Operating Instructions; Basic Operation; Function 1: Bypass Mode (Short Press); Function 2: Memory Tuning Cycle (Medium Press) - LDG Z-100 Manual

Automatic antenna tuner
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Z-100 installations with IC-706
(cable styles may vary)

Operating Instructions

Basic operation:

All functions are controlled through the Tune button. In every case, action occurs when you
release the button. Various commands are indicated by the length of time you hold the Tune
button before releasing it. There are three lengths of press: short (less than .5 seconds), medium
(.5 – 3 seconds) and long (more than 3 seconds). This sounds a lot more complicated than
actually it is; this interface will quickly become familiar and easy.

Function 1: Bypass mode (Short press)

To place your Z-100 in bypass mode, press the Tune button less than a half-second. The tuner
will switch to bypass. The green LED will blink fast for a half-second to indicate bypass mode
has been selected. In bypass mode, RF from your transmitter goes directly to the antenna with no
matching.

Function 2: Memory Tuning Cycle (Medium press)

If you are tuning near a frequency at which you have already completed a full tuning cycle, you
can reset the tuner very quickly by using a Memory Tuning Cycle. Key your transmitter and press
and hold the Tune button for .5 to 3 seconds, then release. The red LED will light in the .5 – 3
second period to show that you are in the memory tune range of the Tune button. The tuner will
automatically check for a saved tuning setting, and if present will restore that setting in a small
fraction of a second. If no tuned setting is saved near the present frequency, the tuner will begin a
full tuning cycle, saving the result when finished for future operation on that frequency. In this
way, the Z-100 "learns"; the longer you use it, the more closely it adapts itself to your most often
used bands and frequencies. You will probably use Memory Tuning most of the time; it takes
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