sBitx: Maybe my expectations are too high #sBitx

#95183

After a short vacation I am back in the shack.

I changed the IRFZ24's with a new set, adjusted bias and was ready to test.

CW first with a dummy load. Output looked good on the scope. Output 25W on 20m with 2tone signal. Began flattopping with more power. Maybe my powersupply is too small.

Then I tried sending some letters from the keyboard. The very first dot or dash was never sent. So A became T, K became A, etc.

The K3NG mod seems to fix the keyboard cw-problem.

Then I connected a paddle. There is a timing problem too with a paddle. A short press on the can result in a very short dit or dash. Again the polling frequency is the problem. (There is something called interrupts)

Then I switched to FT8.

First issue: there is no way to turn the volume down. The T41-SDT book placed over the speaker solved this :-)

In the FT8-demo video Ashar showed how easy a qso can be. But the current software does not work that way. I tried several times and when someone answered my CQ the next steps for a QSO didn't happen.

Then for calling CQ you have to press the CQ-button (F5) for every period instead of calling CQ several times and waiting for an answer.

de oz9ny, niels

PS The only positive: The IRFZ24 survived

Re: DAYLIGHT RADIO - PLASTIC TOROID MASTER

#95182

Brass is a low loss magnetic core. Unlike other ferrites and iron cores, it reduces the inductance instead of increasing it.

- f

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On Wed, Aug 24, 2022, 3:38 PM David Wilcox K8WPE via <Djwilcox01=[email protected]> wrote:

Can someone tell me why a brass screw is used vs an iron or steel screw? I am sure this was explained years ago when these were first used but I don’t have that information.? I would think you would need iron to interact with the coil, but no science to back my thinking up.

Thanks in advance.

Dave K8WPE

David J. Wilcox’s iPad

> On Aug 23, 2022, at 8:16 AM, Craig Wadsworth <w9ctw@...> wrote:
>
> ?Getting closer.? Maybe need longer brass screw.? Thinner walls for toroid.? Outer toroid proportions look off, somehow.? Still, this is progress.?
>
>
>
>
>

Re: DAYLIGHT RADIO - PLASTIC TOROID MASTER

#95181

Can someone tell me why a brass screw is used vs an iron or steel screw? I am sure this was explained years ago when these were first used but I don’t have that information.  I would think you would need iron to interact with the coil, but no science to back my thinking up.

Thanks in advance.

Dave K8WPE

David J. Wilcox’s iPad

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On Aug 23, 2022, at 8:16 AM, Craig Wadsworth <w9ctw@...> wrote:

?Getting closer.  Maybe need longer brass screw.  Thinner walls for toroid.  Outer toroid proportions look off, somehow.  Still, this is progress.  

D58889B7-2544-4450-B633-231B0345358A.jpeg

Re: sBitx Touchpad / Mouse Issue #sBitx

#95180

I am very green with the desktop configuration as I have only used console terminal for all my work.?

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On Wed, Aug 24, 2022, 4:59 AM AI4AI <iamai4ai@...> wrote:

.profile and .bashrc? are where you'd put commands that you want to run upon >>user login<<.??

xinput is an executable file (program) that modifies the established X windowing environment.

rather than wait until after the X environment is set up (for all users), then modifying it via xinput (just for the user pi), you could simply specify the desired configuration in the X windowing initialization process.? (these rules are usually stored in the /usr/share/X11/xorg.conf.d/ directory).

On 8/23/22 19:12, JerryP wrote:

The files, .profile and .bashrc,? are "hidden" files because they are preceded?by a '.' and usually won't be displayed in a terminal unless you use the command "ls -la". A gui file manager don't show them either unless you turn on view hidden files. You can edit the files from a terminal command prompt using "nano .bashrc". Use ctrl-x to exit after your edits to save and exit nano. I don't remember if the file manager in PI-OS shows hidden files.

