Re: T41 SDT Version 66 with Calibration
Hi Al,
Thanks for clarifying the need for the user supplied audio tone during xmit IQ cal. I will give that a try and report back.
Rick, KN4AIE
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To Everyone having problems with SSB calibration, especially SSB PA power. I did not make it very clear that a signal must be applied to the Mic jack. I will emphasize this in the final version of the Calibration instructions.
I use 1KHz from a signal generator at about 20mV. Set the Mic gain to zero (0) and the power level to 10W. The objective is to set the Mic gain so you get 10W out for an appropriate input signal. In as much as this varies from rig to rig, we can't exactly
specify a signal level.?
?
CW Pa adjustment uses an internally generated signal.
?
it is important that the Cal steps be done in order. Especially check that Transmit IQ setting is done prior to doing the SSB PA power cal.
?
I just tried all of the Calibration modes with V66.3, and everything works properly on my system.
?
If you are still having SSB Power issues, please check to make sure that an audio signal is getting into the system. Check the connections between the Audio hat and the Main board.
?
Hope this works.
Al
AC8GY
|
Bob,
Attached is a report showing what I did on 6M.? See the chart on pg 2.
dave, n3ds
On Thu, Feb 27, 2025 at 9:10?AM Robert Luken W3RDL via <now.w3rdl= [email protected]> wrote: I started to wind the coils for the 6m band and am confused about L601,
L603, and L605. The directions say L601 and L605 are 39nH, 5" 24AWG, 5
turns on a 1/8" drill bit. However, L603 is 24nH, 4" 24AWG, 7 turns on a
1/8" drill bit. How can 7 turns require less wire than 5 turns and how
can 7 turns have less inductance than 5 turns?
Bob W3RDL
--
This email has been checked for viruses by Avast antivirus software.
|
Re: T41 SDT Version 66 with Calibration
To Everyone having problems with SSB calibration, especially SSB PA power. I did not make it very clear that a signal must be applied to the Mic jack. I will emphasize this in the final version of the Calibration instructions.
I use 1KHz from a signal generator at about 20mV. Set the Mic gain to zero (0) and the power level to 10W. The objective is to set the Mic gain so you get 10W out for an appropriate input signal. In as much as this varies from rig to rig, we can't exactly specify a signal level.?
?
CW Pa adjustment uses an internally generated signal.
?
it is important that the Cal steps be done in order. Especially check that Transmit IQ setting is done prior to doing the SSB PA power cal.
?
I just tried all of the Calibration modes with V66.3, and everything works properly on my system.
?
If you are still having SSB Power issues, please check to make sure that an audio signal is getting into the system. Check the connections between the Audio hat and the Main board.
?
Hope this works.
Al
AC8GY
|
Re: T41 SDT Version 66.3 with Calibration
Al, 66.3 seems to have improved the button response but hasn't cured TX calibrate issue. All I can see on my spectrum analyser is a very low level carrier around -90dBm.
?
Roger G8JWT
|
I started to wind the coils for the 6m band and am confused about L601, L603, and L605. The directions say L601 and L605 are 39nH, 5" 24AWG, 5 turns on a 1/8" drill bit. However, L603 is 24nH, 4" 24AWG, 7 turns on a 1/8" drill bit. How can 7 turns require less wire than 5 turns and how can 7 turns have less inductance than 5 turns?
Bob W3RDL
--
This email has been checked for viruses by Avast antivirus software.
www.avast.com
|
Re: slow starting on T41 kit
I can view and down load PDF's fine. I think some of the V12 Schematics in PDF format are missing from Git Hub though.
Tim W4YN
|
Re: slow starting on T41 kit
Whose PDFs and from where? The fact that there don't seem to be others with the problem, perhaps your viewer isn't working correctly. Can you view PDFs from other sources?
Jack, W8TEE
On Thursday, February 27, 2025 at 08:39:06 AM EST, Ron VE8RT <ve8rt@...> wrote:
Over the last couple of days I've made attempts to view the .pdf files, both on my Ubuntu desktop and a Win& laptop at work.? The .pdf are not working, instead I have this message: Unable to render code block
?
