Re: Broke off screw mounts from screen
I think I see that a screw is broken off in the standoff. If it is a screw, it can be removed by drilling a hole in it and using a screw extractor but if you do not have the tooling for this, it is too dangerous to contemplate and may not work for you.
Best is to use a new standoff. It is a small hexagonal unit with threads in both ends OR a threaded section on one ene and screw threads on the other end.
O believe you may get the standoff at Hobby Lobby or at some electronic superstore. A good hardware store may also have them if they have extensive hardware stock. Problem is that none of them may have them with metric threads.
You could substitute with one with what they have with the proper length and get screws of the proper dimensions that will fit. However, the problem is that if the original standoff screws into the display itself, it may also be metric but maybe it is mounted with a screw that can also be sub'd with one from a hardware store.
You can also go to a mechanic who can extract the screw. Good ones have to do this all the time but usually they have to remove much larger screws. But a good one can do it.
Hope this helps.
Bob ¡ª KK5R
On Friday, January 1, 2021, 9:36:37 PM EST, Gregg <greggahorton@...> wrote:
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Re: Broke off screw mounts from screen
On Fri, Jan 1, 2021 at 06:36 PM, Gregg wrote:
Here is what I mean
Gregg, The parts your a looking for are called "standoffs". Measure the standoff height and order new ones. The screws are M3.? An example of a kit is? eBay item number:353263945615
?
I don't know if this kit has the correct height assortment. Rgds, Gary
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Re: uBitx V6 firmware 1.2 upgrade
Jon,
That depends on which Nextion you have purchased.? Also on what features you may want to add.? A good source is ubitx.net in the download section for larger screen sizes.? For the 2.8" Nextion that can be forced into the stock case you can try this location:
In the above are also the wiring instructions for the screen.
One last point, some of the screen programs were built using the older LTS Nextion editor, and will not fit into the 2.8" display using the newest Nextion editor.? You need to worry about this only if you want to make changes.? Just be sure to get the correct size and model (Basic or Enhanced) tft file that matches your display.? Be sure to load the screen files before you install the Nextion into the uBITX, as the default orientation puts the microSD card slot on the bottom (this can be changed if you take the source and modify it with the editor).? All you need is a 5volt supply to power the Nextion screen.? Some of the screens come with a microUSB power tap that can be used for the setup.
Have fun and Happy New Year!
73
Evan
AC9TU
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Re: uBitx V6 firmware 1.2 upgrade
Evan
One other thing you said about having the correct program for the Nextion? where does that come from??
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Re: uBitx V6 firmware 1.2 upgrade
Evan
I do not have the Nextion yet, but it is on order. You answered what I wanted to know you cannot use the stock uBitx screen. I thought that!
As for the Xloader, and as you say it is just my Firefox that is trying to stop it.
Thanks for the information, that helps a lot. I am to old for this (87), but I like playing!
Happy New Year stay safe.
Jon/KD3GZ
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Re: uBitx V6 firmware 1.2 upgrade
On Fri, Jan 1, 2021 at 02:32 PM, Jon wrote:
I am looking for someone to tell how to put this firmware into the Arduino IDE? I have not unzipped it yet....
I have followed KD8CEC this, far and do I need Xloader to do it? or how? I tried to download Xloader and it said it was a bad site to go to?
Could I use Balena Etcher?
Jon, Before you try to flash the KD8CEC firmware, do you have the Nextion screen and the correct program for it?? The KD8CEC firmware will not work with the stock uBITX screen. Since Xloader is free, the author did not register the program with Microsoft or any other program verification site.? As such it will trip the warning when you go to download it.? I have bypassed the warning and not had issues.? I cannot vouch for the site that you are using but would think that it is OK. If you do not want to trust the Xloader site/program, then you have two options: 1 - download the source code, set the correct #defines in the ubitx.h tab in the Arduino IDE.? The zip file contains only hex files that need a hex loader.? Balena Etcher would not work as far as I know. or 2 - follow the instructions in this link to use the Arduino uploader without compiling the source: To make sure all know how to help you, can you tell us what you want to accomplish by switching to the KD8CEC firmware?? 73 Evan AC9TU
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Re: Broke off screw mounts from screen
Hello Bob, Nice to know you like football. Hey, yeah, we¡¯re world champions. But I¡¯d still watch the Super Bowl. The 2021 Super Bowl will take place on February 7 in Tampa, Florida. cdt
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Hello and Happy New Year!
