User's Manual

COM5000-8 POWER

AMPLIFIER

THE COM5000-8 IS A HIGH-EFFICIENCY CLASS AB

AMPLIFIER WITH THE LINEARITY OF A CLASS A DESIGN.

This ampliﬁer is based on Silicon Power DMOS transistors that are speciﬁed for

continuous operation (CW) at maximum rated power. The COM5000 is modular in

design using basic building blocks in its four power ampliﬁers of 1.25 kW each. The

output of each power ampliﬁer passes through a selectable multiband low pass ﬁlter

which is then summed by the output combiner.

The ampliﬁer incorporates a sophisticated microprocessor based controller which is

used for normal “housekeeping” functions. The built-in T-4180 Exciter has RS-232

and RS-422 interfaces for connection to an external computer for remote control.

Built-In Test (BIT) routines continuously monitor conditions within the ampliﬁer and

transmit status information upon request.

The COM5000-8 has a built-in exciter (Cubic T-4180) and is FCC Part 87 certiﬁed.



www.cubic.com

Enabling a Safer World

• Modular Design

• 5,000 Watts PEP and Average

• 2.0 to 30 MHz

• Automatic Level Control (ALC)

• Operates into VSWRs up to

3:1 with graceful power reduction

• VSWR Protection above 3:1

• Multiband Low Pass Filters

• RS-232/422/485 Interfaces

• Built-in T-4180 Exciter

• FCC Part 87 Certiﬁed

• Front Panel Forward and

Reﬂected Power Meters

PAGE 1
Enabling a Safer World • Modular Design • 5,000 Watts PEP and Average • 2.0 to 30 MHz • Automatic Level Control (ALC) • Operates into VSWRs up to 3:1 with graceful power reduction COM50 0 0 -8 POWER A MPLIFIER • VSWR Protection above 3:1 THE COM5000-8 IS A HIGH-EFFICIENCY CLASS AB A MPLIFIER WITH THE LINEARIT Y OF A CLASS A DESIGN.
PAGE 2
Specifications • Frequency Range 2 to 30 MHz • Power Output 5,000 watts PEP and average (±0.5dB) with VSWR less than or equal to 1.3:1 • Power Input < 100mW PEP/average for rated power output • Input Impedance 50 ohm, 1.5:1 VSWR maximum • Gain Variation 1.5dB maximum over frequency range • VSWR Turndown Operates at reduced power from 1.