At this point I don't know what I can do to view the files.
?
Ron
-- Jack, W8TEE
|
Re: slow starting on T41 kit
Over the last couple of days I've made attempts to view the .pdf files, both on my Ubuntu desktop and a Win& laptop at work.? The .pdf are not working, instead I have this message: Unable to render code block
?
At this point I don't know what I can do to view the files.
?
Ron
|
Re: slow starting on T41 kit
Actually you can mix and match the earlier version boards with the newer versions¡ check the upgrade paths on my GITHUB here: ?
? ? Dr. William J. Schmidt - K9HZ J68HZ 8P6HK ZF2HZ PJ4/K9HZ VP5/K9HZ PJ2/K9HZ VP2EHZ ? Owner - Operator Big Signal Ranch ¨C K9ZC Staunton, Illinois ? Owner ¨C Operator Villa Grand Piton ¨C J68HZ Soufriere, St. Lucia W.I. Rent it: ? Moderator: North American QRO Group at Groups.IO. Moderator: Amateur Radio Builders Group at Groups.IO. ? email:? bill@... ? ?
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Show quoted text
From: [email protected] <[email protected]> On Behalf Of jjpurdum via groups.io
Sent: Wednesday, February 26, 2025 8:41 AM
To: [email protected]
Subject: Re: [SoftwareControlledHamRadio] slow starting on T41 kit? The cost from Dr. Schmidt for new 12.6 boards is minimal, but if you have boards with the SMDs already in place, I would finish the kit with what you have. If you're not happy with what results, converting to new boards wouldn't be too bad, as you might be able to cannibalize most of the expensive parts from the existing boards.? Another alternative is to buy the populated board(s) from Justin (). One more thing: I have a 4SQRP system and it works well. That said, I did swap out the PA board for Bill's PA and it is much better than our original design as it doesn't try to fit a square peg (i.e., the IRF510) into a round hole, resulting in a much better power curve that it flat out to 6M. It's worth it. On Tuesday, February 25, 2025 at 11:28:52 PM EST, Ron VE8RT <ve8rt@...> wrote: Great, very good news as I ordered it this morning.
Question regarding my kit I'd left boxed up since Dec 2023.? My boards
have a 2023 date on them, they also have ver 009b.? Looking at the
images of the boards at
I'm not finding ver 009b info.? ver 010 or 011 images of boards have
dates from 2022 or thereabouts, a year before my boards.
? Hopefully my Teensy 4.1 and audio board will work with my boards.
? Also the filter boards has the legacy five bands, I would like to
operate on 60M.? Will it work on 60M as is or should I look at
upgrading some boards?? This is the best time for me to make any
changes.
? Thanks!? Ron VE8RT
On Tue, 25 Feb 2025 10:10:19 -0600
"K9HZ" <bill@...> wrote:
> Still an option¡
>
>?
>
>?
>
> Dr. William J. Schmidt - K9HZ J68HZ 8P6HK ZF2HZ PJ4/K9HZ VP5/K9HZ PJ2/K9HZ VP2EHZ
>
>?
>
> Owner - Operator
>
> Big Signal Ranch ¨C K9ZC
>
> Staunton, Illinois
>
>?
>
> Owner ¨C Operator
>
> Villa Grand Piton ¨C J68HZ
>
> Soufriere, St. Lucia W.I.
>
> Rent it:? <>
>
>?
>
> Moderator: North American QRO Group at Groups.IO.
>
> Moderator: Amateur Radio Builders Group at Groups.IO.
>
>?
>
> email:? <mailto:bill@...> bill@...
>
>?
>
>?
>
> From: [email protected] <[email protected]> On Behalf Of jjpurdum via groups.io
> Sent: Tuesday, February 25, 2025 8:17 AM
> To: [email protected]
> Subject: Re: [SoftwareControlledHamRadio] slow starting on T41 kit
>
>?
>
> Ron:
>
>?
>
> I haven't ordered a display recently, but there was a 3.3-5.0V jumper on the back (J8) that let's me select between the two voltages. Maybe that's no longer an option?
>
>?
>
>
>
> Jack, W8TEE
>
>?
