The Model 503 L is a general purpose broadband amplifier
capable of more than 3 watts of linear power output when
driven by any laboratory signal or sweep generator from 2 to
An ultra linear Class A design, the 503L will “boost” the
output of any signal source by a flat 40 dB (+ 1.5 dB) and
provide its full forward output power into any load
impedance (from an open to a short circuit). Its output is a
faithful reproduction of the input waveform for AM, FM, SSB,
CATV, pulse and other complex modulations. Although
specified only over the 2 to 510 MHz frequency range, full
power output is typically available from 1.6 to 540 MHz.
The use of microwave transistors on thin film substrates,
microstrip circuitry, and plug-in modules make the 503L both
reliable and easy to service. An integral power supply and
cooling system permit operation over a wide range of
temperature and AC line conditions.