400W Outdoor TWT Amplifier
for Satellite Communications
C - Band
The T04CO Series
C - Band
400 Watt TWT
Amplifier — high
efficiency in an
environmentally sealed
compact package
designed for outdoor
Easy to Maintain
Provides 400 watts of power in a rugged and
compact weatherproof package, digital ready,
for wideband, single- and multi-carrier satellite
service in the 5.85 - 6.65 GHz frequency band.
Ideal for transportable and fixed earth
station applications.
Modular design and built-in fault diagnostic
capability via remote monitor and control.
Cost Effective and Efficient
Mounting at the antenna improves performance
through minimized cable losses and saves cost in
system design. Employs a high efficiency, dualdepressed collector helix traveling wave tube
reducing operating costs.
Global Applications
Meets International Safety Standard EN-60215,
Electromagnetic Compatibility 2004/108/EC
and Harmonic Standard EN-61000-3-2 to satisfy
worldwide requirements.
Worldwide Support
Backed by over three decades of satellite
communications experience, and CPI’s worldwide
24-hour customer support network that includes
sixteen regional factory Service Centers.
Designed and built to survive in extremely
adverse environmental conditions and features
increased cooling margin for longer life.
Simple to Operate
User-friendly microprocessor-controlled logic
with integrated RS422/485 computer interface.
Digital metering, pin diode attenuation and
optional integrated linearizer for improved
intermodulation performance.
811 Hansen Way
P.O. Box 51625, Palo Alto, CA 94303
tel: +1 (650) 846-3803
fax: +1 (650) 424-1744
e-mail: [email protected]
400W Outdoor TWT Amplif ier
Plays in the Rain
C-B a n d
• 1 RU Remote Control Panel
• Integrated 1:1 Switch
Control and Drive
• Redundant and Power
Combined Subsystems
• SSIPA with Variable
Attenuator (provides
RF Level Adjust Range
of 0 to 30 dB)
5.85 - 6.65 GHz
Output Power
400 W min. (56.02 dBm)
350 W min. (55.44 dBm)
800 MHz
46 dB min. at rated power output
(70 dB with SSIPA)
52 dB min. at small signal
(75 dB with SSIPA)
Gain Stability
At constant drive and temp
Any frequency
• Integral Linearizer
(Requires SSIPA option)
• Extended Frequency Range
(to 7.10 GHz)
• Additional External Receive
Band Reject Filter
(increases loss by a
minimum 65 dB up
to 4.8 GHz)
Electrical (continued)
±0.25 dB/24hr max. (after 30 min. warmup)
±1.0 dB over operating temp. range;
(±1.75 dB above 6.725 GHz for 7.1 GHz ext.
frequency option);
±0.75 dB over ±10°C
Small Signal Gain Slope
±0.02 dB/MHz max. (±0.04 dB/MHz max.
with BUC option)
Small Signal Gain Variation
0.5 dB pk-pk across any 40 MHz band;
2.5 dB pk-pk across the 800 MHz band;
4.0 dB pk-pk across the 1250 MHz band;
4.5 dB pk-pk across any 500 MHz, with
BUC option
RF Level Adjust Range
0 to 30 dB typ. (SSIPA option required)
Attenuator Step Size
0.1 dB (SSIPA option required)
• L-Band Block Upconverter
(BUC --- requires SSIPA)
Input VSWR
1.3:1 max. (1.5:1 max. with BUC option)
Output VSWR
1.3:1 max.
• Ethernet Interface
2.0:1 max. continuous operation;
any value for operation without damage
• Higher Operating
Temperature Limit (+60°)
Residual AM
-50 dBc below 10 kHz
-20[1.5 +log F (kHz)] dBc,
10 kHz to 500 kHz
-85 dBc above 500 kHz
• Circuit Breaker Package
(NOTE: This option is NOT
CE Compliant)
Phase Noise
12 dB below mask (3 dB with BUC option)
phase noise continuous
AC fundamentals related
-50 dBc (-33 dBc with BUC option)
Sum of spurs (370 Hz to 1 MHz) -47 dBc (-39 dBc with BUC option)
AM/PM Conversion
2.5°/dB max. for a single carrier at
7 dB below rated power (2.5°/dB max. at
3 dB below rated with linearizer)
Harmonic Output
-60 dBc at rated power
Noise and Spurious
(at rated gain)
<-150 dBW/4 kHz, 3.4 to 4.2 GHz
<-70 dBW/4 kHz, passband to 18.0 GHz
<-65 dBW/4 kHz, passband to 18.0 GHz
(with linearizer option)
<-105 dBW/4 kHz from 18.0 to 26.0 GHz
<-125 dBW/4 kHz from 26.0 to 40.0 GHz
Certificate Number: 30515
For more detailed information, please refer to the corresponding CPI Technical Description.
Note: Specifications may change without notice as a result of additional data or product refinement.
Please contact CPI before using this information for system design.
MKT 114, ISSUE 14
-24 dBc max. with two equal
carriers at total output power
7 dB (4 dB with optional integral
linearizer) below rated
single-carrier output; -23 dBc
above 6.725 GHz, 7.10 GHz
extended freq. option
Group Delay
(in any 40 MHz band)
0.01 ns/MHz linear max.
0.001 ns/MHz 2 parabolic max.
0.5 ns pk-pk ripple max.
Primary Power
90-264 volts AC, single phase
47-63 Hz
Power Consumption
1350 W typ.
1500 W max.
Power Factor
0.95 min.
Inrush Current
200% max.
Environmental (Operating)
Ambient Temperature
-40°C to +55°C operating,
including solar loading;
-40°C to +75°C non-operating
Relative Humidity
100% condensing
10,000 ft. (3,048 m) with standard
adiabatic derating of 2°C/1000 ft.
(305 m), operating;
50,000 ft. (15,240 m),
Shock and Vibration
Designed for normal transportation
environment per Section 514.4
MIL-STD-810E. Designed to
withstand 20g at 11 ms (1/2
sine pulse) in non-operating
Acoustic Noise
65 dBA @ 3 ft. from amplifier
Heat Dissipation
1100 W max.
Forced air with integral blower
RF Input Connection
Type N female
RF Output Connection
CPR-137 G waveguide flange,
grooved with UNC 2B 10-32
threaded holes
RF Output Monitor
Type N female
Dimensions (W x H x D)
10.25 x 10.5 x 20.5 in.
(260 x 267 x 521 mm)
55 lbs (25.0 kg) with
no options, max.