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I wonder if one could dd the SD card /dev/ and pipe it to netcat to another machine. ?I know it’s a live file system, but presumably it would be in an OK state to burn on to a new SD card for a backup? ?Of course there’s always good old tar...

I would think you can do whatever phase shifting or filtering you can program, but it would be outside the sBitx since there is only one channel for audio hooked up to the headphone from the codec.?

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I believe the problem occurs without tuning acceleration activated, but let me know right away as I contributed the tuning acceleration code.

Great news on figuring it out and finding the hidden directory!??

73
Mark

What may not have been obvious is if it boots and runs the base OS
it has the capability to back itself up and even add or replace programs/modules.


Allison
------------------
Please use the forum, offline and private will go to bit bucket.

The base MPU module is Rpi running Raspbian linux.
I;ve used that for years as a HB laptop initially for fun
until I found it has enough power for serious work.

What that means is the computer in the box can with built in?
web browser (chromium) can easily surf the net (like HFsignals)
and even download files.? IT also has a software installer.

To use that plug in an eitherpipe or enable wifi and give it the
password for the wifi router.

Allison
------------------
Please use the forum, offline and private will go to bit bucket.

Farhan said that in the file sbitx_gtk.c , and do_encoder

is where its at!

Raj

V1.0
I have seen that and it appears the variable rate tuning software is twitchy.
If I tune up it behaves.? If I reverse suddenly it jumps.? If I pause then reverse it behaves.
Its a bug.

Allison
Please use the forum, offline and private will go to bit bucket.

Try disable tuning_acceleration.

Can be done from sbitx \cmd
at the sbitx-prompt write:

tuning_acceleration=OFF


another way is to edit /home/pi/sbitx/data/user_settings.ini
Restart of sBitx required.

de oz9ny, niels

I have to share this, and it may already be common knowledge in the group. Maybe it's even in the sBitx manual that I did not read yet.

Spent a lot of time attempting to make a backup of my original SD card supplied with the sBitx kit.

Used Belina Etcher, Raspberry Pi imager and Win32Diskimager and was not able to make a copy.
All three of these apps reported that my new SD card was "too small" for the sBitx image.

Finally got it to work with the SD Card Copier that is on the sBitx and maybe all Raspberry Pi's running Raspberry Pi OS.

Just look in Accessories and run SD Card Copier.?
Pick the internal SD card as the source (the name will be something like: SE32G (/dev/mmcblk0)) and the Copy to Device as the SD card you want to copy to.
You may have to put the new SD card in an adapter and put it in the USB slot before bootup for the system to see it.

So best make a backup before mucking around with the system.

Found the fix for my error in attempting to configure the Fldigi and Flrig apps was to:
First download the sBitx? "can't wait" image and locate the fldigi_def.xml.
The file was located in a hidden directory? ?.fldigi? ? full path /home/pi/.fldigi
Then replace it on the system that was presenting the error.

The correct settings may have been in the fldigi_def.xml-old file, but I did not think to check it in my sleep deprived stupor.

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CW decoding worked for me but strange enough when a stronger signal just outside the passband was present. When the spectrum was clean and only the CW signal could be seen on the spectrum I couldn’t get the decoder working. Guess that it was just a coincidence and decoding with fldigi is a lot more critical than with the decoder between the ears.?

Would it be possible to create IQ from the mono baseband? Like this does in fig. 2 from RF.

Can anyone confirm what I am experiencing ?

@100/100 Hz steps

When I tune up is smooth and as expected

but when I tune down it takes large steps

and getting back is a pain!


Raj

not sure what made me say eme.. oh well, have worked the birds.. but not since the 90's. :-)

Further testing of this early this morning.. I noticed that the "window" for? receiving a signal was centered n the screen, and thus a signal with your new code was about 1kHz higher than with the original code. Also decoding of cw seemed to stop.. I'm not familiar with the fldigi for cw, butt hat's what seemed to happen.. This is probably really old news now.. but FYI Brad

Finally got back to reading groups.io. got sidetracked..?
That would be great. Never worked eme, but a friend does and that makes sense. thanks for the response.?
Brad

Hello

Some ideas here


A list of interisting sites


cdt

Ok folks let's begin this,
This weekend I will be ordering 10 of the T30-6 toroids. That will give me enough to make I believe it is called the Low Pass Filter or LPF

I will also be ordering the 40 MHz crystals for the Crystal Filter which also uses the T30-6 toroids. (I will have to order more of these as it looks like they are throughout the build.)

I will be ordering the crystals and toroids from the GQRP club. I plan on following the advice of the Godfather of the BITX, Mr. Farhan VU2ESE himself, and of course the collective advice of the?BITX20 Group. (I encourage you guys to check out the BITX20 group, there are a lot of great people who happen to be active users, builders, and modifiers of the BITX series of transceivers. I believe that they have superhuman powers because they have even been able to fix my mistakes.) Unless otherwise recommended I plan to use the capacitors and resistors that I have on hand. I will use the Manhatten construction method with MePads and MeSquares from??( I try to purchase from QRP suppliers when I can) I would like to cover it here and on my blog as much as I can as this will be my first major homebrew project. The reason why I picked the sBITX is that the more I look at it the more it matches to be everything that I have been wishing for in a radio (ok the TX power is a little high for my wishing but I will take it)?
The only test equipment that I have is an Antuino, Digital Volt Meter, QRPoMeter (RF Power and VSWR Measurement) cheap LC Meter and a dummy load so that will be my shortfall from the start.?
Once again thank you for all of the help.?
--
'72

Has anyone configured VSCode to build sbitx? Can you share what you did?

73,
Mark