My name is Mircea Alex. Nemes.
I recently ordered and received the BITX V6 transceiver relatively
quickly. I assembled this transceiver without any problem, it started the transceiver
but it has no reception in any band. The touch screen works, you can
change the frequency but apart from the background noise you can't hear
anything (neither voice nor CW).
I appreciate any help in solving the problem with the lack of reception.
Thank you,
Alex Nemes
KK4FAA
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Re: uBitx V6 firmware 1.2 upgrade
I used the arduino program to put on the firmware, but...i had some problems until i switched the arduino program to "old Boodloder"
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Re: Broke off screw mounts from screen
Buy some new??, you have to pull out the screw under it also and renew them. maybe wallmarkt?? or srab box??
regards,
Rene
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Re: Problems with connecting to computer for digital
Unfortunately intermittently my Win10 or a running APP does not release one of my Comm ports. Often shutting down all apps and trying again seems to resolve it. When that doesn't work try a restart of Win10 and only run the app that is reporting com port issues. Failing that try another app that does use that same com port and rarely has issues. Basically trust nothing Usb ports, Virtual com ports eg Usb to serial, usb cables and of course the OS itself. Find what works and continue careful testing. Good luck.
On Sat, 2 Jan 2021, 1:48 am Matt Towe, < Lizooki@...> wrote: It's most likely a win10 update bomb.
Try unplugging the radio from the computer then plugging it back in.
After a year of running The N4PY Pegasus Plus software to control my Ten Tec Jupiter I suddenly started getting "does not exist" errors for my comport.
Unplugging the usb and plugging it back in after a few seconds is the only thing that works.
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Re: VARIATIONS IN SWR WHEN CONNECTING LINEAR AMP
Hello Muthu,
What do you use to switch the linear on / off?
What do you use to switch the linear to transmit / receive?
I think it could be the switching contacts, I don't see any other reasons.
Are you sure that when the linear is on, the connection between the linear and the antenna is coaxial and without any short circuits or unstable connections?
The only thing that comes to mind is to carefully check all connections and the switching relays of the linear.
-- IW4AJR Loris
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Re: Contained Power supply
Easy to find in a desktop brick.
Curiously, it appears that going to 5A does not raise the price.
? ??
Anybody have experience with any of those brand names,
able to recommend one with low noise?
A better source might be a local second hand shop.
Jeff has enough money already.
They may not work well when pushed to the limit, as Arv suggests.
So going to 5A seems a good bet.
But do put a 3A fuse inline somehow, and check polarity with a voltmeter before plugging it into your rig.
If a switcher is too noisy, you could add a filter between the power supply and the rig.
Adding a 1000uF (or more) 25vdc electrolytic cap at the rig from +12v to ground might be sufficient.
The connector given with the uBitx is 5.5x2.1mm, which is the most common size.
The outside of the plug barrel is 5.5mm, the pin in the jack is 2.1mm in diameter.
Second most common sizeis 5.5x2.5mm.
A 5.5x2.5mm plug will fit into a 5.5x2.1mm jack and you may not? notice anything wrong,
but the center pin is not making much contact when you do that.
Jerry, KE7ER
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On Fri, Jan 1, 2021 at 03:48 PM, Arv Evans wrote:
Sounds like you are looking for a wall-wart that has current enough, heavy enough wire size, and filtering enough for a uBITX.? That might be very difficult to find.??
?
Very few wall-warts do over 2 amps but you need 3 amps for a uBITX.? Most wall-warts do not have enough filtering for operation at near maximum current.
?
Arv
_-_
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?
I know I can use a bench supply, but does anyone have a good suggestion to one with the barrel already on it?
thanks!
?
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Re: Ideas for "bulletproofing" the uBitx
The Index Labs QRP Plus comes to mind. I believe they made over a thousand of them back in the early 90s. True it¡¯s not a Icom, Kenwood, Yaesu, Ten Tec, or Elecraft yet it did use a IRF510 in the final. Also many of the QRP radios of that era the original finals are now unattainable including the beloved FT817¡¯s original finals.?
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On Jan 1, 2021, at 11:39, MadRadioModder <madradiomodder@...> wrote:
? Here¡¯s the tell.? Name one name brand commercial radio that uses IRF510¡¯s as RF transistors. ? ? Mad,
Thousands of stock uBit's are operating with no trouble at all.
