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Hi All, I'am still unable to get good RF sweep in my QMX, 9V version 55mA RX 3-4W output into dummy load, but receive is very quiet. I presume this is due to BPF. All continuity checks are OK. Here

Hans, Unless I am missing something the diode D101 has not failed even though I had a short between the two drains. I powered it up after I moved Q103 and it has been working just

Hans, thanks for the pointer on what to repair. Mitch, thanks for the offer, I ordered them on Amazon and they'll be here by 8am tomorrow? Appreciate everyone's help, continue this tomorrow after

Oddly this seems to have worked itself out. Backlight contrast was horrible the first day or two of use. I just turned backlight back on and it seems to be good now. Not sure what changed.

With the backlight on, I can barely read the screen of my QMX. That's with the trim pot turned full counter-clockwise Increasing that trim pot at all, and I can't see anything but the backlight. With

That's great Chris, thank you. Steve

As an update, as I look further into this it would appear the paddle also doesn't work. If I set practice mode and just key nothing happens. Doesn't appear to be a common element between the key and

James, I experienced the same. Here's a link to get a pack of them overnight on Amazon: https://www.amazon.com/dp/B089KD46P6?psc=1&ref=ppx_yo2ov_dt_b_product_details Works fine once installed. I'll

Hans, Thanks for all of the updates. Wonderful radio. Incredible engineering/design. I'm so happy! I'm not sure if this is the right place for reporting bugs or if what I'm experiencing is a

Thanks guys - I'll ignore that "loop" on page 33 - it sure is confusing! -- Jim / K7TXA Eagle, ID SKCC 10447 BUG 301

Go by the pic on page 32 it shows exactly how many turns to each hole. -mike/w1mt

The picture causing your confusion seems to show 31 turns. So ignore that picture, other than for a general idea.? Follow the text. At the end of the 28th turn, the wire needs to be connected to

Hi James Unfortunately you need to replace the 1N4148 diode nearest the 2x4 pin connector at the end of the 5V board. The transistor drain short puts the input voltage directly across the 1N4148

OK - I'm confused. Just started the build of my QMX yesterday. I got to page 33 (winding of L-401) and am stumped by the photo of step 3. It is showing a loop at the 28 tuen place, along with the

As several models are mentioned I’m not sure which radio you’re talking about. With my QCX+5W I installed a small 40mm dia 32ohm speaker in the case and connected it internally to the negative

Thanks all. That was it, Q105 was hanging over the Q104 pad by a pretty significant amount. With all the other incredibly detailed "check this first" steps in the instructions, this one seems like

I noticed the same issue with my QMX plugged into a small external powered speaker.

Same here. I have just finished the QMX and loaded 1.09. The volume control is sometimes very erratic. It increases when turning the encoder anticlockwise and by some huge steps. I initially thought I

Chuck, those RF sweeps look like what you will get if CW practice mode is on.? When I finished my QMX, I put it in CW practice mode before going to bed, to protect against the possibility of

Hi, when I was with no decode and good waterflow signals it was always the bad time synchronisation. Other reason for a weak response was a partly damaged RX BPF mux having two outputs bonded