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Will the QMX+ support the current 10W amp? Thx--Jim -- Jim, W7EZN? ? 73!

Jim, you could try to tweak the BPF winding of L401 in the same way. It seems there is room on the toroid. 73 Ludwig

Hello, I just received a U4B Tracker.? I do not see a port where a USB-mini cable can be connected. There is a metal box with a white plastic piece in the center (see photos). Is this a cover which

I have to admit something - I was not understanding how the results of the RF, LPF, and BP sweeps are to be interpreted. On the RF sweeps I was especially confused. I thought that the very low reading

Has anyone considered putting a small TalentCell battery in the available space inside the QMX+ enclosure? ?Would have to work out how to charge it without having to unscrew the top every time, but

The QCX+ (!) is 559 gram (19.7 ounces) and I dont think that the QMX+ is MUCH heavier as its same enclosure. So its about the weight of an Elecraft K1 (600 gramm) which is very ok for trips. 73! Peter

Thanks for the responses all. I did continue with the build so we shall see how it turns out.

Correction: 38 mv -- 73 Karl KI4ZUQ

One of my inductors was damaged during assembly. It works perfectly. -- Colin - K6JTH http://tangokeys.com

Here is a scope trace of this buck converter. I cannot hear anything in the QMX from this 5 mv 190 khz saw tooth output: -- 73 Karl KI4ZUQ

Hi, My parcel also come with damaged inductors. But my understanding of how it works convinced me to build kit. And no issue with power supply in my QMX HB.

We just picked ours up.There going like hotcakes! Lots of interest. Thanks Hans for your labor and energy and bringing some with you. James and Dawn

From your picture, it appears that only a chip is off from those two 331 inductors. If that is all, I can't imagine that it would have any impact on functionality. -- 73, Dan? NM3A

Hello, Steve I cannot say for QMX, but I tried Bourns 32 and 64 clicks per rotation with QCX and they worked well. But would not recommend to install more than 64 as it looks to fast for QCX/QMX.

The 330uF inductor on one of my SMPS boards arrived in a similar condition on Thursday. The coil is intact, so I assume that it will function as intended... 73 de Russ, va3rr

That last question requires a look at my second picture: The single round hole is for power in. The dual nine pin serial port is not connected to anything. I drilled the hole for the SMA coax

I wonder if it was the original two? Postmark date?

Got 'em today! Arrived about 1300 CDT as we met the mail van coming our way as we headed into town on another matter. They got here in good shape, no boot or tire prints! Thanks and message me here or

Right now, offer it for trade for the one you meant to order. That'll be the fastest. 73 Jim N6OTQ [email protected]> wrote:

I did send Hans an email with pictures of the box before I opened it. Once he is back from his travels and can respond we will figure out best path forward.