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Phil, As has been suggested there are a ton of youtube videos and other web pages telling you how to program an AVR (the ATMega328P computer chip sold by Atmel/MicroChip used on Arduino boards) . This

I think those are probably stitching via's / ground plane stitches, I suspect you'll see that there's a ground plane fill on the other side right under them too, and these 'stitch' the two sides

The?BA00JC5WT is variable..? (full disclosure I know just enough to be dangerous) if I read this data sheet correctly a veriable resister(s) could be used at pin 4 and 5? I would love to learn more

Jason, depends where you live on this planet ? You did not reveal that. 2.1 x 5.5? or sometimes '5.5x2.1' is a de facto standard, zillions are around ;-) Either you grab 'any' cheap power supply with

Hans, Yes, I guess that most start like I did. Driven to the point that a piece of gear was simply scrap unless something was attempted I looked at various descriptions of how SMD work can be done

I forgot to mention that I have taken video for all of it, but it takes time to get it all edited. Soon! -- Ryan Flowers - W7RLF MiscDotGeek - QRP and More (Website) ( http://miscdotgeek.com/ ) *QDX*

Here's where I'm at with it as of midnight on 10/30. Having the inductors pre-wound sure was handy! The next things will be installing the LED, connectors, the electrolytic to stabilize the 5v voltage

Hi Fred I'm sure you are right and that I should get proper SMD tools. My point was... Lack of the ideal tool doesn't have to mean you can't do something. I have a long and questionable history of

Note also that QDX must have a working 25MHz clock (the TCXO module). If this is not the case then the microcontroller chip would use its own internal 8MHz oscillator. The microcontroller would

Hi Mike This is not a change with QCX-mini Rev 3. All QCX-mini PCB revisions have the same PTT output jack connections with the positive-going PTT signal on the "ring". This is the same as on the 50W

The QDX is a composite USB device that contains two USB devices: a USB serial virtual port for CAT control, and an audio interface for the digital mode data. All of those should appear in their

And now: Part 5: TCXO Installation! https://youtu.be/zbZMUdm81VA -- Ryan Flowers - W7RLF MiscDotGeek - QRP and More (Website) ( http://miscdotgeek.com/ ) *QDX* News, Tips, Build Series (YouTube) (

What band ? 73 Fred

Disregard my last message. I’m blind and didn’t see 40m in the title Fred

My QDX arrived today and I've started the build! Anyone have a recommendation on where to source a barrel DC power connector (2.1 x 5.5)? I made a bad assumption that the kit came with one and now I

Tony Do you see it in Device Manager? My QLG2 shows as COM 12 "USB Serial Device" it is the same processor as the QDX so should be the same. See screenshot. Windows should install the driver. Try all

If you go into device manager, what do you see for the driverless devices? The fact that it showed up at all means that USB was talking on the unit. Maybe not correctly but not dead. But I expect that

Lest anyone misunderstand, "no work" does not imply that there was no effort to construct this little jewel.? And it surely is cute, what with its little LED and all!? Got the package on the 29th

And as promised Part 4: PA Transistors: https://youtu.be/-iI7yPt6tPY This one took longer to edit than it did to do install the PA transistors ;) -- Ryan Flowers - W7RLF MiscDotGeek - QRP and More

Whoo hoo! Still ahead of you! :). OK teasing. I had another unexpected block of time tonight. It will be it for awhile though. Videos look good. At least you are having fun with it. :) It's not going