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Just a heads up, JJ and the dev team have released v4.0 of the 64bit firmware. It looks amazing. There some superb operational increases in both ft8 and cw. Some change in the gui and looks to be really solid.?
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https://github.com/drexjj/sbitx
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This link has some good examples on invoking a callback on a gpio event
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Is it not possible to use the wiringPi wiringPiISR function to trigger a callback from the key/paddle gpio pin state change?
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73
??? Bob? KD8CGH
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I use JJ's Screen Resizer from his sBITX Toolbox set to medium to give me a larger virtual screen for running WSJT-X.
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73
??? Bob? KD8CGH
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Wonder if anyone has replaced the sbitx screen with a higher resolution alternative and if so what was used?
may have to use the HDMI port perhaps but means the unit would still be totally self contained which is what is required for portable operations ideally
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Re: PSK on ubitx and sbitx
JS8 is I believe and confirmed with this video link () is an evolution of FT8 and is my next go to as I prefer to have a conversation rather than the robotic qso’s of FT8.
However I do like FT8 almost as a test program in order to to prove how far you can be heard with the least amount of power on different antennas particularly when operating /P as I do quite a lot. Its also a quiet mode when away in the motorhome and I want to play radio early in a morning while the xyl is still sleeping.
I have put the sbitx through its paces in a digital contest and it failed on me when I tried to use PSK/RTTY with FLDIGI so had to make do with only FT8 but managed a creditable
3rd place in the WAB digital contest earlier in year.
The confusing thing now with PSK is that there are many different flavours of it so difficult to pick out which flavour is being used, that may be why FT8/FT4 have taken off as they have. I do still hear RTTY on the bands so thats another possibility too. Need to find a Linux based alternative to FLDIGI I think for other digital modes and thats where I think JS8Call fits the bill as an alternative keyboard based communications mode to have real conversations digitally?
Regards
Paul
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On Sep 30, 2024, at 15:10, Gordon Gibby KX4Z via groups.io <docvacuumtubes@...> wrote:
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I don’t know what most of that means but it sounds like a good idea if we can improve the response time, which might improve the possibilities for CW back up to usable speed for contest, which should be all the way to 30 words per minute. ? The primary usage of the raspberry is to service the radio so I don’t see any problem with it Operating at super user !
On Sep 30, 2024, at 12:29, Ashhar Farhan via groups.io <farhanbox@...> wrote:
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The main challenge is to improve the response time of linux. It is Not a real time kernel.
The best way is to memory map the gpio for fast polling. That means running it at super user privilige.
The K16 EXT Keyer Kit which I have Is a very in-depth manual for a simple device. Also it brings back the concept of transmitter on / off timing as Steve has built in the functions of transmitter timing as part of the keyer and has separate outputs for the Transmitter PTT and the transmitter keying circuits. This is something that was very common with the older tube transmitters (my old Johnson Valiant, and HQ-170 Receiver) the good old days all 83 pounds of transmitter, just what you want for a POTA Hi Hi and do not forget just throw that in your back pack and go SOTA, S-U-R-E -!!!
On Mon, Sep 30, 2024 at 09:10 PM, F6DUK wrote:
To run the software 800 x 480 ok and would 1024 x 600.also work, better? could not find clear info, 73s F6duk
The DSI screen draws 800x480 pixels on the 7" LCD display. Of course, you can use any higher-resolution external HDMI monitor at the same time, so you can use external applications that require a higher resolution very well.
Imagine that you are using sBitx as a radio, because it works with SBC i.e. Single Computer Board control. And you can use Computer to run external applications that can run on Debian OS. I use a PC monitor with a resolution of 1920x1080 pixels at the same time as the DSI and the two fit well next to each other. I manage the radio functions on the DSI monitor, while the external applications on the HDMI monitor, which require a higher resolution screen, because the small one does not fit a lot of data. Feel free to use it according to your idea and you will have a lot of fun with it.
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Gyula HA3HZ
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To run the software 800 x 480 ok and would 1024 x 600.also work, better? could not find clear info, 73s F6duk
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I don’t know what most of that means but it sounds like a good idea if we can improve the response time, which might improve the possibilities for CW back up to usable speed for contest, which should be all the way to 30 words per minute. ? The primary usage of the raspberry is to service the radio so I don’t see any problem with it Operating at super user !
toggle quoted message
Show quoted text
On Sep 30, 2024, at 12:29, Ashhar Farhan via groups.io <farhanbox@...> wrote:
? The main challenge is to improve the response time of linux. It is Not a real time kernel.
