On Sat, 15 Mar 2025 17:57:07 -0400
"Dan KC2STA via groups.io" <dan.ziolkowski@...> wrote:

" it will
probably appear as /dev/ttyUSB0, although the 0 could be another"

That's not the signalink, that would be the serial port for CAT

My mistake, tired old brain mis-thinking again. Yes, the FT-950 CAT is
done via a USB->serial lead and the audio device is whatever the
Signalink appears as, a PCM290x Audio CODEC.

It's quite a lot of years since I had my FT-950 set up with the serial
and Signalink. Too used to newer radios with built-in USB hub and CAT
and audio via the same USB cable.

--

Brian G8SEZ

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PS:?? There's more.

Ive just found that the Squelch functionality with Olivia 8/250, is a bit dysfunctional too.

The squelch sometimes seems to be always open, regardless of the SQL button setting, or what the associated level indicator is showing relative to the threshold slider control..? This is intermittent as well.

Toggling the SQL button seems to fix it though.

I'm monitoring TC110GLB who's straddling 14072.5kHz today.

73.

Dave G0WBX.

On Sat, 15 Mar 2025 06:16:38 -0700
"Joseph Brault, KC9LFP via groups.io" <kc9lfp@...>
wrote:

Hello,

I'm in the process of setting my shack back up and want to use Linux.
Years ago I used a singalink USB and cat cable that runs to an
Edgeport USB converter to connect to my pc.? This worked fine in
Windows, but i'm not sure how to get everything talking in Linux.
I've tried searching for a "get started" guide but i'm not having any
luck / a bit out of my depth here.? Can anyone recommend a good
tutorial to set up an FT-950 in linux to use rig control and digital
modes?? Any helpful tips appreciated!

With the Signalink you basically have an external modem in there,
a TI PCM290x series chip. Linux will recognise it (probably shown as
TI or Texas Instruments but may also be called Burr-Brown) and it will
probably appear as /dev/ttyUSB0, although the 0 could be another
number. You should be able to see it appear and disappear as you plug
it in and out by using ls -al /dev/ttyUSB* in a console window.

Note that your Linux user ID will need to be a member of the dialout
group or you won't have access to these devices from a non-root account.

Then you select the radio type and modem path in your programs and it
should just work. Quite a while since I used an FT-950, I sold mine
several years ago.

--

Brian G8SEZ

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Hi again.

Well, this is very strange.

I renamed the entire .Fldig files folder, and started up 4.2.06.24 in it's /src folder from the command line.

After going through the basic configuration, things were working.? AFC control working as expected.

After some time, I exited, waited, and re-started it the same way.? BANG!? That AFC button is greyed out!

Mode was still PSK31, as it was the first time.

There is something funny about how it is saving/recovering settings from a previous session.

The daft thing is, if I again remove the .Fldigi settings folder, and start up 4.2.06 (release) and do the same procedure, THAT TOO instantly suffers the greyed out AFC button issue when restarting!

I've run MEMTEST86 overnight, no errors.? Spinrite 6.1 likewise passes the main hard drive as healthy, and as it is only Fldigi that is misbehaving, I don't know what else to try.

Earlier versions (and alphas) on the same OS (LMDE 6) worked OK.?? (As do WSJTx and JS8 Call.)? But do have issues some times with the Rv button, needing to be "toggled" when working with MFSK modes, so the decoder is the "right way up".

If it was a case that when the AFC button is disabled, and the AFC functionality too was turned off, that would be understandable.? But, if (when the AFC button is greyed out) and I select MFSK64 mode, with a waterfall full of PSK31 signals, the two red bars move about hunting for a signal, indicating (to me anyway) that the AFC is still working, despite it's control being disabled.

That is a huge problem when (for example) receiving the weekly ShortWave Radiogram, as when they send pictures, often the Fldigi "tuning indicator red bars" will wander off frequency during the picture transmission, and not find the digital mode again when the picture (successfully received) ends!

I've seen that behaviour for some time now, and was thinking it was "just me", but now I'm wondering if something in the permitted controls vs mode logic is messed up.

