Re: sBitx mitigation of hearing deficits / Science Fair Fertile Ground For High School Mathematicians
Dave K8WPE,
Hope the suggestion helps. My friend uses SSB alot trying to rack up DXCC and such. He Says that it helps alot. He had some damage done to his ears due to perforations, infections and such. He has had some problems hearing the same tones you have had problems with. certain audio ranges just drop out. Something about his inner ear ,coclea or whatever that is. Anyway he can hear like a deer now.He can hear stuff in the noise? that i cant even pick out.
73 David ac9xh
On Friday, March 1, 2024 at 06:17:54 AM EST, David Wilcox K8WPE via groups.io <djwilcox01@...> wrote:
David,
Thank you for the recommendation. I have seen a few oldsters with these and knew about them (I am a retired family doc) but somehow it never clicked. ? I had thought that I would lose some frequencies with bone conduction. This sounds like fun exploring something new.
Dave K8WPE
David J. Wilcox¡¯s iPad Traverse City, Michigan
On Feb 29, 2024, at 3:48?PM, david todd via groups.io <ac9xh@...> wrote:
?
Dave K8WPE,
There is a miracle hearing aids? called bone conduction hearing aids. My friend who is a ham had the same problem . He is totally deaf thru the outer ears but inner ear sections i guess work. Anyway he uses a device on the bone, no surgery, no meds nothing and hears like DEER in the woods.
havent Messed with them but my friend says he can hear night and day from it. He has some conditions which prevent him from going under the knife so the specialist recommended he use these. They work 100% he listens to CW SSB and has participated in pileups and such.
They just sit on the bone, no surgery and can be taken off anytime you want.
They are more expensive but his insurance covered most since it was a necessity. Dont know the particulars of the exact model. My friend doesnt talk about his alot.but i believe this is what he is using or something similar. If you dont want to pay the retail prices of the medical community, lots of items on ebay and amazon that does similar jobs but dont know which ones will work for you. ?The other one listed is off ebay.: i believe its $109 ,the one made in the usa with the creators photo.
The first one runs several thousands of dollars
Hope this info helps .
73 David ac9xh
On Thursday, February 29, 2024 at 12:29:51 PM EST, Jeff Duce <jefe_de_estado@...> wrote:
Gordon, this is amazing!? Please continue to be a rock-star teacher!!!? I owe everything to one physics teacher in highschool who saw potential in me, who had a ton of enthusiasm for teaching, and gave me an opportunity to work on a project.? That project lead to a scholarship for college, which lead me directly to my modestly successful career.? All because a teacher cared.? These kids may not have the same outcome I did, but this will set them up for future success and I'm sure they will always be grateful for your support.? I've been following your posts for a while and while I don't have any major hearing issues, I think this could greatly improve everyone's experience with the radio.? Can't wait to give your code a try!? Let your students know that we are all proud of their hard work!
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Re: A solution to the noisy hot 5V buck regulator
Found a lower cost option if you are going to solder the leads:
73
Evan
AC9TU
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Re: A solution to the noisy hot 5V buck regulator
Scotty,
I suggest using a Dupont header with the wires soldered to it and then plugging it into the mainboard socket.? The alternative is, as Joel has done (based on his picture), using crimp-on pins to the ends of the wires of the Drok.
Here is a kit from Amazon:?
You can use the solder on pin headers cut to size, or if you have a crimping tool, use the single or 4-pin plastic holders for the male pins.? ?Use the solder connectors to save the cost of a crimper.
73
Evan
AC9TU
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Re: Audio configuration help.
Thank you for responding Gyula.
Yes, the problem is that RU23 opened and has cut power to the LM380N.
I have bodged in a 10¦¸?resistor until my 0805 resistor assortment arrives.? I have many partial assortments remaining however 2.2¦¸?is not one I have on hand.
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Re: A solution to the noisy hot 5V buck regulator
Thanks for the update! Just curious,? how did you make the connections? I would guess tinning the wires and plugging in to the connector might work? if the diameter was ok. I feel that soldering to a spot on the board and holding it still with a bit of caulk might be best. Do you have any pictures to share??
Scotty
On Fri, Mar 1, 2024, 12:15 AM Joel Caulkins/N6ALT < caulktel@...> wrote: Hi Scotty,
Yes I still recommend the Drak regulator, it runs cool and has reduced noise and birdies by about 80%. Over all the radio is just more quiet than before.
Joel
N6ALT
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Re: Line input direct to WM8731 pin 19
Thanks for letting us know. Cool!
