Introduction; Important Tuner Safety Warnings - LDG AT-1000Pro Manual

Introduction

Congratulations on selecting the LDG AT-1000Pro tuner. The AT-1000Pro is an important
update of LDG's flagship tuner, now providing fully automatic antenna tuning with memories for
high power amplifiers. The AT-1000Pro is intended for use with most tube or solid-state
amplifiers outputting up to 1,000 watts SSB. It will tune dipoles, verticals, Yagis or virtually any
coax-fed antenna.
LDG pioneered the automatic, wide-range switched-L tuner in 1995. From its laboratories near
our Nation's Capital, LDG continues to define the state of the art in this field with innovative
automatic tuners and related products for every amateur need.
Like all high power antenna tuners, your AT-1000Pro handles a great deal of RF energy. Very
large RF currents flow through the tuner, and very high RF voltages are sometimes present. Your
AT-1000Pro is designed to safely handle this RF energy within its specifications, with a
reasonable margin of safety. However, some amateur amplifiers are capable of outputting RF
levels in excess, sometimes far in excess, of the specified maximums. Operating significantly
above specifications will definitely damage or destroy your AT-1000Pro. Operating above
specifications can cause catastrophic failure of internal components; under extreme overload,
components could actually explode. You must observe the stated specifications of your AT-
1000Pro, just as you do with your amplifier or any conventional tuner operating at this power
level. Never operate your AT-1000Pro with the cover removed; lethal RF voltages may be
present during operation.
IMPORTANT ANTENNA SAFETY WARNING
Never install antennas or transmission lines over or near
power lines. You can be seriously injured or killed if any part
of the antenna, support or transmission line touches a power
line. Always follow this antenna safety rule: the distance to
the nearest power line should be at least twice the length of
the longest antenna, transmission line or support dimension.

IMPORTANT TUNER SAFETY WARNINGS

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