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Richard, Yes , Double sided PCBs have their own Cons . But we should , once decided to remove a component, especially multi legged, I prefer to butcher the part but NOT MY board. eg, resistance i

Hi Hans, The other half of the U3S to U3S amateur first two way QSO USA>Europe checking in here... :-) Congratulations on conquering the shipping situation. If you do find yourself with time to look

Hi Joe, sounds like a good idea to me. You just need to be careful not to accidently break one of the windings during the insertion and soldering of the other components. 73 de Paul DJ0CU

Howdy Gang. Should be receiving my QCX kits in a few days and have a question about T1. Is there any reason T1 should not be installed before any of the other components have been soldered in place?

Hello Hans, Great to see you have regained control of the huge popularity of the QCX and the nightmare sounding issue of the GPS chip! :) What a success the QCX has been, a very impressive product. If

I will check that too.

are you sure of T1. All coils in the same sense, connected correctly and perfectly welded ? That would be (was) my starting point. Martin

I've created a spreadsheet calculating the phase shift through IC6 and IC7. This shows that the correct 90 degree phase difference should happen when R17 and R24 are at their midpoints. So I think I

Hi all Just to re-iterate, in case you missed it in the July newsletter - 1) We are now up to date with shipments. 2) We now aim to ship all orders within 1 business day of ordering. 3) Tracking is

Richard, With these types of coils it does not actually make much difference. But as Martin says T1 and it's soldering is the first thing to look at. 73 Alan G4ZFQ

I can't tell, what I did wrong but facing the same problem I took T 1 out again took all the windings off and did it again. It looked much neater then and it worked fine. Fot the lack of output I took

In the photo of T1 in the QCX manual it shows the 4 windings as very distinctively separate. The 30 turn winding takes up half the toroid and then there are 3x3 turn windings, each being quite tight

I've been building my 30m QCX? over the last few days. Unfortunately I put a 33k resistor in one of the 47k positions. I discovered that removing components from double sided boards is quite tricky.

Tony, This is indeed what you see. I'd start at T1. Check the secondaries are wound in the same direction and correctly soldered. If no cure then check voltages. 73 Alan G4ZFQ

Thanks for the nice feedback Dave I'm glad to hear that you are having fun! My FDIM seminar presentation was recorded by Ham Radio Workbench podcast and is available on their website. My slides for

Hello, all. I have noticed this phenomenon for a while, and I was able to confirm it tonight.? I could use some insight, please. I have a QCX 40 that I just completed in June.? I have made numerous

I attended the 4 days in May seminar at the HI in Xenia, and was completely blown away by the presentation made by Hans Summers.? I left Xenia with three QCX kits, and built the 20M one so-far.? I

I just had a very difficult? 20 m QSO with a lot of QSP but it looks like my first QCX to QCX QSO to SM2BYW. I was waiting for that to happen. GN for now MARTIN DK3UW

If this newsletter is not displayed clearly, please read it online at http://www.qrp-labs.com/newsjul2018.html 1. New Product: QCX aluminium enclosure kit <#m_-5353896938287774414_c1> 2. QRP Labs

Hi Hans :), I agree!!! I always tried to serve my customers. I did not think of myself as having any competitors, just let my customers drag me kicking and screaming to success. Or put another way, if