As Hans has already stated, when he designed the original, he had NO problems when he came to testing same. Perhaps we should ask all those who have successfully built these kits to let this forum

That's correct Dan. If you beat me to it, post some pictures. Mike WM4B Today, not in the news... an estimated 35 million Pitbulls did nothing but love their families.

Mike, That's the 78M05 in TO-252, right? I have some of those. I wasn't planning on swapping out, but maybe I'll give it a try. The Zener diode orientation is different on the new board to make a

Hi Richard, this is the effect of loosing the 1PPS calibration timing pulse from the gps module. 73 ken g4apb

I was thrilled to get mine before christmas

ALC jack, tuner control, amplifier keying... ad nauseum. Mike WM4B

My point was just to give one example of an audio connector carrying DC. There are other examples, and it is not uncommon to use stereo connectors for things other than audio. The key jack is another

LOL Steve... you were probably right the first time! I've already removed the 1117 and the board is sitting on the bench waiting for Mouser to show up tomorrow. I planned on trying to document the

Hans, While changing the regulator is likely the best solution in this case, I hadn't mentioned that because it seemed to me that it would be more expensive than changing connector. I hope it works

4.2w with an attenuator on the BNC to bring it down to about 1w to the antenna.

Hello Laszlo Engineering is also about compromises to meet certain targets. In the case of QCX, the targets are high performance and low cost. For QCX-minj, small size also. It was an acceptable

Mike WM4B: I like your idea of shifting the 78m05 one pin to the left to match the ground and output pads of the AMS1117, while tying the input pin to the output of the D3 diode. Once you get this

Fred, I agree, to a point. As I've stated some time ago, I would have been scared to death to do 1000 boards on first run, with new design. I think Hans just got overly anxious to please everyone by

Check if the 1PPS 2ignal gets through the MCU at pin 28. Maybe it is just a wiring issue between the GPS module and the main board assembly. A oscilloscope or even a simple analog voltmeter can be

Checking the 3rd line on the opa2277’s on my uSDX, the ones that I can still see, none of them match any of the others. So 8 out of 8 the code on the 3rd line is unique

Gary, To hear it on a receiver you would most likely need a short wire antenna put close to the crystal. This is putting the good mini display in the defective mini? If so then check all

LOL!

Mike, I was thinking about having a 7805 and a limiting resistor. (I'm a 'belt and suspenders' kind of guy!) -- 73, Dan NM3A

If you have a scope or some other way to trace audio signals work your way backward from the output until you find the signal. You didn’t say but if you were able to do the bandpass filter

Yes, I bet it was very brilliant at the moment they were plugged in. Mike WM4B