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Finally managed to connect my self-built QMX+ to an antenna that my ATU-10 was able to tune and the radio works like gold. 4->6 watts is not much, but it will last if you are patient. Had to turn off

Yes--I see Steve. Looking at my QMX+, which has its lid off, ATM, it appears to be tough/risky to attempt to connect a VNA to an LPF. Lifting one side of the? 470k SMD 201 resistor might work but I

Hmmm, which button are you using to "select"? -mike/w1mt

Selecting 7. Other displays "A 1,820,00" Ron

oops dang auto spell checkers picnic tables John n3aaz

Just finished my QMX+ build and all working fine. Just a couple of observations, Hans is spot on about that ground plane wicking heat away from the iron. ?I increased my 50W iron temperature to 430C

Larry Thanks - appears maybe there are not kits available for the ATU-10 73 Paul

Hi Hans, ok, understand.... good luck for your excellent work and thanks for your fast replay vy 73 de Udo, DF4BJ/qrp

Hi Chris, I believe for QMX, the I2C clock to the MS5351 runs at 1MHz. The logic analyser should work as long as the sample rate is set to 4MHz or above. There may be some limitations depending on the

Hello Udo We ran out of several different things at the same time. I will post a detailed update later. One of the things we ran out of was the sticky cabinet feet. We have a stack of about 50

Hi Hans and Team, no actualization since 3 days.... everything?s good ?? vy 73 de Udo, DF4BJ/qrp

What I'd like to see is a typical healthy plot of the 40m LPF.? The only plot I've seen is on page 88 of the Operating Manual for the QMX. I rewound the 40m LPF toroids and it moved the plot to the

Heating might be an issue if on the finals or over the 78M33.? You could bolt/glue/duct-tape some kind of pocket (a plastic bag?) to the inside surface of the top cover for such docs.? And carry a

Grant:? The meter goes between the transmitter and the load, be that an antenna or tuner/antenna combination.? The loss of the bridge will protect the transmitter from the mismatched load until you

What I do is use sharp side cutters on the body. Break it then remove the pins. 73 Alan G4ZFQ

Chris, Maybe my first attempt, some time ago. https://sites.google.com/site/g4zfqradio/qrplabs_replace_si5351 Despite the apparent abuse, still working. Others have recommended other ways, eg by

Even worse, if you build up a charge while you are sitting down, when you stand up your body capacitance goes down by about half but, since the charge stays the same, your voltage goes up by about

All, ???? Just a reminder to those who try to ground themselves and their kit while assembling - if you aren't using a commercial wrist strap and grounding mat, ground everything through 100KOhm

Hello, I find LY2H's videos interesting and helpful.? Check out his recent video, Nov 30, 2024 - "QMX+ all-band qrp: it took me two to get one working, but it works great now!"

I would like to store a shrunken copy of the QRP Labs final review information inside the QMX + case. I have shrunk it down to 50% or a one half page of letter paper, and folded it twice. I would like