The best way is to memory map the gpio for fast polling. That means running it at super user privilige.
The K16 EXT Keyer Kit which I have Is a very in-depth manual for a simple device. Also it brings back the concept of transmitter on / off timing as Steve has built in the functions of transmitter timing as part of the keyer and has separate outputs for the Transmitter PTT and the transmitter keying circuits. This is something that was very common with the older tube transmitters (my old Johnson Valiant, and HQ-170 Receiver) the good old days all 83 pounds of transmitter, just what you want for a POTA Hi Hi and do not forget just throw that in your back pack and go SOTA, S-U-R-E -!!!
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Re: PSK on ubitx and sbitx
I make regular use of js8 on uBitx V6, running js8call on an Asus eeepc 900 with light weight Linux (AntiX) O.S.
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CAT control is via USB. Transmit and receive audio is connected via homemade cables, between radio front panel jacks, and computer mic/phone jacks. It works very well.
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Fldigi also functions with the same setup.
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However, thus far, I haven't made a QSO with any of the digital modes available in Fldigi. The many modes are confusing to identify (when observed on the waterfall). If PSK31 is one of the more popular (as mentioned earlier in the thread), does it have any real advantage over js8. (FT8 with wsjtx also works well with this setup. However, I prefer a mode which can be used for a real conversation, rather than merely exchanging QTH and RST.)
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How would you compare js8 and PSK31 (or some other mode that works well for you)?
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Thanks for your thoughts!
Dave Wurm, KL7HJF
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Re: PSK on ubitx and sbitx
Shawn,
Im just running the patch cables from rig to computer. no signalink or nothing, but im not having problems from hum or anything else. Never tried Olivia. not familiar with it.I think they had a contest this past week or part of the weekend. loads of rtty and such.
I dont own the sbitx yet. still at the ubitx v 6 level right now.HI HI
73 David ac9xh
On Monday, September 30, 2024 at 01:26:10 PM CDT, Shawn Rutledge K7IHZ <social@...> wrote:
> On Sep 29, 2024, at 6:50?PM, david todd via groups.io <ac9xh@...> wrote: > > hello, >? > Anyone trying PSK? you can do keyboard to keyboard comms with the Author.I made contacts the other day with my ubitx v6 on PSK and i was on 20 meters.Didnt overheat the finals and purred like a kitten. qsos lasted about 20 minutes for each contact. exchanged antenna,inof rigs,ages, weather, and exchanged conversations about some new antenna builds involving the TAK-TENNA.Pretty cool. All the way to India?? I’m in Norway now, and I saw on pskreporter.info that my signals were heard in India once, but so far I’m not making contacts that far away.? Just around Europe mostly.? I usually get by with a 20m EFHW wire on the balcony, but have gone hiking with the sbitx a couple of times with a portable vertical; the range and noise level are way better that way, no comparison.? Maybe next year will get around to a dipole to hang on the trees, or some other way to get some gain.? 11.1v lipo batteries were recommended… well I have an old laptop that no longer works (Acer… not recommended), but is still capable of charging its batteries; so I got the 7-pin laptop battery contacts on AliExpress, 3d-printed a battery holder, and they run the sbitx for portable use.? 4000 mAh each (in theory, but they are old); I can get a couple hours of FT8 out of each of them.? (Even longer than the laptop used to last, when it was working.)