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My 22g wire arrived today, T1 is rewound and installed. I tested the little riglet on all 4 - no, 5 - bands and had QSO's on all of them. What a great radio - lot's of fun! Here are some numbers you

It depends on the item with the largest thermal mass. For a grounded pad that's definitely the best way to go, but for a half mmm copper wire you'll be there all week and liberate the pad. In any

Not even slightly.? The filters are resonant, meaning that they both reduce harmonics and boost the fundamental. You could consider that the filters take the energy off the edges off the square wave

Syd. Can you bypass the filter with a wire link straight to the antenna socket then check the RF output? It should confirm if the problem is in the filter or not. Ian VK2GL

Hi, yes I saw it many times after switching band when testing the finished QDX. I used the "CAT command test" in terminal mode. I happened to be listening to the audio and watch it on a

All this is nice and does make a lot of sense. Unfortunately for me, after constructing the kit and then trying to adjust the turns on L1 - L3, I don't get a response to the power output when I

From Hans's UTube tutorial on aligning the LPF I might make mention to that part of the tutorial where he specifically tells the viewer to add/remove turns to the toroid according to whether one gets

This is a wonderful little radio.? Very sensitive and seemingly "bulletproof".? Very good build instructions.? Just a bit over 5 Watts output at 9.5 VDC. Well done Hans. 73, N4TVC, Randy

I got this when switching from FT8 to WSPR. The fix was simple enough - either change bands and then return to band of choice, or do the same with a mode change. -- John AE5X https://ae5x.blogspot.com

Based on Hans's record with other kits, notably the revisions of the QCX, I expect that all the current known issues with the QDX will be resolved on the Rev 2 board. The inductors will be replaced

Hi Ryan I will send a note about the list of changes for the Rev 2 QDX PCBs next week. 73 Hans G0UPL http://qrp-labs.com

Are there any details about any revisions to the second batch? -- Ryan Flowers - W7RLF MiscDotGeek - QRP and More (Website) ( http://miscdotgeek.com/ ) *QDX* News, Tips, Build Series (YouTube) (

Yup, you're absolutely right, Evan, and I should know better ! I was referring to *Dave* 's (k2lyv) comment: " *Also before soldering the power and USB connectors, insert the leads for the 200uF

Ditto - same here. Using WSJT-X. -- John AE5X https://ae5x.blogspot.com

I was also able to replicate the behavior on WSJT-X when switching bands. It's intermittent though. -- Ryan Flowers - W7RLF MiscDotGeek - QRP and More (Website) ( http://miscdotgeek.com/ ) *QDX* News,

Hi all, First off: I Love the QDX. I'm going to do a video review soon. But before I do, I want to know if anyone else experiences this issue: When switching bands, I get spurious input on the

Hi Julian, First off, Thank You for sharing your experiences they have been a great help. For clarity, which posting are you referring to in the above message?? It is always helpful to include the

What a fantastic little radio this is :-) Straight forward to build , only thing I had to do was to remove one turn from? L8 to get full power on 40m. 5.5W on all bands - also on 60m The receiver

Hi Karl, I am one of the "Mentors" for the NSRC club and have been doing the same research over the past year.? We recommend that first-time builders start with an "I Can Solder" kit that is simple

Yes! I was going to include that in my notes; thanks for bringing it up. -- Julian, N4JO.