the PS 2 only), power monitor, power factor corrected supply,
1–2
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