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I went to a local (Florida) park over the weekend with the QMX+ and an MFJ-1979 telescoping whip. The whip is 5m (17 ft) tall - a 1/4-wave on 20m, and on higher bands when retracted appropriately.

Hello, I'm here :-) Not really a design improvement, more a comment to the existing system. The BMS I got from Am... is not really doing it's basic job, or at least what I would have expected. I

Cal, I meant, for your group buy fell free creating a new thread :) -- 73, Sardar (AC8L, 4K6SA, VA3DUA).

It would be helpful for me to see a 2-channel oscilloscope trace of pin1-IC405 with pin1-IC406, and pin7-IC405 with pin7-IC406, to see the 90-degree offset, and any relative voltage offset between

No problem--I'll use the one you created. Not a big deal! 73, Cal (AD8Q)

Thanks Jonas, this problem is solved! 73 de Zrinko Ivan, 9A7AM

I am building the QMX and am winding the L401 torroids. Because I have the 15m-60m kit, the L401 is two torroids. Even though I double-checked my torroid windings on the L401A torroid, after soldering

I think that ship already sailed :) I created new threads, you can go ahead and do the same and we can let current thread die naturally. There are too many messages anyway :) makes it difficult to

Ha--yes...sales, marketing and (non-profit) finance! ;) Or we can do the opposite--keep this thread developmental and you or I could start a new thread. That makes the most sense to me. After I

/g/QRPLabs/topic/abs_for_qmx_atu_design/109650769 Here is a second thread for ATU improvements. Hashtaged #ABS and #ATU. Hope we are not hijacking Hans's forum :) Seriously, he should

Placeholder for ABS solution's Automatic Antenna Tuner design improvements over version 1.1. -- 73, Sardar (AC8L, 4K6SA, VA3DUA).

/g/QRPLabs/topic/abs_for_qmx_battery_charger/109650632 New thread on Battery and charger improvements over ABS version 1.1. Created a new hashtag #ABS :) -- 73, Sardar (AC8L, 4K6SA,

I have a Low Band and a High Band QDX I would like to sell. Both were tested on 9 volts and a Lipo Battery, 13.3 volts into a dummy load and tested on an antenna for spots. I have only used these as

Cal, Stan, Could you draft your schematics on a piece of a napkin and submit a photo? I am not sure I am visualizing your ideas over the messages? -- 73, Sardar (AC8L, 4K6SA, VA3DUA).

To me - version 1 design is frozen :) Unless catastrophic discoveries are made with new PCB's that less likely :) However, we should continue improvement discussions - that is the sweatiest part of

Hi, Set "Band limits" to "None". P.51 of the operation manual v.26 refers. Regards, Jonas Den m?n 18 nov. 2024 kl 19:21 skrev Zrinko Ivan Vukoja via groups.io <ivan.9a5czi@...>:

My new QMX has a strange tuning problem on 60m only. It is not encoder problem. Tuning has pattern that it follows and it is repeatable. You could see it on this short video:

Quoting myself (again)...and hopefully more accurately asserting: The BMS is not a charger. The Drok regulator AND a suitable power source provide the missing charger functionality, as might the

I completely agree, Cal.? Thank you for the great work you are doing. Stan

Stan, RR--I'm not going to cut the center pin from MY main board! I'm quite happy with my power cord inline Drok adjustable regulator solution to these problems. With the correct settings on the V and