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AT-200PROII LDG Electronics Automatic Antenna Tuner 1.8-54 MHz, 5-250 Watts SSB and CW. 100 watts on 6M. 75 watts with PSK or Digital Modes. 2 Year Warranty

  • Based on 45 reviews
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Availability: Only 8 left in stock, order soon!
Fulfilled by GigaParts

Arrives Oct 25 – Oct 31
Order within 12 hours and 26 minutes
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Features

  • 5 to 250 watts SSB and CW. 100 watts on 6M. 75 watts with PSK or digital modes. - Easy to read LED bargraph display for RF power, SWR and status
  • LEDs for Antenna Position and Bypass - 4,000 memories (2000 for each antenna) for instantaneous band changing - Two position antenna switch with memories for four antennas on each position
  • Tuning time: 0.5 to 6 seconds full tune, < 0.1 second memory tune - Built in frequency counter for memory operation
  • Frequency coverage: 1.8 to 54.0 MHz. - Tunes 6 to 800 ohm loads (16 to 150 ohms on 6M), 6 to 3600 ohms with optional 4:1 Balun (LDG RBA 4-1) - For Dipoles, Verticals, Vees, Beams or and Coax Fed Antenna
  • Includes 6' DC power cable - Enclosure: 9.5D x 7.1W x 2.0H inches - Weight: 2 pounds

Description

The LDG AT-200ProII is a general purpose automatic tuner suitable for any amateur application. It covers 1.8-54 MHz, and features a two-position antenna switch allowing instant switching between two antennas. The AT-200ProII requires just 5 watts for operation but will handle up to 250 watts, making it ideal for the new generation of higher powered transceivers, or for QRP operations that sometimes use a small amplifier. Like most LDG tuners the AT-200ProII operates automatically, beginning a tuning cycle whenever the SWR exceeds a preset limit. The AT-200ProII also features LDG’s advanced memory tuning, providing 2,000 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. Large, easy-to-read LED bargraphs show forward and reverse power power in peak or average mode, and SWR. Two power scales are provided: 25 watts and 250 watts. The bargraphs also indicate tuner status and input confirmations. The AT-200ProII uses LDG’s state-of-the-art, processor-controlled Switched-L tuning network. It will match dipoles, verticals, inverted-Vees or virtually any coax-fed antenna. The LDG AT-200ProII is designed for this new generation of rig. It's specifically recommended for Ten-Tec and tube radios. Many QRP operators have a small 100-150 watt amplifier for times when you need a few more S-units. The AT-200II is ideal for this kind of operation; it’s minimum required power is only 5 watts, but it will handle the higher power as well. You can also use the AT-200ProII with longwires, random wires and antennas fed with ladder line with the optional LDG balun. Operation couldn’t be simpler: while transmitting a carrier, just press the Tune button. An automatic tuning cycle will begin, a few seconds later the tuner will be set at the lowest SWR (almost instant for frequencies stored in memory).

Compatible Devices: Laptop, Radio, Desktop, Tablet, Smartphone


Connector Type: RCA


Brand: LDG Electronics


Connectivity Technology: Radio Frequency


Color: Black


Brand: LDG Electronics


UPC: 702685258508


Unit Count: 1 Count


Manufacturer: LDG Electronics


Number of Items: 1


Item Weight: 2 pounds


Model Number: AT-200PROII


Mfr Part Number: AT-200PROII


Compatible Devices: Laptop, Radio, Desktop, Tablet, Smartphone


Connector Type: RCA


Connectivity Technology: Radio Frequency


AntennaDescription: Radio


Tuner Type: Digital


Color: Black


Item Dimensions L x W x H: 9.5"L x 7.1"W x 2"H


Frequently asked questions

If you place your order now, the estimated arrival date for this product is: Oct 25 – Oct 31

Yes, absolutely! You may return this product for a full refund within 30 days of receiving it.

To initiate a return, please visit our Returns Center.

View our full returns policy here.

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Top Amazon Reviews


  • Perfect Tuner for your Amateur Radio Antenna needs.
This little antenna tuner replaces my old TenTec manual tuner that decided not to work any longer. I guess I didn't know what I was missing all these years with a automatic tuner versus the old school method that I had with the TenTec. Although the TenTec will survive many more output watts from larger transceivers, this little bugger will take 200watts continuous which ain't bad. My only complaint is the manual is not the easiest to understand when a unit like this has multiple process buttons to operate it. I resorted to LDG's YouTube channel to fill in the details which they did quite well. The unit can be used with two radio's via a direct link, one Yuasu and one Icom. But only those two and no others. As described in the title it is automatic and tunes when it senses a carrier wave. You will either have to whistle or talk for it to tune or you can use a More key or paddle or switch the mode to FM or AM in order to send the signal. Either way, it only takes, at the most, two seconds to tune a difficult antenna. Ideally, most trip-banders will not need a tuner, but if you have to tune a WARC band using the trip-bander, you will most likely need a tuner. The tuner is also good for wire antenna's either a G5RV or a Windom or a stealth wire with a balun. It runs off of 12vDC so will operate off of a car battery so can be used mobile which is good for those rascally whips. For the money and the size, I don't know how I got along without the LDG AT-2000PRO all these years. ... show more
Reviewed in the United States on August 21, 2015 by D. Michael Sanford

  • Great value and works great
I needed a wider range tuner to match my IC 775 DSP to some antennas that were out of range of the 3:1built in tuner. This one does the job quickly and with little fuss. It hasn't failed on any reasonable attempt. I set by accident my 10 meter vertical while on 40 missing the Vertical it failed to match but it had to be extremely out of range my fault not the tuners. I caught it and was turned up and on the right antenna and 1:1.5 to one in under a second. It beats my old manual Versa Tuner in speed when you choose the right antenna hands down. ... show more
Reviewed in the United States on June 11, 2021 by ARES/Races/guy

  • at 200 pro11 LDG
Excellent
Reviewed in the United States on July 30, 2026 by Ronnie

  • Happy ham recommendation
So far so good. Working as advertised on coax fed 75 meter horizontal delta loop. Noisy but nice when it matches around the bands except. Loop not long enough for 160 meters.
Reviewed in the United States on November 5, 2017 by Amazon Customer

  • I love this tuner!!!
My Yaesu FT-991A and Kenwood TS2000 both have built in tuners. This tuner provides a much better mach of my random wire, on the fly. I do alot of FT8. When I switch bands the tuner automatically tunes/learns the band. You can also fine tuner the band manually and store it. The tuner remembers it. With the internal tuners I could not tune 60 &160m. 80 & 40m had hard time tuning... not with this tuner. It tunes my random wire on 6-160m with no issues once it learns the band. ... show more
Reviewed in the United States on December 8, 2024 by Joe R.

  • LDG makes great tuners. Always been a fan.
This does a great job at matching my antennas to the frequency I'm working. It's a little noisy when it's tuning but drops the SWRs nicely. I particularly like the ability to manually tweak the setting and store it.
Reviewed in the United States on July 24, 2025 by Chris Lonsberry

  • Excellent piece of eqipment
I use this product in my hobby. A very useful piece of equipment and highly recommended. easy to use and set up. Nicely finished in appearence.
Reviewed in the United States on September 6, 2019 by Bruce ZL 3 KK

  • Excellent product.
This little box is really really good at matching my crappy antennas. I was using a manual one and bar none, the LDG is not only faster(Dah...) but was able to match antennas that I never could. I would highly recommend it.
Reviewed in the United States on April 14, 2015 by Alex Ponce

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