The Ameritron EBS-1 is an electronic bias system designed as an add-on for the
AL-1200, 1500, and 82 amplifiers. It reduces heat by reducing quiescent current
to very low values during periods when exciter output falls below 100mW.

The switching time of the EBS-1 series is 20 uS. The fast switching time of the
EBS-1 series, plus the small bias change from near class B to normal class AB,
insures bias switching does not add splatter or distortion to the transmitted
signal.

The EBS-1 series also has no measurable effect on CW waveforms or signal
bandwidth. The EBS-1 series has the potential to reduce receiver noise on
break-in CW between break-in CW between characters, in cases where diode-noise
from the PA section quiescent current is audible. The EBS-1 can be modified to
the fully adjustable bias voltage system.