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Steve, all of those points should be square waves.? As a check, look at the input of IC502, it is a square wave from the clock gen chip. And check that your oscilloscope and its settings can really

Stan - running at 12.0 volts. I was getting nowhere near that reading with my DMM. Jim

What input supply voltage were you using when you made those measurements? D502 should have a square pulsed signal from about 0V to almost the supply voltage, which should average to a small constant

Hmmm.... What I'm seeing doesn't make sense. All 4 BS170's have been removed. Key down, I'm seeing dirty sine wave at the point where the gate of Q503 and Q505 connect (Output of IC503C and IC503D)

Well, that would explain it! Thanks for the correction! Paul

Back from the trout trip. Sunburned, and tail between legs - didn’t catch a thing. But my two buddies were able to net three very nice 3-4 pound rainbows. Yeah, that’s BIG! Maybe next

Like with the last update months ago, I can't get the QMX to appear as a USB storage device. Please help me with the order of the steps: -Turn on -Establish a USB connection -Go to the Firmware Update

Please avoid using personal attacks, Chuck. Some facts: 1- I can assure you again that I am not using exotic wire. It is this:

If you have a QMX+ then there's lots of room to experiment. It's your radio, so have at it. -- 73, Dan - W2DLC

It should be a reasonably clean square wave from about 0V to about 5V, at your transmit frequency.? All corners of the square wave may be rounded a bit if your finals are installed.? Try measuring

Hi Paul, I printed the extented version ( https://www.printables.com/model/733283-mini-microphone-extended ) , so I can attach a foam to it. -- 73, de BD8BTE op: Lun Yang

I did a little bit of SSB POTA hunting with my QMX and a K6ARK mini-mic I had built for a (tr)sdx awhile back, made two solid contacts on 20m! For whatever reason, my voice usually requires some

QMX+ has no DIP switches. Check QMX documentation for microphone application. Mike Krieger [email protected]> wrote:

Sergey, the terminal interface is very easy to use.? I encourage you to try it.? If you need some help, send me a message and I'll walk you through getting it set up.? Most here use puTTY, and its

Another thing to check is that you are in vt100 emulation mode, and the screen size is 80x24 so it will scroll correctly. I think securecrt is way overkill for connecting to a local serial port, so

Or may the contacts should be activated for TX by default? 5V on the ring and ground on the tip during TX.

Hello Hans! Is it possible to add activation of PTT output contacts (5V on the ring during TX and so on) to QMX standard menu (not threw Terminal program)? I think it makes sense because almost all

Hmm...? I'm using securecrt. The window isn't "slightly out of shape". screen does do funky things sometimes to the console (when I use it for other applications). I'll research that and see if it

Main menu -> Configuration -> Band configuration and then go in and change band settings as needed. Section 8.5 starting on page 78 in the QMX manual describes in more detail, but only shows via the

And to clarify, this is a Rev 3 QMX.