? I watch the voltage; the power goes out suddenly when the battery gets down a little over 8V, so it would be better to shut down a bit before that and switch batteries.? I got my first SOTA activation that way:? > .Virginia, Nebraska,California. Canada ......Not bad for a homebrewed vertical from a $35 dollar extendable paintpole 3 ft off the ground being fed with rg6u quad shield cable.Not bad for a few watts the ubitxx puts out on 20. >? > PSK is underused so lets get out and use PSK. I know some will say whats the use when we have ft8, but i get tired of zombie contacts. Yeah I agree; FT8 is new to me, but it will get boring after a while.? What’s the point if you can’t have a real conversation.? I can’t even fit “CQ LA/K7IHZ SOTA LA/AH-00x” in one message; so I was sending free text between calls and hoping that somebody sees it.? It will be a little easier when I get a Norwegian call sign and don’t need a prefix. I also tried RTTY for the first time over the weekend; lots of activity for the contest.? I made quite a fool of myself too.? First time I transmitted, it splattered like crazy… there is that attenuator at the bottom, and I found that I need to set it all the way down, -30db, to get the sbitx transmit level to look reasonable (judging from the size of the yellow bar).? (Or should I be adjusting the audio level some other way?)? Then it took a while to figure out how to modify fldigi’s macros to the short form they were using; etc. > Anyone for PSK? Plenty of freeware software out there.? one of my old windows xp laptops which i dug out 2 weeks ago to play with it, im using digipan. very easy to run.100% easy to install. Sure, I see fldigi can do that too.? But there are lots of others that seem to be little-used.? Olivia sounds good from what I read? I run fldigi on the pi in the sbitx.? (It's great that it came pre-installed.)? I have a 7” external touchscreen that I found on AE a few years ago, 1024x768, just big enough for some of those “desktop” programs to fit, so that I can see sbitx at the same time on the internal screen.? It doesn’t run down the battery much faster either, when I go portable.? And I started hacking on the main ui file on wsjt-x to get the main window to resize smaller when I want to shrink it down.? Reducing margins, minimum sizes and so on… it’s possible to have all the same stuff fit within 800x480, I think, but I didn’t try it on the sbitx yet.? Soon. I see we seem to be running the audio through pipewire-pulse on the pi.? So I think it should be possible to configure it to send audio streams across the network; then when I’m at home, I ought to be able to connect from fldigi, wsjt-x or whatever on my Linux machine to the sbitx, including the audio stream.? Is anybody doing that yet, or you’re just running analog mic/line connections when you want to use a separate PC?
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Re: PSK on ubitx and sbitx
On Sep 29, 2024, at 6:50?PM, david todd via groups.io <ac9xh@...> wrote:
hello,
Anyone trying PSK? you can do keyboard to keyboard comms with the Author.I made contacts the other day with my ubitx v6 on PSK and i was on 20 meters.Didnt overheat the finals and purred like a kitten. qsos lasted about 20 minutes for each contact. exchanged antenna,inof rigs,ages, weather, and exchanged conversations about some new antenna builds involving the TAK-TENNA.Pretty cool. All the way to India? I’m in Norway now, and I saw on pskreporter.info that my signals were heard in India once, but so far I’m not making contacts that far away. Just around Europe mostly. I usually get by with a 20m EFHW wire on the balcony, but have gone hiking with the sbitx a couple of times with a portable vertical; the range and noise level are way better that way, no comparison. Maybe next year will get around to a dipole to hang on the trees, or some other way to get some gain. 11.1v lipo batteries were recommended… well I have an old laptop that no longer works (Acer… not recommended), but is still capable of charging its batteries; so I got the 7-pin laptop battery contacts on AliExpress, 3d-printed a battery holder, and they run the sbitx for portable use. 4000 mAh each (in theory, but they are old); I can get a couple hours of FT8 out of each of them. (Even longer than the laptop used to last, when it was working.) I watch the voltage; the power goes out suddenly when the battery gets down a little over 8V, so it would be better to shut down a bit before that and switch batteries. I got my first SOTA activation that way: .Virginia, Nebraska,California. Canada ......Not bad for a homebrewed vertical from a $35 dollar extendable paintpole 3 ft off the ground being fed with rg6u quad shield cable.Not bad for a few watts the ubitxx puts out on 20.
