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I tried Barry's suggestion commenting out those lines in /home/pi/sbitx/web/index.html and rebuilding, but it made the web interface impossible to log in with the passcode.
I too have had the transmit timing problem with FT8. This is significant. Has anyone figured out a fix?
Jack, N6LN

I've tried poking around in some of the source files like modems.c, sbitx.c and sbitx_gtk.c and I can't find anything that might be a hint at why the FT8 on WSJT-X? in the DIGITAL mode only puts out about 3 watts. The current draw is 6-8 amps, which is a lot of power going nowhere but the heat sink. Does anyone with a deeper grasp of the software have any suggestions?
Thanks,
Jack, N6LN

After some time working with it, I can use the WSJT-X with the sBitx in DIGITAL mode at about 3 watts. I use dual monitors. I have made 2 contacts. The system is unstable, though. The DSI sbitx screen unpredictably freezes requiring a cmd line search for the sbitx process and termination with a kill command. In other cases the web link to the sbitx loses rig control, for example changing from 20 meters to 15 meters shows on the web interface but the real frequency won't change unless it's changed via the DSI touchcreen with a finger or a USB mouse. At other times the WSJT-X loses its rig control link unexpectedly (button goes from green to red, and frequency reads 000) and at other times the WSJT-X will not consistently start with rig control at all, although audio and decoding usually works. It seems as though a hard reboot of the entire rig is the best way to get WSJT-X to start properly with rig control, but sometimes that doesn't work either.
Has anyone got theirs to work in a stable fashion?
Thanks,
Jack, N6LN

Listening to my sBitx DE connected to a dummy load, I see (and hear, when tuned to it) a continuous tone approximately 600 Hz above the carrier, regardless of the carrier frequency and regardless of upper or lower sideband. It peaks about two to three divisions above the noise floor. It’s also present when connected to an antenna.

Do you think this in an actual spurious signal inside the radio (DE with HF signals’ mods), or an artifact of the DSP processing?

--
73,
Mark, N8ME

Evan-
Thank you for the reply.
I? am looking to see if any component BOMs listings were created by anyone? It would be difficult to compile a parts list from the schematics, although? i guess I could do that. ? I may take parts of the schematic and parts of the source code to create a variation of the sbitx.
So if anyone knows if actual BOM listings exist - grateful for the link to those.

Tnx agn,
Rich WE8T

I'm not sure this was the problem but somehow WSJT-X now has rig control. I was googling and found
which gives the steps:

good idea
--
Gyula HA3HZ

Ok, I made a mistake. It was not band switching where the problem was.

It was when changing modes.

Sleep deprivation is rough.

I'll see if I can duplicate the problem after a decent nights sleep.

Hi Rich,

To my knowledge, HFSignals has always considered the board information proprietary.? The design of the circuit (schematic) and all of the code is open source and readily available.? Some board layouts (pdf) for the developer edition (DE) exist.? I have not seen the same for the V2.



73
Evan
AC9TU

Hello - new to this gorup.
I see this is described as open source

The 40 watt High Performance SDR for the tinkers, DXers and field operators

?| Download? The sBitx is an open source, high performance Hybrid SDR for the 21st century radio amateurs.
------------------------------------------------------------

Does that include open source hardware - If yes, do you know the link to the pcb BOM's -

Nice SDR xcvr.
Thanks everyone
Rich WE8T

Scott, I still have no rig control although I get audio and the WSJT-X can decode. Interestingly I no longer get a working WSJT-X waterfall...it's black, even with decodes. I've rechecked the audio input and output selections. My WSJT-X works fine on my uBitx with an outboard dedicated Raspberry Pi, but that one is version 2.3.0. The sBitx version was 2.4.6. I even removed the 2.4.6 through preferences add/remove software and reinstalled the 2.3.0 version (that was the only choice) and it still doesn't connect with rig control--no frequency (stays red) and not tune function. So I uninstalled in and reinstalled WSJT-X and this time the only choice was 2.0.0 ! And still no rig control. Ive tried to install manually versions 2.6.1 and 2.7.0-rc2 but apparently there are dependency problems preventing installation. This is with my DE, but I have the same rig control problem with WSJT-X on my V2, running the same updated image.

I can transmit fine with the embedded FT8 mode, and at full power (the DIGITAL mode gave only 3 watts output, WHEN WSJT-x was working with rig control connection 2 days ago...and that problem has been reported by others) but I might as well just use FT8 with my uBitx which DOES work with WSJT-X at 3.5 watts, and which I used to work a station yesterday. But the FT8 with the sBitx? is hard to read with small letters 4 feet away, even with an external monitor, especially the blue call letters. There must be a way to get back rig control with WSJT-X on the sBitx. It was working before. I don't know what setting or other workaround I'm missing.
Jack, N6LN

Got it today . works fine . firmware is V0.2

?Hi Jack,

I have a dual monitor system and run WSJT-X working both FT8 and WSPR modes. ?My setup is the same as your Hamlib setup but if I read your message right, FLDIGI is not running on my radio. ?This is my start up sequence (all from the 7 inch display) after power up:
?
1. Launch mouse limit program to restrict touchpad to DSI screen only.
2. Launch sBitx and log in.
3. Close FLDIGI
4. Launch WSJT-X.

I too could never get reliable WSJT-X operation with FLDIGI running but after following the above steps, it works every time.

Good luck, Scott?

I think I have seen what you are talking about.? ?I use homemade soundcard systems rather than Signalink.? ?I prefer to run WINLINK etc from my computer and then treat the SBitx DE as just a SSB transceiver.? ?Ihave to run the audio? output of the homemade soundcard system TO THE MAX to get useful output, in fact I have it only my list to change a resistor in it to get even higher audio ouput to have more RF output.? ? This is prrobably just a coefficient somewhere in the coding.? ? Running high levels of audio voltage can be seen as an ADVANTAGE because it makes it less susceptible to common-mode interference, that is the bane of digital hams everywhere, but it does surprise one at first.

I have not delved into the code to see how the audio is handled for the Digital, I think I probably just use USB, actually??

Hope that helps,
Gordon KX4Z

Yes, I have seen this several times, but not frequently.? It does seem to happen more when using a remote web interface than when everything is on the RPi 4.? I do not have a solution to the problem.

73
Evan
AC9TU??

Hello Everybody,
Kit comes as in the picture above, all SMD soldered and ready to work.

Only need to add :

an ILI9341 SPI Display + a Box.

In the website you find the manual

and 3D files to print the box.

I would add some info:
Panadapter is just like an SDR receiver made with:
Quadrature digital mixer + SI5351 + Codec 16 bit/192 KHz and can go up to 150 MHz.
It is present an audio stereo output with I/Q signals, so you can connect your PC (sound card input) and use one of SDR programs available to have a receiver.
Because the mixer has a very high IMD , you can use the panadapter directly connected to the antenna and PC, without the radio.

Have fun, Luca IW2NDH

?

?

I have the same problem.

Has anyone had the sBitx DE, with mods 1 and 2 installed, lockup when switching bands?? ? This only seems to happen when I use the direct sBitx interface and not the web interface.

Sam,
Thanks for sharing this with us. ?One additional question. ?The website just indicates the availability of the kit but not what is required to assemble it. ?Are the major compost pre soldered or is it up to the kit builder to solder everything? ?Thanks

Dave, KA4DKU