RF Amplifiers Class AB,A/B, Linear Rack Mount from HD Communications

When You Need An RF Microwave Amplifier ....We Have It

From 1 MHz to 40 GHz with Power Levels from .1 mil Watt to 2.5 Kw

Single Carrier.... Multi-Carrier ..... Base Station to Earth Station

Welcome to HD Communications RF Amplifier selection guide. If you require an RF microwave amplifier chances are we offer it. We offer a full range of RF amplifiers including class A/B amplifiers and RF test amplifiers. We have been in the amplifier business since 1976 and offer an extensive range of products. If you can not find what you are looking for please call or send us an email request

Solid State High Power Class A/B Amplifiers in Rack Mount Cabinet

*Performance Capabilities*
	Wide bandwidth AB linear, low distortion Graceful degradation Field-replaceable modules Built-in test diagnostics Power output 100 to 1000 W High frequency switching power supply Frequency range 10 kHz to 1800 MHz IEEE 488 BUS/RS232 (optional) AM, FM, CW, pulse & phase modulated signal inputs

Application Advantages
Series HDE and HDC Amplifiers are arranged in a variety of configurations, depending on the output power requirements and frequency range.
HDE/HDC wide bandwidths are ideal for multi-octave, frequency-agile systems; unattended or remote computer controlled. Typical applications include:

TWT replacement
EW/ECM systems

Communication systems
AM/FM transmitter boosters
High power calibration testing

Repeaters
RFI/EMI testing

Available Options
Rack Mounting Slides IEEE 488/RS232 BUS Compatibility Modulation Control Custom Configuration Other Primary Power (AC or DC)		Mechanical or Solid State Switching Filters Sample Ports (Forward. Reflected) Noise Quieting (Look Through) Remote Turn-on/off Greater Harmonic Rejection

See Our Standard Models

Standard Models

Input/Output Overdrive Protection
A leveling loop system protects the amplifiers from input overdrive signals of up to +8 dB. Under an overdrive condition, the output power is controlled at a level 2% to 10% above the rated output at normal input level conditions. The curve shown in Figure B. below, depicts the typical output characteristics of the amplifier when a CW input overdrive signal is compared to a normal drive signal. A power overshoot will be present at the beginning of the overdrive condition, which is a function of the amount of overdrive. Note that this characteristic can be used to obtain a 1 to 3 dB output power increase for narrow pulses with a low duty cycle.

Load VSWR Protection
Series HDE amplifiers provide load VSWR protection via an electronic power output turndown system employing negative feedback techniques. The system is self-correcting as a function of load VSWR to infinity, at any phase angle. The typical response Time is 60 usec.

Series HDC amplifiers provide load VSWR protection via a self-contained output circulator that maintains a constant transistor load impedance regardless of the load variation. Therefore, the forward power output can be delivered into any load VSWR.

Electrical Specifications

RF Input Power:
	1 mW(0dBm), for full power output RF
	Series HDC: Circulator protection

RF Input Signals:
	CW, FM, AM, pulse/phase modulation

Input Overdrive Protection: 8 dB

Out of Band Protection: 8 dB

Input VSWR: 2:1 maximum

Spurious Signals: -60 dBc

ClassAB Operation Efficiency(AC-RF):
	16% typical

Pulse Rise/Fall Time (typical):
	1.5 to 30 MHz Models: 500 nsec >20 MHz Models: 150 nsec

Noise Power Output:
	-86 dBm/Hz typical (1000 W models)

Built-in Test (Models >/= 500 W):
	Digital Meters: Relative forward/reflected power, module status, power supply current and voltage

Indicators:
	Power on, thermal overload, fault sense

Output Load VSWR:
	Series BHE: 1.3:1, full forward power output; 2.0:1, -0.5 dB maximum
	Series HDC: Circulator protection

Harmonics:
	<One Octave: -30 dBc
	>One Octave: Even: -20 dBc (-25dBc for BHE4819 & BHE 5819)
	Odd: -12 dBc

Primary Power:
	100 and 200 W Models: 115 or 220 VAC +10%, 50/60 Hz
	500 and 1000 W Models: 208 VAC, or 380 VAC, 50/60 Hz 3-phase, 5 wire

Protection:
	Load VSWR, thermal overload, input overdrive, graceful degradation, overvoltage, undervoltage, overcurrent

Connectors:
	RF Input: Type N, rear panel RF Output: Type N or SC, rear panel


Environmental Specifications

Temperature:			Altitude:
Operating: 0º to 50º C, ambient Non-operating: -40º to + 85º C			Operating: 10,000 feet Non-operating: 40,000 feet

Shock:			Vibration:
MIL-STD-810C, method 516.2, procedure 1, 15G. 11 msec 1/2 sine			MIL-STD-810C, method 514.2, procedure VIII curve V, 1 hr/axis

Humidity: 95% non condensing

Specifications are subject to change without notice