LDG pioneered the automatic, wide-range switched-L tuner in From its laboratories in St. Leonard, Maryland, LDG continues to define the state of the art in this field with innovative automatic tuners and related products for every amateur need. Congratulations on selecting the LDG Electronics ATPro watt automatic tuner. The LDG ATProII is our flagship automatic tuner. Made for QRO hams, it will handle 1, watts SSB or watts FM/Digital from MHz. Like most LDG tuners the ATProII operates automatically, beginning a tuning cycle whenever the SWR exceeds a preset limit. To protect its circuitry, the tuner will not tune at power levels above Estimated Reading Time: 3 mins. · I started with a manual tuner, went to an LDG non pro. It works just fine. I went back to the manual tuner, because I just like playing with the knobs. I had a chart at the last QTH for it. I am a band jumper it never took more than 10 seconds to roughly set it, then fine tune it.
The AT Pro is an upgrade from LDG’s previous AT kilowatt tuner, in that it now supports fully automatic tuning (Just talk and it tunes!) with frequency-based memories for high power amplifier applications. TUNER SAFETY WARNING The AT Pro internally switches a very large amount of radio frequency energy. The ATProII is designed to handle watts of output power, and is ideal for use with small outboard linear amplifiers rated up to watts, or even newer high power transceivers. The ATProII also features LDG’s advanced memory tuning, providing 2, memory locations; when tuning near a previously used frequency it will recall the settings for nearly instant tuning. It learns your favorite frequencies and bands as you use it. You can also start a tuning cycle manually whenever necessary. Easy to Read Bar Graph.
Two selectable antennas. memories for each antenna. Dedicated keys for manual fine tuning. Technical Data ATpro II. Watt max. power. MANUAL REV B. PAGE 1. LDG ZPro II. Watt Automatic. Tuner. LDG Electronics. Parran Road. St. Leonard MD USA. Phone: AT PRO OPERATIONS MANUAL MANUAL REV A PAGE 1 LDG AT Pro w Automatic Antenna Tuner LDG Electronics Parran Road St. Leonard MD USA.
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