PA-2220A 1-kW Power Amplifier


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Features & Benefits

  • Modular design
  • Operates into VSWR up to 3:1 with graceful power degradation
  • 1,000 watt PEP & average
  • VSWR protection above 3:1
  • 1.6-29.99999 MHz operation
  • 19-inch rack mountable
  • Automatic Level Control (ALC)
  • Companion AC power supply
  • Built-in test (BIT) routines
  • Multi-range low-pass filter
  • EIA-232/485/422 interfaces
  • Compatible with URG-III product line


Physical Specs

Front Panel Indicators

VSWR fault
Over-temperature fault 


Height: 10.5 inches (267 mm)
Width: 19.0 inches (483 mm)
Depth: 22.0 inches (559 mm)
Weight: 65 pounds (30 kilograms) 


Height: 7.0 inches (178 mm)
Width: 19.0 inches (483 mm)
Depth: 19.5 inches (489 mm)
Weight: 40 pounds (18 kilograms


Frequency Range

1.6 to 29.99999 MHz

RF Power Input

100 milliwatts nominal

RF Power Output

1-kW (+/- 0.5 dB) PEP and average into 1.3:1 VSWR

VSWR Turndown

Operates at reduced power into 1.3:1 to 3:1 VSWR. Stable at any load. Protected for infinite VSWR

Input Impedance

50 ohms nominal, 1.5:1 VSWR max

Gain Variation

2 dB max over frequency range

Harmonic Levels

-63 dBc or better into 50-ohm load

3rd order IMD

> 36 dB below PEP

RF Noise

Better than 75 dBc/Hz below full rated power

Spurious Emissions

-60 dBc or better at up to +/-5 percent from operating frequency
-80 dBc or better at greater than +/-5 percent from f0

Frequency Change Time

50 ms max between any two frequencies

Key Control Time

RF power is within +/- 1 dB of steady state level in <10 ms after key ON. RF power is reduced by more than 50 dB ~5 ms after key OFF

Operating Mode

Class AB

Prime Power

230 V ac 1-phase approximately 3500 watts


EIA-232/485/422 serial bus, ALC (to external exciter) & BIT parameters via serial bus


Temperature, Operating

0 to +50 C at mean sea level, derated linearly to -20 C at 10,000 feet above mean sea level

Temperature, Non-operating

-40 to +60 C


0 to 95 percent, non-condensing


operating, 0 to 3050 meters
non-operating, 0 to 15250 meters


forced air, internal fans

Acoustic Noise

55 dBa

Typical System

Main Components

Please contact Rockwell Collins for additional information on this product.

Related Documents


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