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I hope that tray is ESD safe. Ed AB8DF

My QMX× kit arrived today, and I'm almost ready to go. Other than brewing a fresh pot of coffee, are there any tips or hints regarding this particular kit?

Grant, both the 9 V version and the 12 V version are working well using at least 6.5 V in RX mode and a bit more, lets say 7 V, in TX mode. The only difference is the output. My recommendation is not

You should be getting desense from that distance HI

Hi Chris! It's not the 6 meter season now, although this band was already opened in January. On QDX last year in a couple of months I conducted more than 100 QSO with 32 countries with a power of a

Nico, when building a TX it's a good idea to use a dummy load for testing. You may use something like the QRP Labs dummy. It's not only a dummy. Connecting a DMM to a special connection you are able

I use a QMX with FLDigi, but I have found FLRig doesn't show the output power or SWR. It's like some of the functions don't work when I select QMX. Not all the options show up like the sliders etc.

Hi Nate thanks for the reply. After I posted my last settings for 6m I had a problem after fitting the pcb into a custom case. I lost nearly all rf power out and decided that this must be a dry joint

Pierre, the configuration is saved after saving through the menu of this button -- 73, Oleh, UY2ZA

Jerry, an excellent summary of how it will work! I was able to follow this better than some of the longer form discussion about SSB creation. Thanks for laying that out! -Nate N8BTR

Please share which transformer winding you did. WTST? RWTST? Conventional? The sweep is pretty normal for a QDX HB. 17 and 20m share the same BPF, and compromises had to be made to fit it all in

Yes Jerry is correct. It is true SSB, mathematically. Performance is very high, too. A QMX in SSB mode will be able to do anything a regular SSB transciever can do. 73 Hans

Adam, The SSB modulation scheme that Hans is using generates true SSB. This SSB signal will potentially be cleaner than that from a typical transmitter using the traditional filter or phasing methods

KC1TQY, Please do not hesitate to join in. There is no such thing as perfect CW unless a computer does it. Everyone and I mean EVERYONE makes mistakes, stumbles, freezes, and has brain farts. It is

I have found it helpful to solder fine wires, color-coded, to the various nodes and bring them out where they are easy to access.? Makes voltage readings easy and less chance of an "oops!" slip

In my case (rev2 hardware) R306 of 33 ohm was missing. I replaced it with first a leaded 33 ohm resistor and replaced it later with an 100 ohm resistor because I found the backlight giving too much

Building on this: I've noticed a possibly similar behavior with my QMX mid-band lately, though not through terminal but simply the built-in SWR "TUNE" function. I have a dummy load connected which in

There are some voices on the group saying that digital modes requiring multiple frequencies will work once the SSB is done. My assumption is that the QMX doesn't have a proper SSB modulator, it just

Thanks guys. So far so good. I now have been able to use putty and run the diagnostics. Screenshot attached. I did this using the jumper method. After removing the jumper and rebooting (by killing

Hi Grant, There is a file with a test process for the two power supply boards in the QMX: /g/QRPLabs/files/QMX%20PSU%20test%20process.txt I would first remove the two power supply