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Luis, Also, know that a buck converter will also have a dropout voltage of perhaps 2 Volts, similar to the 7812A. Jerry

Luis, Here's a datasheet for the 7812A: https://www.mouser.com/datasheet/2/149/LM7812-461970.pdf On page 8, it says that Vdrop when supplying 1 Amp out is typically 2 Volts, could be somewhat more

After much reading I think most builders prefer for PCB work a 63/37 rosin core solder in a diameter of .032.? Kester type 44 seems to be a great solder available on Amazon at reasonable prices and

Hans, Thanks for being a good friend and encouragement to us in the field. Thanks for your amazing effort and sacrifice. Let's ease the throttle forward and get the train moving...... Jim S, my old

I had a 7812A regulator in the junk box, and added electrolitic capacitors on the input and output plus a 1n4007 diode in series to drop output voltage to 11.4VDC. Please your advise, what are the

Whoops, Yes 15th Saturday Ed AB8DF

Ed, I noticed two dates listed. The text says 15 March but the Details state 20 March.. I will be listening on 15 March just in case that is the date. I made my first POTA Hunter contact

Another good idea. 15 Mar 2025 Cmt 12:43 tarihinde Karol SP1PT via groups.io <sp1pt.radio= [email protected]> ?unu yazd?:

Good idea! Mike Krieger [email protected]> wrote:

As fate would have it, yesterday I received a book I ordered. It is a collection of articles written over the years by Andy Talbot, G4JNT, in the Design Notes section of the RSGB's RadCom magazine.

Great to hear that. It's very exciting to be a part of the QMX story. QMX was my first self-built transceiver. I am looking forward to a new adventure with QRP SSB on QMX. I would like to propose to

The SSB microphone input uses the iambic paddle input, the tip is PTT and the ring microphone with the sleeve ground for both.? The microphone line has phantom power and looks as if it will work with

> > Good idea. He deserves all the encouragement. > Here's the thing - why don't we do a "coffee flood" for Hans? Each of us, > who upgrades his qmx with ssb feature, buys coffee (or two, up to

It's been long so far, even 2 or 3 weeks don't make big change. Just do what makes you feel more comfortable with the release. :)

Actually, that might be a neat idea. We've been waiting for 9 long months for it while for Hans it's been 9 months of work for us, to have even more fun with this little rig. Here's the thing - why

Yessir! -- 73 Karl KI4ZUQ

Did you remember to install the jumper to the BNC?

I presume USB means Upper Side Band in this case, not Universal Serial Bus. 15 Mar 2025 Cmt 06:52 tarihinde Paul - AI7JR via groups.io <paul.hanchett= [email protected]> ?unu yazd?:

You should find that there's a QMX input and output device you can select. Can't advise you as to what the specific settings should be, though... :-( Paul -- AI7JR

Disconnect from power and check resistance to ground of 5V and 3.3V. Should be a couple of K or more for both of them. Should give you an idea of where to start, anyway. Good Luck! Paul -- AI7JR