If the IRF510's die at all, It is almost certainly because of overheating.
Perhaps when running some digital mode, inside an enclosure, with zero airflow..
Many of the reports of blown IRF510's can be attributed to people fiddling with the gate bias pots
without first spending 10 minutes to figure out what they are doing.?
The "clockwise is minimum" pot rotation plays a big factor.
Going to RD16HHF1's will only make this mistake much more expensive.
The uBitx is designed to be a minimalist SSB rig for all of HF at minimum cost, and succeeds wildly.
If it is to be used continuously at full power in digital modes, the minimalist heatsinks should be improved.
I can imagine that a shorted antenna jack (thus infinite SWR) could play a role.
But only because the IRF510's might heat up after some period of time.
Many in the forum run the IRF510's at around 20 volts for increased power.
With an adequate heatsink, this works reliably.
If you insist on telling them they should switch over to "real" RF devices such as the RD16HHF1,
you should also warn them?not to run at much beyond 12 volts.
The qrp-labs 10W PA blows away the many claims over the years in this forum
that the IRF510's are not suitable as RF transistors.?
It simply works, flat and clean, from 3.5 to 30mhz.
And is bulletproof when operated at 12v, even when presented with a worst case SWR.
The uBitx IRF510's can be just as reliable if given a suitable heatsink.
Jerry, KE7ER
On Fri, Jan 1, 2021 at 01:31 AM, MadRadioModder wrote: Don¡¯t understand the point.? Why would you want to operate excellent RF transistors designed specifically for the 12-14V mobile world at a higher voltage?? They make all of their power in that range. ? You are correct¡ that most people won¡¯t get much out of replacing IRF devices with the RDs¡? until they blow out a set or two of them.? Then it will start to matter, because the RD devices survive much better under bad circumstances like infinite SWR.? Again, real RF transistors designed for load mismatch tolerance ?(read the app note, load tolerance spec).? Bullet-proof. ? You are also correct that most people won¡¯t spend the time to replace the IRF devices for the RD devices even after they kill a few sets.? They will just keep killing IRF510¡¯s. ?
-- ¡_. _._
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Re: Broke off screw mounts from screen
toggle quoted message
Show quoted text
Loris, one parting comment here is that the person who is most convinced is he who can convince himself. Seems that people tend to believe and accept something easiest is the person who believes he "discovered" something that may have been shown him by someone else previously. Human nature.
Thanks for the interesting discussion.
Bob ¡ª KK5R
On Friday, January 1, 2021, 4:58:44 PM EST, Loris IW4AJR via <lorisbollina= [email protected]> wrote:
Bob,
Well, personal tastes can be applied to many parts of our life, but not to science and mathematics, the thing that amazes me most is that all of us as OMs talk about kilometers, meters, centimeters and millimeters when we think of "lengths of "wave", we quietly call them kilometer, decametric, metric, down to the millimeter, but some used stupid habits to justify feet and inches in mechanical measurements ...
Mysteries of the human mind ...
Yet just as radio amateurs we know that it is enough to study a little (and not so much) to adapt to the choices of science ...
I also struggled when in astronomy we went from the common use of "light years" to "parsec", but it is normal human evolution, a little effort is enough, if we have had the patience to learn CW and measure the wavelength in meters, why not take a step forward?
I keep saying ... mysteries of the human mind !!!
Hello and end of speech, I do not want to convince anyone, they are only the complaints of a poor old man!
--?
73 de Loris?IW4AJR
On Fri, Jan 1, 2021 at 10:08 PM, Bob Lunsford wrote:
?
Loris, I can bend both ways. To people as here, that are taught the English system, it is easier and simpler for them to stay mainly with the English system because of tradition and seeing no need to learn a second system, even though it is based on the decimal system, easier to manipulate mathematically, etc., etc. You cannot convince me the metric system is more logical and common sense because I already know this. This cannot as easily be taught or accepted by those who are entrenched in a system that they have been taught since a child but with use, they can learn.
?
I like futbol and do not necessarily like American Football but here in America, this causes some of my friends to wonder about me. Watching the way Europeans and many other countries play futbol is a pleasure to me, although some women's teams do not cause this excitement nearly as much...
?
Bottom line, you don't have to convince me that the metric system is best on many fronts. Most in science and technology agree on this.
?
However:
?
"Everyone's taste is in his own mouth." {;->
?
Bob ¡ª KK5R
?
