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The port settings are right, coz i can change frequency. When it disrupt the USB, so it woul dbreak the connection, or not? but i'll try. Btw: VOX works. The Audio is ugly, but it works.

Hello All, I have recently acquired a 40M Mini and have finished the conversion to 20 Meters .. maybe. Original refit output was about 2.9 watts. Then removed two turns on L3 ( now at 14 T, not 16).

Just a followup, my QMX is alive now and in the case and this fix worked like a charm!

Jeff has been replacing a LOT of PCM1804's – have Jeff and Hans talked about this (Jeff or Hans, can you weigh in?) Jeff probably sees more broken units than anyone other than Hans and team, so

I got the rig back from Jeff (W1NC) today. He replaced the PCM1804 and all is well. He cleaned it up, tweaked the 10 and 6 meter toroids and the rig is working fine. Thanks to Jeff for a great job. I

As long as you're sure it's in practice mode, there's no risk. However, it's always safest to have a dummy load attached. It's too easy to forget and transmit in normal mode later. -- 73, Dan? NM3A

I did read the referenced doc, Thanks!? For reference, I found the following voltages: 9 volt supply, Current Limited (to 250ma) Idle (Power button not pressed) Vin -? 9.00V V+ - 0.00 Vcc - 0.00 Vdd

Perhaps - But I've also often seen that sort of thing when attaching a grounded scope clip? to an already grounded (via PSU /Antenna etc transmitter) radio and creating a ground loop.? ? It is

You are seeing normal operation in practice mode. A slight rise in current (about 6 mA in my case) is there when the key is pressed. No output power is being generated. It is safe to do this with no

*These fine QCX and QMX radios sure do make excellent Bumblebees. The QCX-Mini and QMC-Mini are even better yet. Take yours out for an adventure on July 28th . . . . 2024 Flight of the Bumblebees* The

Not likely since 3 bands work.? I would suggest checking the switching diodes for correct voltages per band and filter components on the suspect bands. 73, Don N2VGU

This is a particular problem around high-impedance nodes in the circuit, where leakage currents from flux or other ionic contaminants can have an outsized effect.? Opamp and ADC inputs for example,

Hello Hilliebillie, for training sending, I recommend just to use a Keyer and your paddle. If you own a WinKeyer, you may use that in combination with FLWKEY http://www.w1hkj.com/ if you like to see

I was finally able to do another firmware update and got the same results. When I apply power to the QMX+ I can turn it on by pressing the power button. The display shows: "Initializing Audio System".

Just looking for opinions/thoughts on using my QMX-MB as a practice oscillator with no antenna or dummy load attached. Thinking along the lines of sitting in my recliner and practicing sending. When I

I have been sorting out an original Low Band QMX purchased and built in 2023. It had a problem on RX in that a continuous tone was heard after a hellishly loud static noise which lasted for up to 2

I would check your com port settings. I’ve had the same issue before and I think it was caused by having the wrong settings for input and output. 73, Mike, KL7MJ

Bruce, Nice work around! I have used this a number of times on my various QCX-minis and QMXs. Not necessarily because I broke it off, but sometimes just because it was easier than trying to hold the

Does it exhibit this behavior when transmitting into a dummy load?? Perhaps RF is getting into the USB system and disrupting its function. 73, Don N2VGU

Ooops, replied to wrong message. Carry on...