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Quick update: Turning the CW decoder off restores the updates to the battery voltage display, but enabling it again returns to the previous frozen state.

There seems to be some interaction between the battery voltage display (set to Voltage), the CW decoder, and the Pwr/SWR display. When all three are enabled, the battery voltage stops updating after a while.?
I initially thought this was triggered by changing the update interval of the Pwr/SWR display, as that's when I noticed it, but it happens without changing that setting at all. Once the voltage display has frozen, it stays that way even after power cycling.?

Only a factory reset clears the issue.

Not exactly critical, but it would be useful to be able to see the battery voltage again....

Cheers,
Ronan
MM0IVR?

Hi,?

Small issue with my QDX. Nothing critical, but it seems to power up only when it's connected via USB to a computer. Formware is 1.10. Could there be a settign in the firmware that I missed that causes this behavior??

Thanks and 73 de Volker EA7KLK

Hi Yannig,

the coax was 3m long, made of RG174 cable. So, may be this is the culprit. I had another 4m long hyper flex cable, but I did not tried it unfortunately. Yes, I can try to add a counterpoise, and see if this disappears. Hope it will, because QMX was again a joy to operate.

Thanks.

Any other suggestion, folks?

Joan - EA3IKB

I use a medium sized tip on a Hakko iron with lots of flux. ?In about 2 seconds all solder is liquified and makes for an easy removal. ?I use 750F as my temp.

Jeff
W1NC

I finally got TA on a digital mode today with 4 watts on 20m, 3el yagi and my 20-10 QMX.

TA3NE is located in IZMIR, the famous trailhead for Hans' FedEx packages! Pretty close to home Hans. As you can see my QMX was booming in with a -24dB report.


?
--
73, Rick
VE7TK

Website:

Testing with FT8CN and AndFlmsg was successful.
Further testing with FLDigi and FLRig with QMX in VOX mode, The brief transmit burst then unkey continues, If i disable PTT in FLRig then the VOX PTT is successful and CAT frequency, Mode and RF gain is functional.

Conclusion: There appears to be a conflict between the VOX PTT and CAT PTT, even when VOX it turned off.

Also noticed that the "Minimum Cycles" setting ( in Main Menu/ Configuration/ Digi Interface ) keeps jumping around. It was set at 1 now it shows 131074

73, Kevin
K3TL

I did some more testing this afternoon and discovered that aforementioned modes in FLDigi do work fine if using VOX.

My prior testing was utilizing FLRig for CAT control and PTT. So the issue seems to be that the CAT PTT command is being cancelled within the QMX when the audio signal transitions from on to off to back on - with VOX turned off.

For example with Contestia 4/250 mode, in VOX, the QMX transmits for a split second then stops then transmits the remainder of the message.

Testing on Linux Mint 20.3? FLMsg 4.2.03 and FLRig 2.0.05.07

When using CAT PTT the QMX transmits for a split second then stops and does not resume transmit for the remainder of the message.

Now to test with FT8CN and AndFlmsg on Android device

73,
Kevin
K3TL

Guess not.

Brad, AB4BA

Glenn,
You need two things.?

One- set the QCX for straight key mode and tip for straight key. See the operating manual.

Two- you need to use a STEREO plug, but you only connect the key to TIP and SLEEVE. Do not connect anything to the middle RING terminal. And don't use a mono plug.?
--
73, Dan? NM3A
There are moments when everything turns out right .... Don't let them alarm you; they pass.?

-Jules Renard

On Sun, Feb 11, 2024 at 10:23 PM, EA3IKB wrote:

Can this have to do with Common mode currents??? I have no idea, but could that be? Is it possible that these CMC happen more in 10m rather than 20m for example? Today I only worked 10m and 15 for a couple of qsos, but I don’t remember if this also happened in 15m.

?

Any suggestions, any help?

How long was your coax ?

In a EFHW, the coax becomes the counterpoise so depending on its length (especially if it is short) CMC can happen. You can try lengthening the coax or adding a counterpoise at the UNUN. I've also head of people using a choke balun just before the transceiver.

The CMC might well be band dependent as depending on your coax length relative to he wave length impedance will change.

73 de Yannig - F4IUJ

Hi Mike, no, not at all!! SWR was fine!

thanks!

joan

Fantastic work, Hans!?

The only glitch I can find is that the battery voltage stops updating after a while. It stays like that even after a power cycle. This is triggered by decreasing the Update Interval for the Pwr/SWR display. I set it to 60. A factory reset clears the issue.?
This is repeatable.

Apart from that, this is a seriously good update. Thanks for all your work!

Cheers,
Ronan
MM0IVR?

Kevin,

I just tested 016 with FT8CN.
It used to stop transmitting after the first transmission (I heard of similar issues with fldigi).
But now it transmits on every second 15 second interval like it is supposed to!

What behavior are you seeing?

73, Mike KK7ER

Hi there,

I can no longer reproduce the speed save issue.
Go figure.

73, Mike KK7ER