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Martin, first check the 5v output of the voltage regulator (IC11). Next, look at the cathode end of D3 near the front left side of the board. You should see your 12v input there (less the diode drop).

I'm just reviving this thread to see if others have had any further success with the 50w Amp. I went around the horn a couple times until I remembered reading something about this. I had issues with

Sounds like a great plan, let us know how it turns out. Be sure to measure your PD outputs if you try to use multiple voltages from the same power bank.? My power banks wont switch one port to 9V/12V

Hi, IMHO design and instructions for all QRP-Labs is exceptional and this is also often reason for many troubles and issues you see on the forum. I personally build 2 QMX and both times all was

I noticed the crackling noises when I was operating this weekend, using my new AGC settings.? They seemed to happen when the AGC was not engaged.? In other words, I heard crackling when the signal

Mike, I too had the same trepidation about buying the QMX+ kit because of the number of folks posting their issues. ?After looking at the posts, I realized that a great many were user caused issues

Also for 6 and 15m? 14 Oca 2025 Sal 17:03 tarihinde ta2rx bekir via groups.io <ta2rx.bekir= [email protected]> ?unu yazd?:

Mike, Without a proper survey how can anyone tell? On the whole do successful builders use the group much less? Thousands get sold, I'd expect most failures, for any reason, to be reported. Most

Don, I am curious as to your housing colors and orientation for your different voltages. Could you describe them or produce a picture? -- 73, Dan? NM3A

Just finished the build. Nothing at the LCD. No voltage at pin 3 or at any lead of R47.? Would appreciate some guiidance as to how to troubleshoot. Thanks

Larry, An old post to this forum (that I can't find now) recommended that in the PuTTY Band Configuration screen, you change the band's "Band Name" to 0 (zero). I've done this and it works.

Thank you again Stan. Ordered some 2N7000's and other bits and bobs.Got everything bread boarded and verified and am now waiting on an order of 1/4 size proto boards from AdaFruit. Will build out some

Hans Thank you for your answer. I will wait for the time that change is in a firmware update. I know you have more important items to keep you busy. Larry NA0F

I also built mine with the 250 Ohm resistor for the LCD brightness and wired a 25Ohm pot to the case so I could control the brightness to my likeing rather than hard wire the 3 or 4 options. But great

I've been following QRP Labs since before its inception and praise the quality of design, build and support for the kits, as well as the innovative inspiration that brought them to market. However,

What should be the ideal values? 73! de Bekir TA2RX

I thought about that too. Thanks for the suggestion! -- 73, Dan - W2DLC

You’d be better using high value resistors to bleed off the static, in my opinion.

Bruce, That's the way I had it? but I found it awkward to have to reach into the back of the case to program the clock. Another issue has come up? which is that any static discharge from me walking

I use both color-coding and housing orientation to avoid this; my 12V is ARES standard, other voltages have different housing colors and orientations, they will not physically plug together if