On Tue, Aug 23, 2022 at 5:45 PM Scott KE8KYP <scott_massey@...> wrote:

Hi Jerry,

I'll have to find the appropriate files and add the command.? I'm really kind of green when it comes to Linux.? It sort of "feels" like DOS but different.? I never had the need to really learn it but now I need to learn a bit more.? Ol' dogs and tricks, right?

Thanks, Scott

--

Jerry, AC9NM

手中的鸟在灌木丛中值两个

Re: K3NG sBitx Code Fork #sBitx

#95179

Great!!! Using your rotator controller code. Now on the sbitx!!!

Re: DAYLIGHT RADIO - PLASTIC TOROID MASTER

#95178

It does look long enough to work.  No, I have been trying for progressively thinner walls.  Thanks for the encouragement.

Re: Sbitx #62 is up and operating

#95177

Wow. The packs left yesterday?

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On Wed, Aug 24, 2022, 3:31 AM Art N2AJO <olson339@...> wrote:

Finally got a good set of PAs and a regulator. My Sbitx is up and working. Looking forward to getting the upgrade parts. Farhan Thanks
art N2AJO

Re: sBitx Touchpad / Mouse Issue #sBitx

#95176

开云体育

.profile and .bashrc? are where you'd put commands that you want to run upon >>user login<<.??

xinput is an executable file (program) that modifies the established X windowing environment.

rather than wait until after the X environment is set up (for all users), then modifying it via xinput (just for the user pi), you could simply specify the desired configuration in the X windowing initialization process.? (these rules are usually stored in the /usr/share/X11/xorg.conf.d/ directory).

On 8/23/22 19:12, JerryP wrote:

Show quoted text

The files, .profile and .bashrc,? are "hidden" files because they are preceded?by a '.' and usually won't be displayed in a terminal unless you use the command "ls -la". A gui file manager don't show them either unless you turn on view hidden files. You can edit the files from a terminal command prompt using "nano .bashrc". Use ctrl-x to exit after your edits to save and exit nano. I don't remember if the file manager in PI-OS shows hidden files.

On Tue, Aug 23, 2022 at 5:45 PM Scott KE8KYP <scott_massey@...> wrote:

Hi Jerry,

I'll have to find the appropriate files and add the command.? I'm really kind of green when it comes to Linux.? It sort of "feels" like DOS but different.? I never had the need to really learn it but now I need to learn a bit more.? Ol' dogs and tricks, right?

Thanks, Scott

--

Jerry, AC9NM

手中的鸟在灌木丛中值两个

Re: sBitx Touchpad / Mouse Issue #sBitx

#95175

The files, .profile and .bashrc,? are "hidden" files because they are preceded?by a '.' and usually won't be displayed in a terminal unless you use the command "ls -la". A gui file manager don't show them either unless you turn on view hidden files. You can edit the files from a terminal command prompt using "nano .bashrc". Use ctrl-x to exit after your edits to save and exit nano. I don't remember if the file manager in PI-OS shows hidden files.

Show quoted text

On Tue, Aug 23, 2022 at 5:45 PM Scott KE8KYP <scott_massey@...> wrote:

Hi Jerry,

I'll have to find the appropriate files and add the command.? I'm really kind of green when it comes to Linux.? It sort of "feels" like DOS but different.? I never had the need to really learn it but now I need to learn a bit more.? Ol' dogs and tricks, right?

Thanks, Scott

--

Jerry, AC9NM

手中的鸟在灌木丛中值两个

Re: sBitx Touchpad / Mouse Issue #sBitx

#95174

Hi Jerry,

I'll have to find the appropriate files and add the command.? I'm really kind of green when it comes to Linux.? It sort of "feels" like DOS but different.? I never had the need to really learn it but now I need to learn a bit more.? Ol' dogs and tricks, right?