On Friday, January 1, 2021, 2:47:02 PM EST, Loris IW4AJR via <lorisbollina= [email protected]> wrote: ?
?
Hy Bob
The fact remains that in the world 6/7 billion people use the Decimal Metric System, that the ISO itself has established systems of multiples and submultiples related to the Decimal system ... I don't think that 400 or 500 million people, equal to only the 7% of the world population can continue to burden EXTRA COST over all the equipment, machinery and mechanics they import from the rest of the world with absurd costs for doubler the ingeniering for the rest of the world and maintain a measurement system that has been abandoned even by their own scientists ...
I know the inch metric comparison rules, but now, in the third millennium they are absurd and anachronistic !?it is time for the legacies of the past to be left in the past ... the future awaits us ! and the future does not belong exclusively to the USA, however big and important they may be, but to the whole world, from Europe to Asia and Africa and, not to forget, South America!
73 de
------- IW4AJR Loris
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Re: Ideas for "bulletproofing" the uBitx
The RDHFF1 does have some minor advantages over the IRF510 in the uBitx
Thermal resistance for the RD16HHF1 is 2.2 degrees C per Watt (vs 3.5 for the IRF510)
The RD16HHF1 tab is connected to the source, which can be grounded (the IRF510 has tab connected to the drain)
The RD16HHF1 is designed to operate around a 12v power supply (the IRF510 gives lowest IMD at 24v)
The RD16HHF1 might require somewhat less drive at radio frequencies (I'm not certain either way)
The RD16HHF1 datasheet actually states "VDD=15.2V,Po=16W(Pin Control) f=30MHz,Idq=0.5A,Zg=50? Load VSWR=20:1(All Phase) No destroy",
though Allison has found that her push-pull IRF510 50W amp running at 28v has survived open and shorted antenna connections.
None of those are major issues.
I think what most bugs some engineers is that the IRF510 datasheet does not describe operation as
a linear device at 30mhz.? It was intended for use at much lower frequencies, like automobile turn signals.
Getting it to work well at HF was a matter of experimentation.
If a part is designed into a product using characteristics not described adequately
in the datasheet, there is no recourse if parts start arriving that no longer work properly.
In the case of the IRF510, it's been working fine in amateur built amplifiers for 20 years.
I'm good with that.
Jerry, KE7ER
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Re: Contained Power supply
Sounds like you are looking for a wall-wart that has current enough, heavy enough wire size, and filtering enough for a uBITX.? That might be very difficult to find.??
Very few wall-warts do over 2 amps but you need 3 amps for a uBITX.? Most wall-warts do not have enough filtering for operation at near maximum current.
Arv _-_
I know I can use a bench supply, but does anyone have a good suggestion to one with the barrel already on it?
thanks!
|
Re: Broke off screw mounts from screen
Loris, one parting comment here is that the person who is most convinced is he who can convince himself. Seems that people tend to believe and accept something easiest is the person who believes he "discovered" something that may have been shown him by someone else previously. Human nature.
Thanks for the interesting discussion.
Bob ¡ª KK5R
On Friday, January 1, 2021, 4:58:44 PM EST, Loris IW4AJR via groups.io <lorisbollina@...> wrote:
Bob,
Well, personal tastes can be applied to many parts of our life, but not to science and mathematics, the thing that amazes me most is that all of us as OMs talk about kilometers, meters, centimeters and millimeters when we think of "lengths of "wave", we quietly call them kilometer, decametric, metric, down to the millimeter, but some used stupid habits to justify feet and inches in mechanical measurements ...
Mysteries of the human mind ...
Yet just as radio amateurs we know that it is enough to study a little (and not so much) to adapt to the choices of science ...
I also struggled when in astronomy we went from the common use of "light years" to "parsec", but it is normal human evolution, a little effort is enough, if we have had the patience to learn CW and measure the wavelength in meters, why not take a step forward?
I keep saying ... mysteries of the human mind !!!
Hello and end of speech, I do not want to convince anyone, they are only the complaints of a poor old man!
--?
73 de Loris?IW4AJR
On Fri, Jan 1, 2021 at 10:08 PM, Bob Lunsford wrote:
?
Loris, I can bend both ways. To people as here, that are taught the English system, it is easier and simpler for them to stay mainly with the English system because of tradition and seeing no need to learn a second system, even though it is based on the decimal system, easier to manipulate mathematically, etc., etc. You cannot convince me the metric system is more logical and common sense because I already know this. This cannot as easily be taught or accepted by those who are entrenched in a system that they have been taught since a child but with use, they can learn.
