Application Notes
Mobile Operation
Your Z-11Pro is perfectly suited to mobile operation. You can install it under the dash along with
your transceiver, or remotely in the trunk. The only requirements are that the tuner remain dry,
and that you provide a fused source of DC power in accordance with the specifications. The Z-
11Pro does not include an internal fuse; you must provide one in the DC line. LDG recommends
a 2 Amp "fast blow" fuse. Make sure the tuner is well grounded to the car body.
To install the unit under the dash, you can "homebrew" a bracket (LDG does not provide one).
You can also use Velcro tape, although the adhesive tends to soften in hot weather. In the trunk,
Velcro works well to secure the unit to the trunk floor. Simply run coax from your transceiver to
the tuner, run a fused DC line to the tuner and connect your mobile antenna. Set the tuner to
Automatic mode, and you're ready to go. The tuner will adjust the match as needed whenever you
transmit on a new band or frequency. You can observe the progress of the match on your rig's
SWR meter or on the Z-11Pro's LEDs (not while driving; keep your eyes on the road!). When the
reading stops changing, the tuner has finished tuning. Most of the time this will happen very
quickly as the Z-11Pro tunes from memory in a fraction of a second.
Tuner
Xcvr
DC
2
A
When To Use Auto Mode
Auto mode is most useful when you are often changing frequencies and bands (a contest, for
instance). With memory operation, Auto mode will retune almost instantly whenever you transmit
on a new frequency. On the other hand, if your antenna SWR is relatively flat across the band of
frequencies you're using, retuning might not be necessary, and semi-automatic mode would be
preferable.
MARS/CAP Coverage
Your Z-11Pro provides continuous tuning over its specified range, not just in the ham bands. This
makes it useful for MARS or CAP operation, or any other legal HF operation.
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