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I just joined the group after ordering a QMX kit. If possible I’d like to build it from the outset for the band groups stated above. I accept that this will require total redesign of the filters.

Hi Kristoff, et al, re... coax antenna connection Take? lQQk at this https://qrp-labs.com/ultimate3/u3mods.html#ant COAX but no connector to fiddle with 72 John N3AAZ

Hi Dennis Ok yes, I suppose D101 doesn't necessarily blow every time. The 1N4148 absolute maximums specify 2A for 1us, 150mA avg current, 0.5W dissipation... If the abuse was short enough and/or you

I have also used deepL to translate legal documents from French into English. A little post-editing is sometimes needed but the results are more intelligible than the original. John F5VLF

https://youtube.com/watch?v=W9F7_y3SiV4&feature=share 73 Hans G0UPL http://qrp-labs.com https://buymeacoffee.com/g0upl

Hello Everybody I recently finished the assembly of a vanilla 40M QCX-mini kit... ** I put power to it (9v from wall wart) and.... Boom, works as expected. Yay, me! I took a leisurely week, a couple

Well, I have built a QMX after successfully building a QCX plus and a QDX. Got through the smoke test, and loaded the latest firmware. After uploading the firmware, the LCD came on and now the unit

The RX curent seems too low to me. I have no idea what is the unit to unit variation but mine takes 98mA at 9V with the backlight on. Without the backlight it drops by about 9mA if I recall

Charles, I think that clock generator needs to be replaced. JZ KJ4A cjohnson@...> wrote:

Yes, I have the trim pot turned full left (counter-clockwise). That's the only position that gives legible contrast. And it looks like I was premature in saying the problem has worked itself out.

To all, My apologies for the large type in my previous post. I wrote it in the Notes app on my iPad and when I copied and pasted it, despite my best efforts, I couldn't make it smaller

Hi John Please post your Basic code that is creating an error? here, and the error code are you getting, and I will try and duplicate it and look for a solution. Dave VE3KCL

Reporting back. I needed to raise the audio gain in the QMX band configuration menu from 54 to 60 to get about 30dB noise floor on an empty waterfall (WSJT-X reports 32dB). Now when I record on a busy

Many 40mm DIA 32 ohm speakers available on Amazon:? Search on 40mm dia 32 ohm speaker? and you will find dozens. (

Weird.? Have you tried adjusting the blue pot to the left of the screen, regardless? Jason / K1LOL

Hans took the time to created a great QMX schematic on the QRP Labs website including component numbering which corresponds to the page number of the schematic. For those of us trying to help and to

Hi Hans, You're right, of course, about the 6dB per bit. But I think Audacity may be confusing things a bit (seems to me that Audacity is off by a factor of 2). Let's look at it a different way. The

Mystery Solved: Bad Q505 (BS170) was conducting when off.? During startup, before the first transmit,? the PA voltage control provides full voltage to the PA transistors even though the QMX is in

Marek, did you install the jumper between the two points labeled “28”? Ron

I just submitted a ticket for a missing microphone. I was lucky enough to be missing a part that doesn’t matter right now! Mike WM4B Sent: Saturday, August 12, 2023 6:36 PM To: