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Pierre, Sounds like four 26650 cells, side by side. Could work out well. I see slightly over 31mm above the dev board to the inside of the top cover, almost 32mm. Mounting the LiFePO4's to the dev

What is the usable height above the dev board once installed in the QMX+ standard enclosure? I plan to build a complete QMX+ and use the dev board to install: - a set of four LiFePo4 batteries

Hello, Has anyone tried using a 11.1V battery on the QMX?? Fully charged the batter has12.7 volts. Thank you, Brian K?BWH

I hope it is ok to revive an old thread, but I just stumbled upon it. Replacing the SS14 with 2 BAT54 in parallel solves this issue. See: /g/QRPLabs/message/139720 Power levels read

And the current it pulls, as mentioned. About 1A @ 9V for a 9V build. Would be less, like 0.7-0.75A on a 12V build, I believe. -Nate N8BTR

Down to $90 here now. -Nate N8BTR

Thank you all, I'm happy to hear that there is a general acceptance that they can exist and it's not only a misunderstanding on my part. What could be the reason though? And why such a large

I bought a used QMX, and the seller forgot if it was a 9V or 12V, he had built so many and lost track.? I opened it, took a picture of T501 from the side with my phone, and enlarged the picture.?

George, The NaP3 has good CAT control with QMX on CW, DIGI, and SAM modes. The CW filters work very well with adjustable bandwidth from 1.0 kHz down to 50 Hz. The NaP3 CAT Control tuning works in

Guess I could do that...didn't process that it would work at 9v with the 12v winding just be low output. I'll have to figure out a way to hook it to a bench supply because I don't have another 9v

Just a WAG here, and not a technical one - why not power it up with 9v and use PuTTY and a dummy load to see how much power it generates. Seems like if it was wound for 9v you should get full 4-5

I have an old QDX I started building years ago (Rev 3) and I wound the PA transformer...and promptly forgot if I wound it for 12v or 9v. I'm looking to work on finishing it now and reading the

So far, all my v3 builds have had this problem. All my v2 builds never.

The markings of the old and new Q516 are the same (if i remember correctly “6C”).

Todd, Yes, it did not really start on subject and, as often happens, veered off in all directions. Most of us are guilty with side comments and follow ups. Unfortunately the only way to

I have no objections to having a discussion. And that includes your post. Any "official announcements" on the QMX/QMX+ are easily found on qrp-labs.com Having a separate "official announcements"

This thread, "Any update on SSB?" is hilarious. It's (misleadingly) the most active thread on the groups.io these last couple days. There's lots of interesting/useful discussion in here. But it takes

New QMX(+)'s leave the factory now with firmware. A "factory reset" never did erase firmware, just reset any user settings to their factory state. Jerry, KE7ER

With Paul's permission, I have created a repository for his new Morse decoder at https://github.com/pflarue/MorseDecoderPro using a maximally permissive BSD Zero Clause license. This is an improved

On Wed, Mar 12, 2025 at 06:16 PM, <ha7rja@...> wrote: > > "I may be a language thing..." needs to read "It may be a language > thing..."