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One more thing - the Power Down works with a long press on the VOL knob but a long press will not power up the radio.? I can only power it up by removing and reinserting the power plug???

I just finished assembling a QMX for 60-15M.? I loaded firmware v 1.00_26.? I comes up on the 80M band and will not change to other bands.? In the Menu, I set System Configuration to "Band Version

Hi again Ron A P.S. for you... Attached I show a very similar result to yours (though it may not immediately look like it). What I have in my code is effectively a sort of virtual multi-channel

Chris Very well done. I’m jealous. Bill

Since there is room in the QMX case I decided to add a speaker.? I chose a 2" square speaker and grill from Amazon.? Unfortunately the grill and speaker mounting holes miss-align by a millimeter and

After completing my QMX+ build, I powered on (went from zero power consumption to low). Putting usb connector between pc and rig, it is not recognized. Tried both Windows an Linux Mint. Already

I remember things in a very complete way.? Remember I was there too.? I was not participating as a developer to further? your project/product.? What I did as a developer working with it until it

Hello Manuel But isn't it great that the topic is still so interesting, controversial even? How boring would life be if we all agreed and nobody tried anything new! Yes I thin

Hi, My QMX is back to life!!! Only the 3.3V supply board had to be changed. I didn't discover any other faults yet. The rest of the QMX seems to be really robust against peaks. Vy 73, Peter DL4PJ

Hi Ron > My plot is not a two tone output but instead is the output of the numerical Thanks, I understand now, it all makes sense. As you can see the Si5351 is not being exercised with a traditional

*PLONK*

Hi Hans, you know I love you too ! And while i?m interested in the technical aspects, my main focus ii on practicality of things. It almost feels, like I poked into a hornets Nest, as everyone is

Hi Hans, My plot is not a two tone output but instead is the output of the numerical calculations.?? The AMP is the value to be written to the D/A converter or the PWM and the freq is the value to

An that form of attack is not good. As a personal aside.? Its all the mostly software deserved, the hardware was given free by use of Hans work.? ?I justified everything? said then (4 years ago)

Hello Ron I'm not sure how that can reconcile with VK2IHL's result with the Polish example which uses drain amplitude modulation. He shows two tone peaks quite clearly and everything else below

RE some of the two tone plots from reading the links: I found with my experiments with a Teensy version of the usdx from the qcx board that a two tone test does not test the entire polar modulation

DL2MAN, I have a far better memory than you apparently.? ?However its all in the history of the group and still recoverable. The brass board was to build out extended ideas.? As it gave me the room

Hello Bojan VK2IHL actually said regarding IMD3: ? -40dBc/IMD3 Excellent ? -30dBc/IMD3 Good ? -20dBc/IMD3 Poor ? -10dBc/IMD3 Very poor But there is some room for confusion, between whether you

Hi Hans, this difference of 15 dB in favour to the drain modulation compared to the gate modulation raises some hopes. Reading the article from the link about the measured IMD3 I realised the result

Thank you for the explanation, Hans! Fingers crossed for Windows adventure ;)