Full tuning cycle (long press)
Set your transmitter or transceiver to SSB, AM, FM, CW or Packet mode, and a power level of no
more than 125 watts if your radio has a power rollback circuit. If your radio lacks a rollback
circuit (see your owner’s manual), set the power level to no more than 25 watts.
Press the PTT switch on the microphone (close key on CW) to transmit a carrier, or simply begin
talking on SSB or AM. While transmitting, press and hold the
Tune
button on the front of your
Z-11Pro for at least 3 seconds (two inner LEDs lit).
Release the
Tune
button; a Semi-Auto tuning cycle will begin. The Tune LED will light and you
will hear the relays in your Z-11Pro as they switch in and out seeking a match; they make a pretty
loud buzzing noise. The tuning cycle will end in a few seconds with the LEDs indicating the final
match. At the end of a full tuning cycle, the LEDs will scan inward from both ends to indicate a
successful tune to an SWR of less than 1.5
, and will then indicate the final achieved SWR.
Unkey your transmitter or transceiver and reset to your desired power if you changed for tuning
−
you’re ready to operate. The new tuning parameters are stored for the present operating
frequency, replacing the oldest of the five parameters that were previously stored for that
frequency, if any.
If you try to run a full tuning cycle when the SWR is already below the Auto tune threshold, the
LEDs will blink twice to indicate you already have a match, and no tuning cycle will begin. If
insufficient RF is present, all LEDs blink three times, and no tuning cycle will begin.
Memory tuning cycle (medium press)
If you are tuning near a frequency at which you have already completed a tuning cycle, you can
reset the tuner very quickly by using a Memory Tuning Cycle. Key your transmitter as described
above, and press and hold the Tune button for .5 to 2.9 seconds (two outer LEDs lit), then release.
The tuner will automatically check for a saved tuning setting, and if present, will restore that
setting in less than 0.1 seconds. 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, your Z-11Pro “learns”; the longer you use it, the more closely it adapts
itself to the bands and frequencies you use. If insufficient RF is present, all LEDs blink three
times, and no tuning cycle will begin. You will probably use Memory Tuning most of the time; it
takes advantage of any stored tuning settings, but automatically defaults to a Full Tuning cycle if
no stored data is available
Bypass/Recall mode (short press)
To place your Z-11Pro in bypass mode, press the Tune button less than a half-second. The tuner
will switch to bypass, and all LEDs will flash three times to confirm bypass mode. In bypass
mode, RF from your transmitter goes directly to the antenna with no matching. A second short
press recalls the last tuned setting; all LEDs flash once. Repeated button presses will toggle
between bypass and recall; repeat as necessary. Bypass followed by
Func
then
Tune
will clear
the present memory. Bypass mode is not saved when you power down. On the next power up, the
tuner will reset the last tuned settings. You can, if you wish, press
Func
then
Tune
to save the
bypass setting, erasing the oldest of the four memories for the present frequency.
4
LDG's chief engineer, a fan of Snoopy in the Peanuts comic strip, calls this the "Happy Dance".
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