Thanks, Scott

Sbitx #62 is up and operating

#95173

Finally got a good set of PAs and a regulator. My Sbitx is up and working. Looking forward to getting the upgrade parts. Farhan Thanks
art N2AJO

Re: sBitx Touchpad / Mouse Issue #sBitx

#95172

Scott,

If you're?using Linux, puting the command in .bashrc in your? home directory should work on?login. I'm using?Linux Mint, and it's called from my .profile file. The thing is, the command needs to be executed when the desktop is started.not on boot On Windows, which I haven't used for 20 years, you can put a batch (CMD) file in Autorun (Autostart?) to be executed on login.

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On Tue, Aug 23, 2022 at 1:48 PM Scott KE8KYP <scott_massey@...> wrote:

Hey Ashhar (or anyone else),

I am uncertain where it would be best to add this mouse mapping to the RPI/sBitx boot sequence.? Can you make a recommendation?

Thanks, Scott

--

Jerry, AC9NM

手中的鸟在灌木丛中值两个

Re: DAYLIGHT RADIO - PLASTIC TOROID MASTER

#95171

开云体育

Craig, why do you need a longer brass screw? The one in the picture looks long enough.

Have you wound any coils with the printed toroid forms yet? From the picture, looks like egg shell.:)

Barry

K3BO

?

Sent from for Windows

?

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From: Craig Wadsworth
Sent: Tuesday, August 23, 2022 8:16 AM
To: [email protected]
Subject: Re: [BITX20] DAYLIGHT RADIO - PLASTIC TOROID MASTER

?

Getting closer.? Maybe need longer brass screw.? Thinner walls for toroid.? Outer toroid proportions look off, somehow.? Still, this is progress.?

?

Re: sBitx transmit audio #sBitx

#95170

This is self oscillating. Is your antenna properly tuned up? You might want to add a balun.

I had this issue while using an external monitor. It vanished after adding a current balun : a couple of turns of the rf cable in a loop.

- f

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On Tue, Aug 23, 2022, 11:57 PM Mark Earnest via <mark=[email protected]> wrote:

This is what I'm hearing (recorded on a websdr near me)

Re: sBitx Touchpad / Mouse Issue #sBitx

#95169

Hey Ashhar (or anyone else),

I am uncertain where it would be best to add this mouse mapping to the RPI/sBitx boot sequence.? Can you make a recommendation?

Thanks, Scott

Re: sBitx transmit audio #sBitx

Mark Earnest

#95168

This is what I'm hearing (recorded on a websdr near me)

websdr_recording_2022-08-23T18_25_58Z_7286.0kHz.wav

Re: sBitx transmit audio #sBitx

#95167

Note you can use a kiwisdr near you to check the audio, very handy I have found!

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On Tue 23 Aug 2022 at 18:33, Mark Earnest via <mark=[email protected]> wrote:

This doesn't seem to affect the wind-like noise. Is it possible to purchase the mic you are shipping the complete kit with? I want to rule out the baofeng and qrpkits mics.?

Re: sBitx transmit audio #sBitx

Mark Earnest

#95166

This doesn't seem to affect the wind-like noise. Is it possible to purchase the mic you are shipping the complete kit with? I want to rule out the baofeng and qrpkits mics.?

K3NG sBitx Code Fork #sBitx

Anthony Good

#95165

开云体育

I have several code updates posted in a fork (and within pull request #8), for anyone who would like to test drive them and provide feedback:

Notes on the various updates and features are in a wiki here:

The notes are a bit spartan at this point.

73

Goody

K3NG

Re: sBitx Touchpad / Mouse Issue #sBitx

ecc

#95164

In most Linux systems, you can add commands like this to the file /etc/rc.local and they will be executed on boot.

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On Tue, Aug 23, 2022 at 9:21 AM Scott KE8KYP <scott_massey@...> wrote:

Hey ecc,

That was the solution!? It was pretty simple: tell the OS to only use the touchpad mouse on the DSI screen and every thing lines up.

In my case the terminal command is: xinput map-to-output "raspberry-ts" "DSI-1".? I'm pretty sure that once I restart the RPI that setting will be lost but this makes the touchpad useable in multiple monitor configurations.? I'll have to see how to make it part of the boot sequence.

Thanks for the help, Scott