LDG AT-1000 1KW Automatic Antenna Tuner
Table of Contents
Introduction 2
IMPORTANT SAFETY WARNINGS 2
Jumpstart, or
“Real hams don’t read manuals!” 3
Specifications 3
Operating Instructions
4
Getting to know your AT-1000 4
Installation 5
Operation 6
Theory of Operation
9
Some basic ideas about impedance 10
Transmitters, transmission lines, antennas and impedance 10
The LDG AT-1000 11
Care and Maintenance
14
Technical Support 14
Warranty and Service 14
Firmware upgrades
14
Feedback
15
Introduction
Congratulations on selecting the LDG AT-1000 tuner. The AT-1000 is a breakthrough product, providing
fully automatic antenna tuning with memories for high power amplifiers. The AT-1000 is intended for use
with most tube or transistor 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 in St. Leonard,
Maryland LDG continues to define the state of the art in this field with innovative automatic tuners for
every amateur need.
IMPORTANT SAFETY WARNINGS
2
Like all high power antenna tuners, your AT-1000 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-1000 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-1000. 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-1000, just as you do with your amplifier or any conventional tuner operating at this power level. Never
operate your AT-1000 with the cover removed; lethal RF voltages may be present during operation.
To Next Page
Loading...
Need help?
General
