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Hello Rasmus Apologies for the delayed reply. I'm still catching up. The Rev 3 PCB for the 50W PA kit is quite different to the Rev 2 PCB, in so far as many of the "normal" size and wattage resistors,

Hello Brian, it looks like you have, at least, one bad solder. Starting the resistance between the wire and the pad was high. By pressing on the solder with your probe sometimes the contact became

Hey Roy, I did build a 12V QMX, and I will check that tonight - thanks. 73 Brian K0IK

Caleb, This looks great!? I can't wait to print them. Mike, KL7MJ

Hans, Could you make the QMX terminal RF sweep feature fixed scale, ideally selectable? When adjusting the coils and then sweeping again it's most confusing that it auto-scales.? I have been

I use a small 3s LiPo drone battery. Specifically I use the Turnigy 9xR battery which is 2.2 AH, and has a built in BMS that has overcharge, over discharge, and over-current protection.? Most drone

Hi Brian. Just as a precaution, be sure your QMX's total current draw in receive mode is around or just below 100mA with a 12v supply. (it may be a bit higher if running a lower voltage). Of course my

In my opinion this is not an engineering question, but a product / marketing question.? It was a decision to offer 2 options. I "believe" a big part of that decision is that many commercial rigs are

Hi Dick It's possible, I can arrange it. I'll contact you off-list to set it up. 73 Hans G0UPL http://qrp-labs.com https://www.buymeacoffee.com/g0upl [email protected]> wrote:

Is it possible to place an order and in the shipping part of the order just insert 'Dayton' for shipping info.. then pick up at FDIM or the main Hamvention venue ? Thanks and 73 Dick W4PID

Hello Hajo Then I hereby add it to my ToDo list, to implement some kind of visible sign for WSPR beacon mode, that transmission has been de-activated! 73 Hans G0UPL http://qrp-labs.com

Hello Hans, - Never read the full chapter, for I thought it only is a protection against higher voltage. - QMX Measurement equals not my measurement and when you are in WSPR-mode there are no signs

I think having a couple pins and female headers spare is always a good idea if you work with this type of kits/projects. They can be ordered on aliexpres, for only a couple bucks you get hundreds of

Well, after reading this message I went over to the bench where the transceiver was sitting after I made my last measurements of the FWD and REV voltages, plugged in the power, turned it on, and

Hello Hajo Refer to page 44 of the operating manual. There is a setting in the "Protection" menu called "Supply voltage". There are "Min voltage" and "Max voltage" settings, which default to 7 and

Just wanted to post that I have remixed SP7Q's design for rails and cover for the QMX. I printed his design and though it worked out great. However, The rails as they were originally designed didn't

Hi, this does sounds like a better plan. Now that I think more about it, I have a DIL IC removal tool that could be used to slide the plastic up. Cheers

The male side- carefully wedge up and remove the plastic. Heat and remove each pin. Generally the pins can go back into the plastic and the connector re-used. Not so for the female side. Larry KB3CUF

Thank you so very much Mark for your reply and pictures. I will need to somehow remove the center wrongly placed male pins then. I have found in the past, if I use a destructive method on the pins I

Sorry, please delete point 2 of my last post. I made a simple and annoying failure.