Introduction
Congratulations on selecting the LDG AT-100Pro tuner. The AT-100Pro provides fully
automatic, any mode antenna tuning across the entire HF range plus 6 meters for less than the
cost of some manual tuners. It will tune dipoles, verticals, Yagis or virtually any coax-fed
antenna. It will match an amazing range of antennas and impedances, far greater than some other
tuners you may have considered. Also, it consumes very little power making it suitable for
battery-powered operations.
While resembling earlier LDG tuners in overall layout and function, the AT-100Pro represents a
quantum leap in features and performance. Enhanced tuning algorithms provide much faster,
precise and consistent tuning. Automatic tuning is now available during transmission, even SSB,
and many user-settable options are accessible from the front panel. The two large LED meters
provide simultaneous readings of power and
SWR, and readouts of internal states and settings.
LDG pioneered the automatic, wide-range switched-L tuner in 1995. From its laboratories near
the nation’s capitol, LDG continues to define the state of the art in this field with innovative
automatic tuners and related products for every amateur need.
Jumpstart, or “Real hams don’t read manuals!”
Ok, but at least read this one section before you transmit:
1. Connect the antenna jack on your transceiver to the "Tx" jack on your AT-100Pro
tuner using a 50 Ohm coaxial cable jumper of appropriate power handling capability.
2. Connect your 50 Ohm antenna coax lead to the "Ant 1" jack on the back of your AT-
100Pro.
3. Connect your AT-100Pro to a source of 11 - 16 volts DC @ 500mA via the 2.5 by 5.5
mm power jack on the back (center positive).
4. Power up your transceiver and select the desired operating frequency.
5. Begin transmitting, any mode
1
.
6. Wait for the tuning cycle to end.
7. You’re now ready to operate.
1
If using SSB mode, simply speak into the microphone. You can tune while transmitting up to 125 watts if
your transceiver has a “roll-back circuit” to protect it from high SWR. If it does not have a roll-back circuit,
limit power when tuning to 25 watts to avoid damage to your transmitter or transceiver.
3
To Next Page
Loading...
Need help?
General
