XieguXPA125B 100W Power Amplifier Auto Antenna Tuner Large Display Screen

Can hit this guy with .2-.5w and see 80-85w pep out! So 2-3w or that 5w qrp rig will excite this guy to full power. If swr is ideal and tuner is at a minimal reflect, also depending on band of operation, an easy 100w+ is obtainable with this unit! Up to 125w pep shown on display and is accurate with swr, band, tuner, amp, voltage. Input swr and output swr with watts simultaneously displayed! Great tuner with what we believe is a 10:1 capacity! Not many do this! Works on 160m fine. 43ft worked great but only needs the 4:1 to work. Value for money and functionality! Just an awesome lil amp! One thing I’d add is that silent but turbo muffin fan or two!!! ;) cheers 73 w8rbj

I think it would been great if it worked. Sent back.

Great addition to g90. Works great!

Check out the YouTube video from TRX Lab entitled "#270 QRP PA Xiegu XPA-125B, defect ATU?" There he describes a method to consistently allow the amplifier's built-in tuner to tune the attached antenna. Bear in my that my barefoot Xiegu G90 never had a tuning problem with the same antenna, but the XPA125B complained of high SWR on all HF bands. When the steps in this video are followed, it results in a consistent tuning procedure on every 10-160m band! Here are the basic steps. 1. Turn the PA function off and the Auto ATU on. 2. Change the radio's modulation to AM or FM (CW apparently cannot key from its mic PTT). 3. Increase the radio's power level to 5W. 4. Key the radio and simultaneously press and hold the ATU button for 2 secs to perform an autotune. Note a final acceptable SWR value. 5. Decrease the radio's RF output power to 1W and turn on the PA function on the amplifier. 6. Rekey the radio now in AM or FM and observe the PA output of 80-100W (depending on the band). 7. Return the radio's modulation to your normal operating modulation scheme. Too bad the manual is horrible. The steps to tune are convoluted. Maybe Radioditty can rewrite the manual like they did with the G90 to actually make sense. This would probably prevent a lot of unnecessary returns of what is probably the best HF 100W amp/ATU value on the market!

I got this to use with my IC-705. First, it's so heavy I'd never use it for portable operation, I'd just take my old IC7000 (much lighter than the 705, amp, etc.). I got the amp cable off of Ebay and it works for the amp only, but takes up the accessory jack so as far as I can tell is I can't link the tuner to my 705 when I use the amp. Tuner is limited in ability. I used my home QTH dipoles and they appeared to tune ok (1.0 - 1.3), but with the amp on went up and I got the warning message. My LDG PRO tuners work fine on these but they'll tune a 10:1 SWR. I did tune (my pre-tuned) 10M solarcon 2000 and did transmit with no issues. Note that my QRP MAT-Tuner tunes the dipoles just fine on 5 or 10w. Display is decent, comes with a handle, but I'd hardly consider this nice for portability due to the weight factor.