?
I like futbol and do not necessarily like American Football but here in America, this causes some of my friends to wonder about me. Watching the way Europeans and many other countries play futbol is a pleasure to me, although some women's teams do not cause this excitement nearly as much...
?
Bottom line, you don't have to convince me that the metric system is best on many fronts. Most in science and technology agree on this.
?
However:
?
"Everyone's taste is in his own mouth." {;->
?
Bob ¡ª KK5R
?
On Friday, January 1, 2021, 2:47:02 PM EST, Loris IW4AJR via groups.io <lorisbollina@...> wrote:
?
?
Hy Bob
The fact remains that in the world 6/7 billion people use the Decimal Metric System, that the ISO itself has established systems of multiples and submultiples related to the Decimal system ... I don't think that 400 or 500 million people, equal to only the 7% of the world population can continue to burden EXTRA COST over all the equipment, machinery and mechanics they import from the rest of the world with absurd costs for doubler the ingeniering for the rest of the world and maintain a measurement system that has been abandoned even by their own scientists ...
I know the inch metric comparison rules, but now, in the third millennium they are absurd and anachronistic !?it is time for the legacies of the past to be left in the past ... the future awaits us ! and the future does not belong exclusively to the USA, however big and important they may be, but to the whole world, from Europe to Asia and Africa and, not to forget, South America!
73 de
------- IW4AJR Loris
|
Re: Broke off screw mounts from screen
Bob,
Well, personal tastes can be applied to many parts of our life, but not to science and mathematics, the thing that amazes me most is that all of us as OMs talk about kilometers, meters, centimeters and millimeters when we think of "lengths of "wave", we quietly call them kilometer, decametric, metric, down to the millimeter, but some used stupid habits to justify feet and inches in mechanical measurements ...
Mysteries of the human mind ...
Yet just as radio amateurs we know that it is enough to study a little (and not so much) to adapt to the choices of science ...
I also struggled when in astronomy we went from the common use of "light years" to "parsec", but it is normal human evolution, a little effort is enough, if we have had the patience to learn CW and measure the wavelength in meters, why not take a step forward?
I keep saying ... mysteries of the human mind !!!
Hello and end of speech, I do not want to convince anyone, they are only the complaints of a poor old man!
--?
73 de Loris?IW4AJR
On Fri, Jan 1, 2021 at 10:08 PM, Bob Lunsford wrote:
?
Loris, I can bend both ways. To people as here, that are taught the English system, it is easier and simpler for them to stay mainly with the English system because of tradition and seeing no need to learn a second system, even though it is based on the decimal system, easier to manipulate mathematically, etc., etc. You cannot convince me the metric system is more logical and common sense because I already know this. This cannot as easily be taught or accepted by those who are entrenched in a system that they have been taught since a child but with use, they can learn.
?
I like futbol and do not necessarily like American Football but here in America, this causes some of my friends to wonder about me. Watching the way Europeans and many other countries play futbol is a pleasure to me, although some women's teams do not cause this excitement nearly as much...
?
Bottom line, you don't have to convince me that the metric system is best on many fronts. Most in science and technology agree on this.
?
However:
?
"Everyone's taste is in his own mouth." {;->
?
Bob ¡ª KK5R
?
On Friday, January 1, 2021, 2:47:02 PM EST, Loris IW4AJR via groups.io <lorisbollina@...> wrote:
?
?
Hy Bob
The fact remains that in the world 6/7 billion people use the Decimal Metric System, that the ISO itself has established systems of multiples and submultiples related to the Decimal system ... I don't think that 400 or 500 million people, equal to only the 7% of the world population can continue to burden EXTRA COST over all the equipment, machinery and mechanics they import from the rest of the world with absurd costs for doubler the ingeniering for the rest of the world and maintain a measurement system that has been abandoned even by their own scientists ...
I know the inch metric comparison rules, but now, in the third millennium they are absurd and anachronistic !?it is time for the legacies of the past to be left in the past ... the future awaits us ! and the future does not belong exclusively to the USA, however big and important they may be, but to the whole world, from Europe to Asia and Africa and, not to forget, South America!
73 de
------- IW4AJR Loris
|
Bob Lunsford
Gerard
Loris Bollina
Skip Davis
