750W Compact High Power Amplifier
for Satellite Communications
C - Band
The VZC-6967AH
750 Watt TWT High
Power Amplifier—
high efficiency in a
compact package.
Global Applications
Provides 750 watts of power in a 5 rack unit
package, digital ready, for wideband, singleand multi-carrier satellite service in the 6.425
to 7.100 GHz frequency band. Ideal for
transportable and fixed earth station applications
where space and prime power are at a premium.
Meets International Safety Standard EN-60215,
Electromagnetic Compatibility 89/336/EEC
and Harmonic Standard EN-61000-3-2 to satisfy
worldwide requirements.
Employs a high efficiency dual-depressed
collector helix traveling wave tube backed by
many years of field-proven experience in airborne
and military applications.
Simple to Operate
User-friendly microprocessor-controlled
logic with integrated computer interface,
digital metering, pin diode attenuation and
optional integrated linearizer for improved
intermodulation performance.
Easy to Maintain
Modular design and built-in fault diagnostic
capability with convenient and clearly visible
indicators for easy maintainability in the field.
Worldwide Support
Backed by over three decades of satellite
communications experience, and CPI’s
worldwide 24-hour customer support network
that includes fifteen regional factory
service centers.
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]
750W Compact High Power Amplif ier
C -B a n d
Electrical (continued)
Integral Linearizer
Remote Control Panel
Redundant and Power
Combined Subsystems
Other Frequencies
(5.850 to 6.725 GHz,
Model Number
VZC-6967AT; 5.850 to
7.075 GHz, Model Number
VZC-6967AN; 5.850
- 6.650, Model Number
External Receive Band
Reject Filter (increases loss
by a minimum of 70 dB
up to 4.8 GHz)
Output Power
6.425 to 7.100 GHz
675 MHz
75 dB min. at rated power, 88 dB max.
78 dB min. at small signal, 90 dB max.
RF Level Adjust Range
0 to 20 dB (via PIN diode attenuator)
Gain Stability
At constant drive & temp.
Over temp., constant drive
(any frequency)
Small Signal Gain Slope
Small Signal Gain Variation
Across any 40 MHz band
Across the 675 MHz band
Across 675 MHz,
with linearizer option
±0.25 dB/24 hrs. max.
(after 30 min. warmup)
±1.0 dB over oper. temp. range
±0.75 dB over ±10˚C
0.5 dB pk-pk max.
2.5 dB pk-pk max.
1.25:1 max.
Any value
-50 dBc below 10 kHz
-20[1.5 +log F(kHz)] dBc,
10 kHz to 500 kHz
-85 dBc above 500 kHz
Phase Noise
phase noise profile
-6 dB
AC fundamentals related
-36 dBc
Sum of spurs (370 Hz to 1 MHz) -47 dBc
2.5°/dB max. for a single-carrier
at 8 dB below rated power.
With optional integral linearizer,
can be tuned to 1.0 deg/dB max.
Harmonic Output
-60 dBc at rated power,
second and third harmonics
Noise and Spurious
<-130 dBW/4 kHz, 3.4 to 4.2 GHz
<-65 dBW/4 kHz, 4.2 to 12.0 GHz
<-60 dBW/4 kHz, 4.2 - 12.0 GHz
with linearizer option
<-110 dBW/4 kHz, 12.0 to 40.0 GHz
Noise Figure
10 dB max.; 15 dB max.
with optional integral linearizer
not up in the air
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 223, ISSUE 1
0.01 ns/MHz linear max.
0.001 ns/MHz sq. parabolic max.
0.5 ns pk-pk ripple max.
Primary Power
Power Consumption
Single phase, 208-240 VAC ±10%
47- 63 Hz
2.5 kVA typ.
(at saturated RF output power)
2.8 kVA max.
Power Factor
0.95 min.
Inrush Current
200% max.
5.0 dB pk-pk max.
Output VSWR
AM/PM Conversion
Group Delay
(in any 40 MHz band)
±0.02 dB/MHz max.
1.25:1 max.
Residual AM, max.
-23 dBc max. with two equal
carriers at total output power 7 dB
(4 dB with optional integral
linearizer) below rated singlecarrier output
750 W min. (58.75 dBm)
650 W min. (58.13 dBm)
Input VSWR
Continuous operation
Full spec compliance
Operation without damage
Ambient Temperature
-10°C to + 50°C operating
-40°C to + 70°C non-operating
Relative Humidity
95% non-condensing
10,000 ft. with standard adiabatic
derating of 2°C/1000 ft., operating;
50,000 ft. non-operating
Shock and Vibration
Designed to withstand 20G at 11
ms (1/2 sine pulse) in nonoperating condition.
Forced air w/ integral blower. Rear
air intake & exhaust. Maximum
external pressure loss allowable:
0.5 inches water column.
RF Input Connection
Type N female
RF Output Connection
CPR-137 waveguide flange,
grooved, threaded UNF 2B 10-32
RF Output Monitor
Type N female
Dimensions (W x H x D)
19 x 8.75 x 24 in.
(483 x 222 x 610 mm)
95 lbs (43 kg) max.
Heat and Acoustic
Heat Dissipation
2000 Watts max.
Acoustic Noise
68 dBA (as measured at 3 ft.)