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My reason for asking about the actual inductance for TI is to find out if the number of winds is the priority or is the actual inductance. Is it better add or subtract a winding in order to get a more

Does anyone have the inductances for the T1 transformer? The calculated inductances I have for 40meters , PRI, S1, S2 is 0.10-0.14uH. Is this correct?. The calculated inductance for S3 is 6.9-7.1uH.

Hi Floyd, Went to work on the QCX 40 this morning? and found no problems with T1 but discovered that L1 was the culprit and once I had re-soldered the joints all was well so many thanks for leading

Try instruction manual page 5 for a description of the wire and page 6 for a photo of the wire.

Life’s lttile tasks do have a way of getting in the way of the fun stuff… Steve KD1JV This afternoon I have to finish up an attic floor and access hatch, get hay out to the creatures, move more

Hi I've just put a new QCX-40 on-line and I have a?question... ?I'm trying to use the key stroke function to edit messages. ?I have Practice 'ON' so I'm not transmitting. ?Every key stroke is

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.