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Mike, /g/QRPLabs/message/131060 ( /g/QRPLabs/message/131060?p=%2C%2C%2C20%2C0%2C0%2C0%3A%3ACreated%2C%2Cm0ktz%2C20%2C2%2C0%2C108865966 ) plus: in a big forum like

Thanks Don, This is new information to me. I did not look beyond the red and black pairs. I did think about color coded wires. I am using 14 gage red and black wire. Those other combinations would

How is the SSB progress going? Can't wait!

BTW here's a good thread on the subject: /g/QRPLabs/message/121907 I'm still searching for the perfect AGC settings lol.

How much current is flowing on the 12v line? If very little then maybe the regulator is bad. If a lot of current is flowing and the regulator is getting hot, then there is a short on the 5v line.

Thanks for this.? I saw that the on/off switch was not well soldered. Fixed that, Now the LCD lights up, but no text (tried turning R47 to no avail).? I read 12v between the input of the regulator

The only issue thats in the "shadows" and not explained is dead pcm1804 IC either on first poweup/DOA or during the use. My qmx+ was in this group. After replacing the IC no issues. Other issues are

Unfortunately there is not yet a firmware control to adjust the output power during operations. The hardware capability is present, so we can hope for a future firmware update that will allow us to

Larry, The output power is affected by the input voltage, within limits. If you have a QMX+ that's built for 12 volts, then the highest voltage you should power it with is 12 volts. The transmitted

I'm on the verge of buying a QMX+; the technology is just too good to pass up!? I had misgivings about the QMX because it didn't cover every band and also because of its small size. ?My camping and

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