Might this be related to the need when running Olivia and other MFSK modes, to "toggle" the Rv button, to ensure the decoder is the "right way up" vs the Rig Sideband mode.?? That issue too, has been present for some time (I've reported it before) and I know I am not the only person to notice that, as it has caused issues a few times with the UK RAYNET HF nets, when working digital.?? (As I have also reported in the past.)

Sadly, my knowledge of C/C++ is not good enough to even figure out where the code that handles all this is located in the sources, let alone fathom out the logic.?? Else I would have a go!

73.

Dave (G0WBX) somewhat confused with this.

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Thanks Bob, I was thinking that this smacks of a config file conflict somewhere.

I'll look into that, as soon as the just announced "honey doo" tasks are completed.? (Her sister is coming to stay for a night!?? I'm thinking of sleeping in the 4x4 on the driveway HI!

73.

Dave G0WBX.

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Hi Dave...

Also keep in mind that AFC state can now also be saved per band/modem as well, in a similar way to output level and squelch. That would certainly cause some weirdess. Look at Config/Misc/Saveparams to see what the overall save state is. These are saved in the config directory within the file mode_state.prefs. I remember getting this confused for output levels once so I just altered the file directly. I think a good start point for testing is to ensure that any line with "afc" in it has the value of "1" (enabled). Given there are near 2800 afc lines I'd recommend using some grep filtering! Like;

grep afc mode_state.prefs | grep \:0

Displays all modem/band combos with afc disabled

To add to the confusion that file has AFC entries for modems that wont use it. It was easier to program that way I guess.

My original concern about AFC/RSID also involved TX lock. This being very useful if the radio TX/RX freqs are not exactly the same. One can "walk the band unintentionally.

Yes it can all get quite complex Some modems need to use RSID to get the centre close enough. eg 8PSK & OFDM. Multicarrier PSK modems don't ever use AFC I suspect because the code is written for a single carrier! Any IFK mode doesn't ever need it nor Olivia/Contestia. What is left that really needs AFC? Maybe just test these?

Bob

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Hi.

Well I said I'll report back.? But it'll be brief as I've been "booked for other things" (again.? I wish DM would give more advance notice, but when I suggest that, I get "The Look"!)

Anyway.

4.2.06.24 builds OK and runs.? But, the AFC control functionality is still weird, but in a somewhat different way to .21.? (Difficult to get my head around it, let alone describe it!)

Next stage is to archive all the settings and log files, and see if a "clean" build works correctly.

I rarely "Install" it these days, preferring to run it via a script, pointing to it's location in the projects version file tree.? It is also much easier to revert to an earlier release if issues prevail.? At least that's what I find.

~/app-srx/fldigi-4.2.06.41/src/fldigi??? For example.

The script containing that, itself invoked from the system menu tool.? If there is a better way, I'm all ears!? :-)

If a clean build does behave, then some investigation is needed perhaps, as I cant be the only one to update the executable with a new build, and expect things to at least "behave sanely".

One thing I've seen, that I sort of understand, is if RXID is active, AFC cannot be controlled, regardless of if it is active or not.?? I can understand the idea that if a station is using TXID, you shouldn’t need AFC to receive it, but there are some that use it, and still drift, so we need the free choice to use AFC or not please.

Also, if the AFC button/functionality is "blanked/greyed out", then the background AFC functionality, if it was in use, that should be turned off before the gui control is disabled.

73 All.

??? Dave G0WBX.?? Gathering tools to install a CCTV camera for a disabled friend of Mrs WBX.

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Sorry scroll down to the Security section all the way at the bottom. That’s where you will see the message referenced below.?

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Open your System settings app and go to Privacy & Security and scroll down to the Privacy section. You will likely see “Fldigi has been blocked to protect your Mac”. Click on Open Anyway and follow the prompts until it opens. You should have to do this only once for Fldigi but you may have to repeat the process for other unsigned apps that you download.

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A CNAME DNS record would probably do it. Problem is that Dave may want the site hostname for something else, or he'd be giving it up and no longer have DNS authority over it.

You may be able to get away with making a local host declaration on your PC though ie directs to 72.52.250.187 (however you OS does it)