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On 2/29/24 00:18, ZL1SGS wrote: Just to round off my original question - feeding line level directly into pin 19 works fine. I now have the option to use the original mic input with electret mic, or line input and just use the mic socket for ptt. I didn't mess with also settings - just set my line level to about -10 to match domestic line level input of the a-d.
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Hi Dean, cool!
This is simple control I/O only sbitx implementation I did for reference.
- Rafael
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On 2/29/24 17:33, Dean Souleles wrote: On Thu, Feb 29, 2024 at 09:05 AM, Rafael Diniz wrote:
Some discussion about using the wm8731 with 12.288MHz clock here:
Thanks - is that your Github SBIT repo?? ? Looks like the thee of us asking circular questions!
I don't have any experience with how the audio system works in Linux so I won't be much help.? ?But if you figure it out please let me know.? In the meantime I have 12MHz cyrystals coming my way.
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Re: sBitx mitigation of hearing deficits / Science Fair Fertile Ground For High School Mathematicians
David,
Thank you for the recommendation. I have seen a few oldsters with these and knew about them (I am a retired family doc) but somehow it never clicked. ? I had thought that I would lose some frequencies with bone conduction. This sounds like fun exploring something new.
Dave K8WPE
David J. Wilcox¡¯s iPad Traverse City, Michigan
toggle quoted message
Show quoted text
On Feb 29, 2024, at 3:48?PM, david todd via groups.io <ac9xh@...> wrote:
?
Dave K8WPE,
There is a miracle hearing aids? called bone conduction hearing aids. My friend who is a ham had the same problem . He is totally deaf thru the outer ears but inner ear sections i guess work. Anyway he uses a device on the bone, no surgery, no meds nothing and hears like DEER in the woods.
havent Messed with them but my friend says he can hear night and day from it. He has some conditions which prevent him from going under the knife so the specialist recommended he use these. They work 100% he listens to CW SSB and has participated in pileups and such.
They just sit on the bone, no surgery and can be taken off anytime you want.
They are more expensive but his insurance covered most since it was a necessity. Dont know the particulars of the exact model. My friend doesnt talk about his alot.but i believe this is what he is using or something similar. If you dont want to pay the retail prices of the medical community, lots of items on ebay and amazon that does similar jobs but dont know which ones will work for you. ?The other one listed is off ebay.: i believe its $109 ,the one made in the usa with the creators photo.
The first one runs several thousands of dollars
Hope this info helps .
73 David ac9xh
On Thursday, February 29, 2024 at 12:29:51 PM EST, Jeff Duce <jefe_de_estado@...> wrote:
Gordon, this is amazing!? Please continue to be a rock-star teacher!!!? I owe everything to one physics teacher in highschool who saw potential in me, who had a ton of enthusiasm for teaching, and gave me an opportunity to work on a project.? That project lead to a scholarship for college, which lead me directly to my modestly successful career.? All because a teacher cared.? These kids may not have the same outcome I did, but this will set them up for future success and I'm sure they will always be grateful for your support.? I've been following your posts for a while and while I don't have any major hearing issues, I think this could greatly improve everyone's experience with the radio.? Can't wait to give your code a try!? Let your students know that we are all proud of their hard work!
<maxresdefault.jpg> <s-l960.jpg>
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I could not eliminate the cause of the error message.
When the number of stations in the band is low, the message does not appear. The RPi 4B has 4GB of memory and htop shows that almost all 4 cores work at 100% during decoding, but there is no additional memory usage beyond 318MB. There is only a significant change in the use of the cores. When there are many stations in the band, the decoding naturally takes longer (in my case it happened for 5 seconds), so I set the AUTOSEQ setting to 'Call based on end of decoding'.
The various forum discussions and websites with this topic always talk about the separate PC and separate radio, where they try to eliminate the presence of rfi.
In our case, this is difficult to check because everything is built into one.
If you live in a less densely populated area and use the radio, you will probably not experience this error message.
--
Gyula HA3HZ
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Re: Audio configuration help.
Loading the OS from USB does not change the sound.
The audio path to the speaker is the LM380N, which does not work below 10V. Since you wrote the 13.8V measurement, the cause must be looked for elsewhere.
If you use the device with the 7" display in ft8 mode, with the v3.02 software, you can set the own voice during the broadcast on the screen where ft8 works. In previous versions, you have to go to the cw screen to be able to set the own voice.
--
Gyula HA3HZ
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addendum:
it's not the software that changes the chances of failure, but the current-limiting power supply, a well-matched antenna and a well-functioning silent fan that is attached to the heatsink. The rest of my modifications were my own attempts.
