Introduction
Congratulations on selecting the LDG Z-11Pro tuner. The Z-11Pro provides fully automatic, any-
mode antenna tuning across the entire HF range plus 6 meters at power levels to 125 watts. 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. The Z-
11Pro is designed with battery-powered operation in mind; it uses little power while tuning, and
with its latching relays, uses essentially no power in standby.
While resembling earlier LDG tuners in overall layout and function, the Z-11Pro 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 user-settable options are accessible from the front panel. The LEDs show
SWR and readouts
of internal states and settings. LDG's exclusive 3-D memory provides virtually instant memory
tuning for up to four different antennas.
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 Z-11Pro tuner
using the 50 Ohm coaxial cable jumper.
2. Connect your 50 Ohm antenna coax lead to the "Ant" jack on the back of your Z-
11Pro.
3. Connect your Z-11Pro to a source of 8 - 16 volts DC @ 250mA 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
6. Wait for the tuning cycle to end.
7. You’re now ready to operate.
Observe safety warning (page 4) and installation warning (page 6)
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, transceiver and/or tuner.
3
