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HI, I use the ATU-10 om my QDX and no problem after a year of use, I have the QDX at 10Volt and it gives around 4 to 6 watt. My QDX is built for 12v but I had to reduce the voltage because of power

One more thing: both SMPS are in error state (red fields). But for more information we need the values (see my last post).

Grant, sorry the text is to small and zoom in doesn't help. Could you make a picture from only the part with the text (left upper part of the shown picture)? 73 Ludwig

The wiki page QMX QMX_plus Startup ( /g/QRPLabs/wiki/36878/213997 ) has been updated by @Ludwig_DH8WN <DH8WN@...>. Compare Revisions (

I have noted several kits by Kanga which might of interest for CW operators of QCX+/QMX+ - https://www.kanga-products.co.uk/ourshop/prod_7766713-New-General-Purpose-AF-Bench-Amplifier-Kit.html (a low

Thanks Stan. Here is the screenshot of the main PUTTY diagostics page. I can also confirm that the left and right encoder knobs and the left and right buttons work properly as when I turn or push them

And you need to press the enter key after connecting in order for the QMX to respond with the menu. [email protected]> wrote:

On the QMX, use the menu "Hardware tests -> SWR", which will output a lower-power signal at the current frequency. There is another menu that sets up the percentage of drive voltage it uses, it

Hi, I never get any red light action at all, now. I also have a slightly modified firmware that Hans cooked up for me. I don't remember just what the difference is, but it was working beautifully. It

Hhi, I used a Rigol 1104 oscilloscope with a 10x probe to measure frequencies and voltages. Sometimes a DMM. Jim

Oh. Forgot. The unit was built for 12v and the load was a 50 ohm dummy load. I did burn out the finals and replaced them once. It was working perfectly for months before it went dark. I was powering

Hi Dan, This is a QDX. I monitored the voltages with a digital multimeter and an oscilloscope. The usb interface is totally dead. Tnx, Jim

Hi Peter, The l-match is binary inductor, switched on 0.5uH steps. I have 5 switches (0.5, 1.0, 2.0, 4.0, 8.0). For the inductors I used FT37, FT50 and FT68 cores, all mix 6 The variable cap is a

After adding yourself to the dialout group, you need to log out and back in.

I believe QMX has a tuning mode built in that will reduce output power. Curious about your manual switched L-match design; I'm trying to build one. Is yours a binary coded multi-coil or a rotary

Received my assembled mid-band 12v QMX from Hans. Question about the process of using a manual tuner. I have a QRP Z-Match as well as a homebrew switched inducatance L-match ala VK3YE. What is the

Ludwig,see I have just fired up Putty and connected via serial port to my QMX. Putty seemed to be working but the screen was blank. Here is a screenshot. As you can see, it seems to be doing something

1 - I know I should not use an auto-tuner with my QMX/QMX+ when running 12V due to the transient high SWR which may be presented by the tuner... or at least this is what I have gathered from using the

This stuff is the bomb for improving all kinds of electrical contacts.? Expensive but it doesn't take much, and the last kit I bought years ago still has plenty left.

Thanks Stan. I’ll try that in the morning.