Overview

LDG Electronics Z-11ProII Automatic Antenna Tuners

LDG Electronics Z-11ProII Automatic Antenna Tuners are everything you always wanted in a small, portable tuner that's been designed from the ground up for battery operation. Weighing only 18 oz., they handle 0.1 to 125 watts, making them ideal for both QRP and standard 100 watt transceivers from 160 to 6 meters.

Z-11ProII tuners use LDG's state-of-the-art, processor-controlled Switched-L tuning network. They will match dipoles, verticals, inverted Vs, or virtually any coax-fed antenna. With an optional balun, they will also match longwires or antennas fed with ladder-line.

Frequency-sensing circuitry lets the Z-11Pros "know" your operating band and frequency. These tuners have 2,000 memories that are used to automatically store tuning configurations for each frequency and band… as you use them. Whenever you transmit on or near a frequency you've used before, the Z-11ProIIs re-tune from memory almost instantly. Memories are retained indefinitely.

Full auto mode tunes with SSB. Just speak into the mic, and it tunes! Rugged and easy-to-read LEDs indicate SWR and status. LDG Electronics Z-11ProII tuners use latching relays, which retain the tuned configuration, even when powered down. The current draw when not tuning is effectively zero.

Additional features include:

* Tuning time is 0.1 to 6 seconds full tune, 0.1 seconds memory tune
* Selectable user parameters: auto/semi, threshold, and more
* 1.8 to 54.0 MHz coverage with built-in frequency sensor
* Tunes 6 to 1,000 ohm loads (16 to 150 on 6m)
* Includes 6 ft. DC power cable
* Power requirements are 6 to 16V DC at 300 mA maximum
* 25 uA standby current
* User installable 4-AA battery holder (batteries not included)
* Weight: 1.5 lbs.

Note: For additional information, please look at the files under the "Documentation" tab.

With the list of features above, LDG Electronics Z-11ProII Automatic Antenna Tuners from DX Engineering could just be the best portable automatic tuner ever built!

Documentation