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This is encouraging! I have a similar issue. My MPU was dead before I could ever get my QMX flashed. How do I request to purchase a new micro-controller with the QMX bootloader

Hi Danny, Did you follow these instructions?? Pretty sure I did this with the QDX, which is pretty much the same goal and strategy... https://www.sdr-radio.com/external-radio 73, Mark N8MH

They are not BS170's. They are mislabelled 2N7000's as many of us have discovered, and barely produce 300mw. Documented well in the group archives. Stick to suppliers like CPC / RS if you want real

Great clip here - https://www.youtube.com/watch?v=Q2luo6jg4ac Anyone got a better link (off list) ? -- - 73 de Andy -

OK I hope I can make this make sense. I am struggling to get the IQ output of my QMX+ be properly synchronised with any SDR app.? The screenshot attached is of SDRConsole and you can see that the

Thanks Zhenxing, now everything is clearer now. I will try it when I reach my station.

I have found that QMX+ works great with most N1MM key combinations & shortcuts. However it does not appear to work for the primary function key assignments: F1 (CQ), F2 (exchange), F3 (TU), F4

My radio was a Hallicrafters SX100 Mike Krieger [email protected]> wrote:

Make a nozzle for a hair dryer and then when the rig is cold try heating up various components until the audio acts up. 73, Cliff, AE5ZA

I recapped and replaced out of spec. Carbon composition resistors and it brought it back to like new. If it has paper tubular caps they should go also. Mike Krieger [email protected]> wrote:

Sounds like old lit is to me. That’s where I would start. Mike Krieger [email protected]> wrote:

Heck, I have a venerable old Yaesu FT-101 up in my office. It has a weird audio gain problem I don't know how to diagnose, much less fix. The mechanical stuff I manage to take care of, like replacing

Update: 7/22/2024 Hans provided a new MPU at very reasonable cost. While doing a through clean-up of the board in preparation to install it, I found a whisker of solder between two pads on the MPU

Thanks to Hans and other for clarifying this. I guess I will be ordering a kit instead. 73, Robert OE7OER ________________________________ Sent: Tuesday, July 23, 2024 12:05:30 AM To:

My method described here is, I will admit, a bit obsessive, but whenever I'm setting up for a new band or antenna configuration, I use a nanoVNA to scope out the impedance match and SWR, and manually

Please join us Thursday (and every Thursday) at 4PM Eastern for the Michigan QRP Club weekly QRP Chat where the main topics will be QRP and other ham interests. It's fun, it's easy, and it's free. You

Back in the '70s, at my first job at MSC, we made microwave test fixtures using 1 inch square white alumina ceramic boards with gold metallization.? We etched the boards in-house. One of the

Hans: It would be helpful to enable mode control to easily select a tune mode using the volume control, mode select: So it would be: CW Digi SSB (hopefully soon!) Tune

Hello Hans. No the QMX is too efficient! I built the 9V version and output power vs supply voltage is: (Measured at 80 meters with a dummy load and a good scope) 9V 4.50W 8V 3.53W 7V 2.56W 6V 1.96W 5V

Reading the post by Dj Merrill, I totally agree. To use an ATU on the QMX/QMX+, go into the settings on the radio, Hardware Tests, then Tune SWR. Select the band you want to use, then press TUNE