Atec Amplifier-Research-75A250 - Manual

160 School House Road, Souderton, PA 18964-9990 USA
Phone 215-723-8181•FAX 215-723-5688
MODEL 75A250
75 WATTS CW
10 kHz - 250 MHz
with Versions M1-M4
The Model 75A250 amplifier is a self-contained, broadband unit designed for laboratory
applications where instantaneous bandwidth, high gain and moderate power output are required.
Utilization of push-pull MOSFET circuitry lowers distortion, improves stability and allows
operation into any load impedance without damage. The Model 75A250, when used with an RF
sweep generator, will provide a minimum of 75 watts of swept power.
The Model 75A250 includes a front panel control which permits the operator to conveniently set
the amplifier's desired output level. Housed in a stylish contemporary enclosure, the Model
75A250 provides readily available RF power for typical applications such as RF susceptibility
testing, antenna and component testing, watt meter calibration, and use as a driver for higher
power amplifiers.
The 75A250 utilizes a switching power supply with a universal, autoranging input which will
automatically accept from 90 to 135 VAC or from 180 to 270 VAC at 47 to 63 Hz.
0
20
40
60
80
100
120
WATTS
1 10 100 1000
FREQUENCY (MHz)
75A250 TYPICAL POWER OUTPUT
0.001
CW
0.01 0.1
LINEAR @ 1dB COMPRESSION
REV112597