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Hi Don, if you are talking about the QCX 50W PA the green LED there is tied directly to the DC supply input. So check the power supply! 73 Bojan S53DZ

After about a year of non-use, I decided to plug in my 50W PA.? After plugging in the power, the green LED began blinking rather than staying lit.? I don't remember it blinking and I cannot find

Hi Roger It not everything but if you want to capture the track of your balloon. You can go to your tracking page on QRP-Labs and right click on the header of the map that has the telemetry data then

Hugh, No, because all mine are grounded:-) It seems silly not to ground a metal case. A few have said they had some sort of malfunction, I forget exactly what but they said it was cured by grounding.

I did the case mods that Ken has suggested and noticed a significant decrease in base noise level in the receivers of my QDX and my QCXs.? My radios are all grounded through the antenna connectors to

Hi Rob, KK6PR spots me (AA0JR) every 10 minutes on 15M, and the conditions are pretty good now at around 16:50 UTC,.so KK6PR is not the cause of your problem. He reports a SN ratio of -21 for you, and

Hi all Has anyone seen a significant fall in noise / increase in received SNR on the waterfall after grounding the case of a QDX? I am mindful of the effort Ken G4APB writes about to ensure a good

Hello Roger It's on my ToDo list. I plan to make a download link on each person's balloon tracking page on the U4B page, where you can download a complete .csv page of your flight, which will include

I've got a U4B that I successfully launched yesterday.? The telemetry and map data work great on the qrp labs tracking site, but is there a way to capture this information over time?? For example,

I usually don't post but your topic for backpacking caught my eye.? I am a 2021 Appalachian Trail Thru-Hiker, completed all 2,002 miles including the approach trail from Springer Mountain in

Hi Mike. Sounds like good progress. Alignment of the receiver is a good thing to do but you also need to adjust the lowpass filter toroids in order to improve the power output. The videos are clear on

Mike, That's correct. Sorry, just noticed you mentioned that before. So, If you hold down the T button and get no output, then, yes, suspect a hardware problem in the TX RF chain. Did you also listen

The September 2022 issue of CQ magazine in their Kit Building column, "QDX: A Pocket Full of FUN" written by Joe Eisenberg K0NEB introduced me to the QDX. Andy W3SW

Hi Ron, Thank you for your help. Have replaced Q6 and now it does transmit at just under 1 watt, which I consider a victory. I think the next thing for me to do is realign the set and see what

Tim, welcome to the club. Our building experiences are golden but they are like a new car….. once made it is like the new scratch on the car or the first dent. After that we actually feel better and

Reminder, next monday, Feb 13th, is the monthly *QCX WARC Party*. See https://www.qrp-labs.com/qcxmini/qcxwarc.html for all information. Join the discord page in the #qrp-operation channel to post

Hi Lou/Jim, apologies for the late reply, rather busy with work instead of our great hobby hi. Thanks for the kind offer; I've now been able to rule out the 3407 as being the cause of my QDX issues...

Greg, Yes, Normally a USB device is seen whenever it is plugged in or immediately after a reboot of the PC. But a QDX only tells the Windows PC once, then it needs to be shut down and re-powered. This

Anyone else experience this: MY Example:? I am in a remote are of Michigan, and put out a WSPR beacon at 01:52 UTC (and many other after that) on 15m (not a good time of day for it). I am limited to

Hi Terry and Alan Thanks for your replies. Alan, can you please clarify your comment: " You do know that with Windows the QDX does not work like a normal USB device? It requires a power cycle each