I note that my antenna is sized for 7MHz (43.8m wire length) and I can use it on three bands without a tuner.
--
Gyula HA3HZ
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Don,
if you read on the linked page, you can see that this is a modification of the DE version. This change is not a change to v2.
You don't need to modify the v2, if your power supply is current limiting, it will work for a long time.
Use a well-matched antenna and you will be successful.
I uploaded and only store my QSOs made with sBitx here.
I'm using V2 with v3.02 software, PSU 12.5V to 6.00A current limit.
My antenna is an inclined vertical loop antenna fed from above (10m at its highest point).
Try it yourself!
--
Gyula HA3HZ
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Re: A solution to the noisy hot 5V buck regulator
Hi Scotty,
Yes I still recommend the Drak regulator, it runs cool and has reduced noise and birdies by about 80%. Over all the radio is just more quiet than before.
Joel
N6ALT
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Re: A solution to the noisy hot 5V buck regulator
Question; Is that new power supply still solving all your noise, birdies, etc on all the sbitx models you have? Do you still recommend the one referenced earlier?
Scotty
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Re: A solution to the noisy hot 5V buck regulator
Question; Is that new power supply still solving all your noise, birdies, etc on all the sbitx models you have? Do you still recommend the one referenced earlier?
Scotty
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I understand some folks are having issues with the upgrade check function on version 1.x of the Toolbox. The update check on version 1.x will NOT work by upgrading to version 2.x due to file and code reorganization. Here are the steps to remove 1.x and reinstall 2.x
For toolbox version 1.x
Open the?terminal?application on your sBitx
Type:??cd $HOME
Type:??sudo rm -rf /home/pi/sBITX-toolbox
Type:??sudo rm /usr/share/applications/sBITX_launcher.desktop
Type:??sudo rm /home/pi/Desktop/sBITX_launcher.desktop
?
To reinstall version 2.x?
Type:? git clone?https://github.com/drexjj/sBITX-toolbox.git
Type:? cd sBITX-toolboxType:? chmod +x *.shType:? ./installer.sh
-JJ
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Hi Doug, please let me know when you ship. Thank you.
mike
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Thanks for the interest Mike.? I don't have a paypal account.? You
have my email address and there are a few apps that offer free
services.? Quicken states Venmo is best after?
paypal and Google Pay might work as I have a Google acct.? ?If out
of USA Remitly is supposed to be best.? I am sure $ 20 will cover
shipping,if within the USA.? ?When you choose the service, send
$150 and I will take care of the rest!? If out of USA, let me know
where to ship, so I may calculate shipping.?
Thanks
Doug
KD0DAM
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Re: sBITX V3 Toolbox and Web GUI
#sBitx
For toolbox version 1.x
Open the terminal application on your sBitx
Type: ?cd $HOME
Type: ?sudo rm -rf /home/pi/sBITX-toolbox
Type: ?sudo rm /usr/share/applications/sBITX_launcher.desktop
Type: ?sudo rm /home/pi/Desktop/sBITX_launcher.desktop
?
To reinstall version 2.x? Type: git clone
Type: cd sBITX-toolboxType: chmod +x *.shType: ./installer.sh
-JJ
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Re: Antuino V2.1 mods page missing
#antuino
Joel,
I? would not go back to the older version.? There were some bugs and features that Ashhar Farhan fixed and added.? I ignore the flashing numbers.? They go away when you switch to the run mode screen.
Be aware of the shortcomings of the Antuino.? The most significant is the "gaps" in the measurements when the scan is set for a wide frequency range.? I do not remember all the details, but testing for 20-meter harmonics has to be done in steps as the span to the third has gaps.? I tried to correct that by sweeping through the gaps, but the scan time became excessive, and the noise level on the floor got too high.
The competing products are using FFT to do a better job of scanning.? They are also less expensive now or much more capable (TinySA and TinysA Ultra).? The demo video shows that it is an excellent toy to play with and is suitable for antenna tuning in the field or testing low-power circuits.? It is also an excellent tool to learn the Arduino IDE by trying to fix some of the shortcomings.
Have fun playing with it.
73
Evan
AC9TU
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Hi All.
I haven't touched my v2 unit for a while, and I'm getting ready to update to the latest software version.
I have not done the PA mod as described here...
Does the update change the odds of PA failure? I think I read that a previous update reduced the chances, but of course now I can't find that thread...
Thanks. Don
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Scotty R
HA3HZ
Joel Caulkins/N6ALT