This Manual provides all the information necessary to install and operate your ALPHA 89. Sche-
matic diagrams are available on request, at no charge to owners. For your own protection please
return the Owner Registration Card immediately and advise ETO of any future address change
promptly.
1.1 - OWNER ASSISTANCE
Assistance is available from ETO Customer Service (Communications Products) at (719) 599-3861,
260-1191, by FAX at (719) 260-0395, or by mail. ALPHA technical specialists also may be contact
through the same office.
OVERVIEW OF AMPLIFIER CAPABILITIES
It is extremely important to thoroughly review Installation and Operation sections of this manual
before attempting to use the ALPHA 89. Failure to do so could result in serious damage not covered
under warranty.
The ALPHA 89 is capable of 1.5 kW continuous RF output on all commonly-used modes and on any
authorized amateur frequency from 1.8 to 29.7 MHz.
The ALPHA 89 is compatible with all popular amateur BF transceivers and exciters. It requires
approximately 50 watts peak RF drive for 1.5 kW output.
The ALPHA 89 is capable of full break-in CW (QSK) and all digital modes when used with any
appropriate transceiver. The ALPHA 89 control system incorporates protective functions that mini-
mize the probability of accidental damage to the amplifier or its power tubes. In most cases, when
one of the protective functions is "tripped," a front panel LED indicator will display the fault (e.g.,
excessive grid or plate current, load reflected power/ VSWR, etc.)
For extended RATT or other very high duty cycle service, use of the ALPHA 89 optional auxiliary
cooling fan, available from ETO, is strongly recommended. With reasonable care, your ALPHA 89
should provide exceptional performance and satisfaction for many years.
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