Hello everyone, my new qcx mini arrived yesterday. now the assembly begins. Thank you very much Hans. 73 iu8eun Joseph _._,_._,_

Has anyone got experience with different antenna tuners for the QCX? I am looking for something that will work well with a variety of home brew and improvised antennas. Right now the best options look

Hi, All I have a couple of older U3S ATmega ICs that I replaced with newer firmware versions. Is it possible to load the VFO/SigGen firmware on these ICs? I have Arduinos and a USBasp device with AVRD

I noticed on the QCXmini PCB there are resistors labelled R244, R245, R246 and R247... but they are not shown on the circuit diagram nor in the parts list. Are these just 0 ohm resistors, i.e. a wire

A few days ago, I loaned one of my QCX radios to a mate so he could see how it worked. He is interested in starting WSPR himself and we programmed his call into my QCX40 classic and he ran it for a co

I plan to add a gps module to my QCX to ensure frequency calibration and correct time but for the time being I am setting the clock manually each time I do a wspr session. Each time I change a (any)

With apologies if this has already been answered elsewhere, but having conducted a search through group messages I failed to find the any comments on this topic. I have a QCX classic which I am consid

I was cementing in a base for a vertical antenna and needed some water to activate the quick setting Sakrete mixture. The following is what happened, I was lucky it hit me in the knee, and not in the

Hello, I have had some success modifying my three QCX Classics to have AGC to prevent eardrum overload. I've tried to keep it simple and so it uses only 6 additional components, 3 capacitors, 2 diodes

Some help please, I am having an issue with the alignment of a recently built QCX mini on 20m. I can not get a tone for the BPF peak, my level is at a constant 3 with no audio coming from the headphon

I just finished my U3S PCB Rev 4 with the LPF Relay Kit PCB Revision 5. I have the Si5351A Synth. I also have the QLG1 GPS. Bands are: U3s Main Board 0 = 80M LPF Board Rly 5 = 40M LPF Board Rly 4 = 30

The version 2 QCX Mini got here yesterday evening. Built it today with absolutely no problems. Went together in a reasonable amount of time (nowhere near as fast as Hans can build one) and all the ali

Has anyone been able to replace IC!, surface mounted, successfully? If so, please give me your secrets. I have a Hubal magnifying lighted desk lamp and needle soldering iron by the way. An and also a

After missing connections several times in Grace Hollogne due to what they called “natural causes”, jit just showed up via FedEx a few minutes ago. The main board looks really decent and with that 78M

Can someone please tell me the part number for the QCX volume control? One of mine has failed. Thanks, 73, Jim AJ8S

Hi It’s a QCX REV 2 board Firmware V1.0c. dated 2017. 3 Output BS 170’s fitted. It has been working fine mostly as a 20M WSPR beacon. Anyway yesterday I found there was no power output. It was just co

Check the QRP labs site. That will give you detailed info. Shipping time on built up kits can be long now. You can email Hans and he will respond to your questions.GL, Gary W0CKI

I am starting the build for the qcx-mini (20 meters). Noticed that the main board is different then the manual. c21 and c22 are both vertical and so is d33. Am I on the rite track following the markin

Hello Mike do you still have these? I am interested in both -- 73 Cristian IU2OZO

My QCX+ 30M kit works great when I first turn it on, but after a few minutes the audio begins to get scratchy sounding and then completely fades away. After the radio has been off for a number of hour