So I don't have my QDX yet, but I'm eagerly anticipating and planning. I'm a POTA guy, and my primary antenna is an EFHW compromise antenna. What tuners are you using? I'm looking at the MAT-705 since

New to these incredible kits and the QRP LABS a learning experience. Built a clock kit with GPS and it worked so good my bride let me put it in our camper. Anyway…. Bought a U4B version 002 firmware a

Hi gang, built up a couple QLG2's when they were readily available, added the display AND a 5 volt regulator that will allow 9 to 15 volts DC input or so to operate the unit. I also 3D printed a case

Good morning Hans. I emailed the support site on the web, but have received no answer. I am missing several parts for the 20M QCX+ kit. I received 6 BS170 transistors, but no MPS751. I went ahead and

Anyone know if there is anyone down Australia or New Zealand way that has recently launched an ocean drifter transmitting on 40m? cheers Graham ve3gtc

I didn't realize the 50 watt amp is only for the QCX. I’m waiting on my QDX and can’t use the amp on a QDX. It cost me $62. I have not opened the packages. Make me an offer. Richard N6IJK

This is certainly nothing groundbreaking, but I'm sure excited seeing people all over hearing my U4B just lying outside on my deck. I'm running from a 3.7 Volt LiPo and HP=1 Here, if you don't want to

My 30m QCX+ rig was up and running for a couple of months, with no problems. While connecting the power plug (after moving it's location on my bench), I inadvertently touched the dc connector (hot wit

Off to Hamvention in a few days: Ordered one of the last available. Question: I want to build it for the 630M band. That means not installing all of the great engineering Analog RF stuff that he has p

So I have a QCX, putting out 2.89 watts per the dummy load test procedure. It goes into 50W amp. Output from the amp seems low, but that is question for another thread. But given the 2.89 watt input t

The kit has arrived! Amazing less than two weeks from Turkey. Well packed and the Mug and shirt are terrific. For the first time, I feel proud to advertise someone else's company! 73 Bill

Does anyone know where I can get a replacement bulk head connector for the QCX Mini that will fit (size, spacing, etc.)? There are many out there but I don’t know the correct dimensions or manufacture

K6JTH was kind enough to send me a sample of his 3D design for a QCX-mini stand and I’m impressed. Good design combines the simple with the versatile and this is both. Hans might want to look into off

I've recently become interested in Digital Modes on 2 meters. (Trying to communicate with my son 8 miles away .. HF NVIS has been problematic). I tried to find some cheap SSB 2 meter rigs to test the

Are there any resources on communicating with external I2C sensors using the U4B? I was looking at the AHT-20 + BMP280 modules. A link to the modules I was looking at https://www.ebay.com/itm/29469114

Being a newbie, I’m having trouble soldering solar cells together. Anyone have any suggestions? In the meantime I do have some PowerFilm 4.8v, 50mA panels, would this work? The Voc is over 6v. Would t

I have posted two messages by using the "New Topic" form on the QRP Labs Groups.io page. The second was a duplicate of the first when that didn't show up after 2 days. However, none of those are not v

I went through all of the setup. CAT control passes. I believe all of the setting are correct. The LED stays on when it should, blinks when wsjtx transmits. For all intents and purposes it appears to

I finished the QDX and configured everything correctly I presume. (See Pictures) I connected everything, computer (New Dell laptop running Windows 11) sees the QDX. With wsjtx CAT control is there. Wi

I just received my 3 low pass filter kits which I am assuming are the latest Rev2 as marked on the PCB, which have 2 capacitor positions for each cap label (outlined in red in the pic below) However,