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I also have a fair amount of noise on the I/Q diagnostic. Also, the levels (35269) are different than what I've seen in the manual and posted here. But operationally, I have good sensitivity on all

Hi Sam The messages are already retained in memory when the firmware is updated... In general firmware updates don't alrer the settings. They're only erased by a factory reset. Occasionally when I

Joe, I haven’t experienced this problem using a straight key. However, something similar occurs with a paddle and Iambic B with autospace turned on. Maybe autospace? Steve

Bruce, The PCM1804 is likely bad. That chip has been exhibiting a very wide range of failure symptoms in QMX, from subtle and noise related to complete meltdown. Yours appears to be a case of damage

If I understand you correctly, you're looking for the WSPR freqs for each band. Page 35 of the QMX operating manual lists them--or did you already know that? In any event I usually aim for a frequency

Great job. Mike Krieger [email protected]> wrote:

Thanks Karl. You are running the QMX via wjst ?

Mine displays the freq that WSJT-X puts in for the band selected. -- 73 Karl KI4ZUQ

Hans, I don't know if this is a possibility with the firmware / hardware configuration, but... Is it possible that the messages programmed in are able to remain within the eprom when firmware is

Can anyone tell me the SCREEN DISPLAYED frequency by band for the QMX please when used in WSPR? yes I’ve googled it, yes I’ve done all that stuff. I just want to hear what others think. I’m

It is possible but I have quite a few different sized micro bits so use just the size necessary for the part to fit through leaving most of the via intact. It’s just an option and another way to

I have a different version but they all have a 1/8” plug in for wired connection. Be the REASON someone smiles today. Dave K8WPE

Thanks Hans, for adding the links :-) Small update on my QMX+. Like all the cases from QRP-Labs, I really love the QCX+ / QMX+ case. But when you the have QCX+ or QMX+ case it on a desk, the

Hi Peter It might be worth looking at the BLA-350 circuit diagram, there maybe an attenuator before the amplifier stage. This is certainly the case with the Yaesu FL-110 100w amp which according to

I installed a miniature toggle switch in the rear panel replacing the power jumper on the board. Maybe a better solution will come in the future. For now I can turn off the noise when not using the

Thank you for the suggestions. I removed R306 and replaced with a 1/8 watt 900 ohm resistor. On either side of the SMA R306 is a large pad making it easy to solder in a larger resistor. Thank you

Peter , before you jump in the company 60dbm.com out of Ukraine but still working has some nice solutions specifically set up for the machines like Hermes Light and even lower power Qrp transmitters .

Linear Tech's AD8009 highspec VIdeo amp is your friend here - costs about 5 Benjamins each from Chicom dealers . THese have been successfully used as driversfor RD 15HH Mosfets in class A to get 7 W

Ahoy there mon !! as Bob Marley would say .. we are sitting here holding our breath waiting for the story that it was a bad solder joint or a plated through hole (ie PTH that take signals from bottom

So I am making a second post. I recently assembled a QMX. Fired up at 7v limited to 200ma. Loaded the firmware. The transmit on all band is great with 4 to 5w. This is a 60 to 15m model. The problem