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QCX Mini WSPR Without a GPS
While waiting for cables to arrive to hook up my QLG2 to my 30 meter QCX Mini, I tried WSPR absent a GPS in line to lock the clock. I set the clock manually via the onboard QCX Mini menu by watching
By Bill Jobes · #125773 ·
Re: #qmx #firmware 1_00_020 released: minor stuff and bug fixes #qmx #firmware
Thank you Hans!? I've been greatly enjoying my QMX+!? :-)
By Dj Merrill · #125772 ·
#qmx #firmware 1_00_020 released: minor stuff and bug fixes #qmx #firmware
Hi all I released firmware 1_00_020 for QMX and QMX+ which you can download at http://qrp-labs.com/qmx and there is also an updated operating manual for this version. Please note, this is a minor
By Hans Summers · #125771 ·
Re: QMX Rocks!
I agree 100%. It's a ton of fun and surprising the amount of DX that is possible given the conditions and the power of FT8. Since mid-May I have worked 23 countries and completed the 13 Colonies clean
By James N7CQ · #125770 ·
Re: Special considerations when sourcing replacement capacitors? #qmx
I also had a bundle of caps in my drawer, but I decided it was best to buy the right ones, Look at
By w8gu@... · #125769 ·
Re: QMX+ audio amp/speakers
Thanks for your reply Dan. I had considered shielding but before doing that I decided to take the time to run all of the diagnostic sweeps on all bands with and without the speakers sitting on the Dev
By Randy Paulson · #125768 ·
QMX Rocks!
I've been using my mid-band QMX for several weeks on CW and FT8 (mostly CW) and have had a lot of success, the majority of my QSOs coming with US stations. But today I ventured up to 15 meter CW and
By Jim Bennett / K7TXA · #125767 ·
Re: Special considerations when sourcing replacement capacitors? #qmx
na5n PDF Document · 1.7 MB Sent fromj my iPhone
By Ed Kwik · #125766 ·
Re: My QMX+ has a .3 ohm short on VDD
Dear David, Board tapping is a good method in finding an intermittent connection sometimes. I have done this with some success in the past. You might help narrow down the area using a narrow
By Gregg Myers · #125764 ·
Re: Defective PCM1804
Most devices are tested at the die stage of manufacture, but not many devices are 100% tested after packaging. Over 50 years of designing and have pcb assemblies made, the failure rates are
By Robert Stephen · #125763 ·
Re: Defective PCM1804
That leaves me one idea to explore, but I'll have to build the kit and measure transients to check it.
By Chuck AI7SY · #125762 ·
Re: My QMX+ has a .3 ohm short on VDD
Dear Greg. My resistance measurement comes and goes.... when it isn't .4 ohms it is about 2.4kohms... tapping the board makes it change.? I have gone back to the work bench and rechecked some solder
By David R. Hassall WA5DJJ · #125761 ·
Re: Defective PCM1804
In my case, I went out of my way to ensure that I had proper ESD procedures in place when I opened and assembled my kit. Wrist strap, anti-static mat with grounds. The unit powered up perfectly the
By mux_folder2001 · #125760 ·
#qmx #qmx
Hi All I finished my QMX+ build on June 28. After some tweaking on the LPFs it was on the air and working well. I worked the 13 Colonies Special event? with the QMX+, worked all 13 colonies and
By Bill Stauffer · #125759 ·
Re: Defective PCM1804
Both my QMX builds came in an anti-static bag. The instructions do say to observe ESD precautions, but the boards see quite a bit of handling by the builder to separate the various sub-boards and
By va3rr · #125758 ·
Re: Defective PCM1804
Doh! Indeed it is. What I was seeing was the prototyping board through the bubble wrap, now that I've got the thing completely unpacked. That rules out my shipping idea.
By Chuck AI7SY · #125757 ·
Re: My QMX+ has a .3 ohm short on VDD
Dear? Ludwig, thanks for the links.?? I got them yesterday and used the information to try to log into the diagnostics... I did get the hardware page and some helpful information. thanks for
By David R. Hassall WA5DJJ · #125756 ·
Re: Defective PCM1804
Hello Chuck The main board IS anti-static packed... 73 Hans G0UPL http://qrp-labs.com https://www.buymeacoffee.com/g0upl [email protected]> wrote:
By Hans Summers · #125755 ·
Re: Defective PCM1804
Wolfgang Pauli once said to Niels Bohr after a lecture "Your idea is crazy, but is it crazy enough?". My kit arrived Monday, and I've been finishing a 1.25m repeater before starting (think of a horse
By Chuck AI7SY · #125754 ·
Re: Another QMX+ got onto the air + Low Tx Output
Thanks Jim, let me know if you find anything... 73 Dave G4FAW
By Dave Cutts · #125753 ·