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I was excited to load the beta SSB firmware on my working QMX+ Transceiver. It was originally?

running version 1-00-27 very well. ?The SSB firmware loaded apparently fine and booted up.

however it appears that something is wrong with the receiver side while the transmitter provides

normal CW output. ?I see some sort of noise pulsing at random in the audio output and see led

burst on the S meter. ?In my process of troubleshooting I tried to return the QMX+ to it’s original?

configuration by loading the 1-00-27 firmware which loaded but demonstrated the same results?

As the 1-01-03 firmware. ?Multiple reload attempts resulted in the same. I am at a loss as what to

do next. It seems that something went awry in the initial loading process. Any ideas?

Maybe a conflict with one of your settings?? (there shouldn't be such a thing, but there are still unknowns in the new version...)

Try a Factory Reset, which will restore original factory settings.

Note that updating firmware keeps existing settings intact, so doing a 'factory reset' may help either firmware version.

Stan KC7XE

I failed to mention that a did a factory reset in both versions and that no stations can be heard through

the receiver. The menus are completely traversable. My gut makes me think that the stored settings are?

now corrupt and confusing the the two firmware versions. I would think that a factory reset would

default the settings according to it’s respective version, in both parameters ordering and values.

Hmmm...? sorry to hear that.?

I have upgraded 3 of my QMX, and downgraded 2 of them, and never encountered a problem with the receive audio.

So this is certainly not normal.

And yes, Factory Reset should reset all of the settings, so that shouldn't be the issue, either.

Is your audio gone regardless of which mode?? (CW, Digi, SSB)?

And it makes random pulsing noise but no signal reception?

Is this QMX+ a rev1, rev2, or rev3?? This sounds almost like a PCM1804 problem, but that should be rare on a rev2 or rev3.? And shouldn't have anything to do with a firmware update.

I recommend you use the terminal to do an Audio filter sweep, RF filter sweep, and Test ADC I/Q (for one selected band, with dummy load attached).? The results of those sweeps should give us a clue.

Stan KC7XE

The strange thing is that this was a working QMX+ until I initiated the upgrade. Thinking back on

the procedure I did was:

?

Initiate upgrade from menu.

After QMX+ drive recognized by compute, go into file manager.

Select QMX drive.

Delete 1.00.27 image.

Copy 1.01.03 image into QMX drive.

Power down and re-power booting up 1-01-03.

?

Maybe I should not have deleted 1-00-27 first. Maybe that started the confusion.?
I’ll look at these things tomorrow?

?

thanks for your responses,

?

bob, k3tct

?

?

I've seen this before when users have deleted the previous firmware before copying over the new firmware. The procedure is to just copy or drag over the new firmware and let the radio replace the old firmware with it. Corruption seems to occur when you manually delete the old firmware first.?

--

73, Dan - W2DLC

It is never necessary to delete the current firmware from the QMX, but I don't know if it is a failure mechanism

Gary

W9TD

On Thu, Mar 27, 2025 at 02:29 PM, Daniel Conklin wrote:

to just copy or drag

copy yes but never drag. There were reports about problems after drag the FW into the QMX folder.

I am having the same problems

?

de VK6XT?

I have exactly the same problem after updating the software, the radio stopped receiving, I can hear noise.

In my case it seems that editing the tcxo down 2 Hz causes the audio dropout. Returning to 25Mhz instantly restored things !! Yes I am running the SSB beta 1-00-03 firmware.

de VK6XT?