Controlling QCX mini backlight Still looking for some help with this one, According to the OpMan v1.08/1.09 the backlight can be temporary controlled by Double Clicking the rotary encoder shaft button

Here is some information on setting up Linux (Ubuntu and Debian) to work with the QRP Labs QDX. In general, I am very happy with the QDX. It does work well with both WSJTX and JS8call on every compute

Hi All: I'm trying to use a pressure sensor, the MEAS MS5607-02BA with a U4B board - presently in the middle of troubleshooting - right now I'm not seeing any of the contents for the internal ROM cali

QCX MINI working fine but have no back-light. This didn't concern me at first power up as I knew it was configurable in the menu. However having dome some digging I'm a little concerned. LCD pin 15 is

Hello, I have 2 qcx, one is a 40mini the other is a 20+. Both show the same behavior: When controlled via CAT, the battery icon sporadically shows a dead battery... The expected voltage is around 13.9

Sharing a couple of “doh!” moments that have dramatically improved my RX experience with the QDX today. No great insights deserving a Nobel prize but just in case others are facing similar issues. 1 A

I know that Hans has many things going. My QDX-M just arrived. Having been in this Ham stuff for 60+ years, I have a well-supplied back room and fading experience in building. Looking at the schematic

Hi, I have already built an older 80-20m Rev3 QDX. Now I have got the new kit - 20-10m Rev4. I am not sure how to tell them apart when the second is built too. Have anybody found any idea how to do it

I noticed the fourth year of the QSX announcement has sneaked quietly past us. A progress report would be nice… The QDX-mini was fun but despite mods for wspr rx bandwidth still single band…and the QD

"just try calling CQ" - there are a lot of us working FT4 on 10m - just make sure you are seeing stations on FT8 first!

QDX is built. Rx /Tx working. RF output slightly low: 9V supply, no reverse polarity protection diode (yet): 20m 4.5W Est. Efficiency 66% 30m 4.5W Est. Efficiency 54% 40m 4.4W Est. Efficiency 63% 80m

Whoo-hoo - finished up the build on my low band QDX this morning and after a slight glitch with a bad solder joint on the RF jack, its on the air and seems to work fine. Made three QSOs, two on 20, on

The innards on the BNC connector on my qcx-mini has decided to come off / out with the dummy load. Would some 5min epoxy secure it back in there ? Mrs Samantha J Collins LLB MRSLT Dip.Psych

Trying to order another QDX for a student project using WSPR, but at present the QRPLabs shop doesn't even allow me to place an order due to the message "Products marked with *** are not available in

I am repairing a QDX -- One of the final BS170's (Q10) was blown. It appears to be working now, with the exception of the RED LED. When in TX, it slowly fades ON/OFF, at about 1 second intervals (rath

Does the RF filter sweep check both the BPF receive filter and the LPF filter. If the BPF is not tuned to the required frequency, then the RF filter may show an in-correct sweep suggesting a low power

In the assembly manual of the the latest qdx m I noticed in section 2.9 the table describes L2. Shouldn't it be L4 as shown in the diagram?? My PCB is rev5 M Am I missing something? Wes Va3RYV -- wes3

I recently built the High Band version of the QDX and it works just fine except the power output is only about 2.5 watts on 10 meters. I followed the process by KK7ER concerning removing two windings

I recently purchased the QRP Labs BPF kit to support my experiments in RF using my NanoVNA and TinySA Ultra. I have completed 8 of the 10 kits and I am pleased with the results. When I came stumbling

Hi all, Next monday, January 30th will be the first QCX Challenge for this year. see all info on https://www.qrp-labs.com/party.html I will be QRV on 20m and 40m in the 1300Z and 1900Z sessions. 73, L