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Hi Brian,? Thinking aloud, when you configure the u3s for TXCW do you then proceed through the rest of the menu until it says "push right button "? It sounds as if you are still in configuration

I'm very curious how well the i2c writes into the si5351 do. Looking forward to your notes on how clean you can get the signal. The fact that there has been very little commercial success suggests

I made a quick dead bug LPF and scaling amp and it has promise. The audio is starting to sound acceptable. If someone does decide to talk to you and you ask how’s it sound? I’m sure the comment

You might be Steve or you are the only one writing about it. I’m waiting for my QCX kit to arrive so that I can also try it out. In fact I order one just to try this. Skip Davis, NC9O

On Sat, Feb 2, 2019 at 09:42 AM, Steven Weber wrote: So, am I the only one to have tried this mod? No, I'm waiting for a QCX.? ? I've taken a raw 328P/5351/CODE and a voltage controlled attenuator

Hi Steve, I've done some playing with the technique and it has potential and issues. One being if the Envelope restoration is not quite in phase with the frequency? it creates sidebands so filtering

Many thanks !!

Hi Rob, I had the same problem with my OCX20.? The problem was the toroid T1 leads were not soldered good enough to burns off the insulation.? I had checked it with an ohmmeter and indicated good

Per parts list in the build instructions.?? Un-wind the thinnest wire.? that would be? 0.25mm 0.6mm wire 80cm of 0.6mm enamelled wire 0.4mm wire 15cm of 0.4mm enamelled wire 0.25mm wire 60cm of

Following the instructions of my friends for the solution of my problem I have to redo the winding of the transformer T201. In the instructions it is specified with "thin wire". Do you have any idea

More progress. I found where the PWM is set up in the Sketch and changed the settings to give me the full dynamic range. I also found out I was biasing the A/D port wrong. I didn’t realize he only

Hi Ted, Thanks for your suggestion. I haven't solved the problem yet but think I will remove the board from the case and check for dry joints. With just a dummy load connected I still get the same

Im pretty sure I've got my T1 miswound too . It's a tricky process and my radio doesn't yet work John K5MO -- III

PS: my call is kd8zm and my address in qrz is up to date.

Hi Andy, yes, as noted in post sent a few minutes after yours. Still can't figure out why it will not send CW. Brian

If you get stuck, send it to me, I'll wind it for you.

Some may remember the G2DAF linear which successfully used this technique. And in point to point HF circuits Lincompex (linked compressor and expander) was used starting in the mid 1960's where the

Hi again Rob Just curious, did you solve it? In my case it was a loose antenna connection. My antenna lead terminates in a PL259 and I use a converter to connect it to my QCX40. The PL259 had become

Have you tried actually creating a line of 20 characters? If you are migrating from a 2x16 setup you will only have programmed 16chrs for each line and that what?you are seeing. 73 Ken g4apb

Hi Hans, Thanks for the info, but this now leads to to other things that are puzzling me. Assuming what I have is correct, why can I not send CW?? 3.10 states that all I need do is connect a straight