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Very unlikely to ever be able to tune 80m with a 40m dipole. You could get more bands out of it if you convert the dipole to a doublet and feed it with say 300 or 450 ohm ladderline/twin lead, because that ZM-2 does balanced lines. You'll still have probs with 80m though....

All,
I definitely have the clicks. They are not as bad as pre 017 levels, but definitely there. They are much worse at high volume levels. So from a practical point of view, when you work a strong station, they are very low and not bothersome. When you turn up the volume, they become much more objectionable. Because of this, they tend to be much more noticeable with a dummy load, because you can turn the volume rather high before the back noise is very noticeable.?

Settings:
Audio: ON; thresh 9; slope 40; NF 10; Hang 30; smooth 50; recov 40; sample 4; S9 S9
Vol Step 2dB
Atten 0
Mute NO
ST Vol 70; Abs; 700Hz

I took iPhone recordings with DL Hi Vol, DL LoVol, & on 20 m with moderate signals. The HiVol was incredibly objectionable, while the other two were noticeable, but fairly easy to ignore. Unfortunately, I haven't been able to figure out how to send them yet in this forum. I will try to post them separately under 'QMX Click Audio'.

All in practice mode, but clicks are the same with practice on or off.?

?

--
73, Dan? NM3A
There are moments when everything turns out right .... Don't let them alarm you; they pass.?

-Jules Renard

I still have the thumps at the end of each dit/dah, running firmware rev 17 and with a clean bill of health from the terminal utility.?

Bad enough I can’t use the unit for CW.?

Settings are the same as Steve K1RF.?

Mark

On Tue, Mar 12, 2024 at 6:19?AM Randy <wrmoore47@...> wrote:

I’ll post my settings later today, but want to say I definitely have the clicks. In the ARRL DX contest I noticed that the clicks were noticeably worse when there were multiple signals in the rx psssband. More later.

73,

Randy, KS4L

On Mar 12, 2024, at 7:31?AM, Steven Dick, K1RF <sbdick@...> wrote:

?

Here's my observations on a QMX Rev 1 (80m-20m) and 1_00_017 firmware:

I keep AGC enabled. I no longer hear the old objectionable thumps I used to hear at the end of a dit or dah.? I do hear key clicks at the beginning and end of a dit or dah. They are not very objectionable but they are there.? The clicks appear louder when I'm on 40 meters with its normal background noise. The clicks are not as loud when I'm on a quiet band (I saw this on 20 meters.)? So the amplitude of the clicks seems to be somewhat a function of the background noise with AGC enabled.? In practice mode, I still hear the clicks, similar to how they sounded on 40 meters.? FWIW, here's my settings:

Audio:
atten = 0dB.

Mute at min volume: No

AGC: On
CW offset: 700
Sidetone freq: 700
Sidetone vol: 83
Sidetone rel/absolute: absolute

Keyer set to semi-break-in though this is not coded yet.

AGC settings:?
See attached

-Steve K1RF

------ Original Message ------

From "Hans Summers" <hans.summers@...>

To [email protected]

Date 3/12/2024 6:06:11 AM

Subject Re: [QRPLabs] QMX - Any progress on key clicks please?

Hello Daimon

There are a lot of people using it WITHOUT these issues with key-clicks. So there's a bit of a mystery here. Could someone happy with QMX performance on CW without key-clicks please post your settings here? Sidetone settings?(level, absolute/relative) and AGC settings. Then if Daimon you can post your settings too, we could compare and perhaps more easily find the culprit.?

There could also be a possibility of a hardware problem on your particular unit. Do you see any errors reported on the Diagnostics screen? Anything is red coloured?

73 Hans G0UPL

On Tue, Mar 12, 2024 at 12:27?PM Daimon Tilley <daimontilley@...> wrote:

Hi Hans,

My QMX is a year old in two months time, and for most of that time it has been unusable on CW for my style of operating (extra dits and dahs mainly the issue, as I am mostly a 20-25 wpm op.)

Thankfully FW 17 fixed that but now we have the key clicks. I had a QSO on it the other night, but after 20 minutes I had to switch rigs to an old vintage Shimizu as the clicks gave me a real headache and made it hard to concentrate on the sidetone. The rig has sadly had to be consigned back to the drawer it has spent most of its life in. (Note: I have played with AGC settings as mentioned on other threads - they helped a bit but it is too still intrusive to be usable.)

I do not underestimate the scale of the challenge and complexity of this rig, or of how busy you are with other work too, but is the light close to the end of the tunnel yet for CW please? I want to like the rig, but so far it has just not been usable in any meaningful way on CW. Many of the updates have been bug fixes or additional new features, rather than getting this core CW functionality right.

Please take this in the spirit it is intended - I am a fan, but am losing faith with this particular product. I hope we are close to a resolution.

Thanks,

Daimon. G4USI

<AGC settings (2).jpg>

Marek,

When QMX is unpowered, the PIN diodes are all in a high resistance state. No particular LPF is selected. What would the VNA measure?

When QMX is powered on, an LPF can be selected, but the VNA is at risk of damage from an inadvertent transmission.

Am I?missing something here?

JZ KJ4A?

On Tue, Mar 12, 2024, 11:50?AM Marek SP9TKW <sp9tkw@...> wrote:

@ Donald yes you are right, I used wrong description.

As for nanoVNA, you do not put power through it. S11 (source) goes into Input side of nanaVNA and S21 into output (ANT?) end. You should see classic curve for LPF filter. QMX is not connected to the power at that stage.

---------------------------------
73 de Marek SP9TKW

@ Donald yes you are right, I used wrong description.

As for nanoVNA, you do not put power through it. S11 (source) goes into Input side of nanaVNA and S21 into output (ANT?) end. You should see classic curve for LPF filter. QMX is not connected to the power at that stage.

---------------------------------
73 de Marek SP9TKW