PSK is underused so lets get out and use PSK. I know some will say whats the use when we have ft8, but i get tired of zombie contacts. Yeah I agree; FT8 is new to me, but it will get boring after a while. What’s the point if you can’t have a real conversation. I can’t even fit “CQ LA/K7IHZ SOTA LA/AH-00x” in one message; so I was sending free text between calls and hoping that somebody sees it. It will be a little easier when I get a Norwegian call sign and don’t need a prefix. I also tried RTTY for the first time over the weekend; lots of activity for the contest. I made quite a fool of myself too. First time I transmitted, it splattered like crazy… there is that attenuator at the bottom, and I found that I need to set it all the way down, -30db, to get the sbitx transmit level to look reasonable (judging from the size of the yellow bar). (Or should I be adjusting the audio level some other way?) Then it took a while to figure out how to modify fldigi’s macros to the short form they were using; etc. Anyone for PSK? Plenty of freeware software out there. one of my old windows xp laptops which i dug out 2 weeks ago to play with it, im using digipan. very easy to run.100% easy to install. Sure, I see fldigi can do that too. But there are lots of others that seem to be little-used. Olivia sounds good from what I read? I run fldigi on the pi in the sbitx. (It's great that it came pre-installed.) I have a 7” external touchscreen that I found on AE a few years ago, 1024x768, just big enough for some of those “desktop” programs to fit, so that I can see sbitx at the same time on the internal screen. It doesn’t run down the battery much faster either, when I go portable. And I started hacking on the main ui file on wsjt-x to get the main window to resize smaller when I want to shrink it down. Reducing margins, minimum sizes and so on… it’s possible to have all the same stuff fit within 800x480, I think, but I didn’t try it on the sbitx yet. Soon. I see we seem to be running the audio through pipewire-pulse on the pi. So I think it should be possible to configure it to send audio streams across the network; then when I’m at home, I ought to be able to connect from fldigi, wsjt-x or whatever on my Linux machine to the sbitx, including the audio stream. Is anybody doing that yet, or you’re just running analog mic/line connections when you want to use a separate PC?
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Re: PSK on ubitx and sbitx
Thanks David. During the sun minimum PSK was how I made contacts and during the pandemic is was how I got "out of the house." I have an sBitX but have not gotten fldigi to behave on it thus no contacts yet. So far I've not been able to diagnose it but I've been too busy to spend the hours it seems like it will take. Maybe with winter I'll find the time. It's a great low power mode.
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73, Bruce
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The main challenge is to improve the response time of linux. It is Not a real time kernel.
The best way is to memory map the gpio for fast polling. That means running it at super user privilige.
The K16 EXT Keyer Kit which I have Is a very in-depth manual for a simple device. Also it brings back the concept of transmitter on / off timing as Steve has built in the functions of transmitter timing as part of the keyer and has separate outputs for the Transmitter PTT and the transmitter keying circuits. This is something that was very common with the older tube transmitters (my old Johnson Valiant, and HQ-170 Receiver) the good old days all 83 pounds of transmitter, just what you want for a POTA Hi Hi and do not forget just throw that in your back pack and go SOTA, S-U-R-E -!!!
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Thanks.. The two-tone method is the proper way to calibrate the sBitx, but this quick-n-dirty method works for most people..? I highly recommend that folks save their original hardware settings file as shipped just in case something gets messed up.
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Re: Sbitx and ad831 mixer
Charudat,
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This is a quick drawing of the setup
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Also here is the transverter diagram
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What I did to the transverter was removed the cristal oscilator and injected the vfo clock 2. Also modified the low pass so it works exactly like the sbitx.?
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The advantage of the xverter board is that al the 2m circuit stay the same. Also includes a tuned rx preamp and the tx side can output up to 10w.
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Juan WP3DN
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Re: Sbitx and ad831 mixer
Hi Juan, Can you share a block diagram so I can better understand your point? Thanks, Charudatt VU2UPX?
Success!!!
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Added a 20db amp from the cristal output to the transverter and now have 7watts output on 2m!!!
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Now from the codec output the signal goes to the ad831 mixer. Then it goes to the 40mhz crystal filter. After it goes to the amplifier. The output of the amp pass to the low pass filter in the transverter and on to the mixer and final amplifier.
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Juan WP3DN
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Re: PSK on ubitx and sbitx
I use fldigi for psk on the sbitz v3. just need to make sure your in digital mode and change the pitch on the sbitx software to the signal coming in on psk on fldigi.
I find if you change the screen size to medium you can get both the sbitx and fldigi software up together. Then it is easier to see the psk signal on fldigi and change the pitch on the sbitx control software.
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Re: Sbitx and ad831 mixer
Success!!!
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Added a 20db amp from the cristal output to the transverter and now have 7watts output on 2m!!!
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Now from the codec output the signal goes to the ad831 mixer. Then it goes to the 40mhz crystal filter. After it goes to the amplifier. The output of the amp pass to the low pass filter in the transverter and on to the mixer and final amplifier.
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Juan WP3DN
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Bob Benedict, KD8CGH
HA3HZ
Bruce W4BRU