>
> On Tuesday, February 25, 2025 at 08:54:50 AM EST, Ron VE8RT <ve8rt@... <mailto:ve8rt@...> > wrote:
>
>?
>
>?
>
> Everything has been ordered.? After reading the messages regarding
>
> display noise and 3.3 vs 5.0 volt options I ordered the 5.0 volt
>
> display.
>
>?
>
>? Ron VE8RT
>
>?
>
> On Mon, 24 Feb 2025 06:40:59 -0700
>
> "Ron VE8RT" <ve8rt@... <mailto:ve8rt@...> > wrote:
>
>?
>
> > Thank you,
>
> >
>
> >? ? I'll carry on, appreciate your saving me scanning over a year's of
>
> > posts to the lists to check for recommended changes since my kit
>
> > arrived.
>
> >
>
> >? ? So wishing that I was retired already, I'll be 70 this year.? Stuck
>
> > around because my boss <>? won't hire an apprentice
>
> > or replacement, I'm one of the old guys with experience on his own
>
> > fleet plus the DC's, C-54 (retired now), L-188, and our fire fighting
>
> > fleet which includes CL-215s (piston ones from the 60's).? The next few
>
> > weeks is my break before fire season gets going again (not only
>
> > lightning, also re-animated zombie fires).
>
> >
>
> >? ? The required parts will be ordered this week.
>
> >
>
> >? ? 73? Ron VE8RT
>
> >
>
> > On Mon, 24 Feb 2025 13:26:39 +0000 (UTC)
>
> > "jjpurdum via groups.io" <jjpurdum@... <mailto:jjpurdum@...> > wrote:
>
> >
>
> > >? Your kit does not include the Teensy 4.1 or the Audio Hat, either (available from PJRC.com). The display is ordered from BuyDisplay.com and is a Chinese company so it will take some time. The correct model number is in the Files section of this site.
>
> > > Jack, W8TEE
>
> > >? ? On Sunday, February 23, 2025 at 11:20:41 PM EST, Ron VE8RT <ve8rt@... <mailto:ve8rt@...> > wrote:?
>
> > >?
>
> > >? ? I was furtunate enough to received from Ron AG1P a T41 kit back in
>
> > > December of 2023.? The plan to get to it in early 2024 didn't work out,
>
> > > I've just this last week gone through the box and have a good start on
>
> > > the book.?
>
> > >
>
> > >? Before I dive into building it are there modifications or other that
>
> > > I should do right away?? The 5 inch display and other not included in
>
> > > the box I should get on order ASAP.? Retirement should have happened in
>
> > > 2020, hopefully this later this year.
>
> > >
>
> > >? Ron VE8RT
>
> > >
>
> > > --
>
> > > Ron VE8RT <ve8rt@... <mailto:ve8rt@...> >
>
> > >
>
> > >
>
> > >
>
> > >
>
> > >
>
> > >?
>
> > >
>
> > >
>
> > >
>
> > >
>
> > >
>
> >
>
> >
>
> > --
>
> > Ron VE8RT <ve8rt@... <mailto:ve8rt@...> >
>
> >
>
> >
>
> >
>
> >
>
> >
>
>?
>
>?
>
> --
>
> Ron VE8RT <ve8rt@... <mailto:ve8rt@...> >
>
>?
>
>?
>
>?
>
>?
>
>?
>
>
> --
> Jack, W8TEE
>
>
>
>
>
>
>
>
--
Ron VE8RT <ve8rt@...>
--
Jack, W8TEE
|
Re: T41 SDT Version 66.3 with Calibration
Hi Al, Tried your latest release 066-3 and still cannot get IQ xmit cal to work. RF is a little better but no tone or very low. Thinking I might have a problem I loaded in a release from 01-07-25, attached zip, and using your latest CAL instructions using my FT-991A I am able to calibrate IQ xmit, only tried 7200 but it did work. I also used this version on my Tiny SA ULTRA and got the same numbers. Maybe they are not right Gain 1.007 Phase -0.02 and not even sure this software version is doing it correctly? Rick, KN4AIE On Wed, Feb 26, 2025 at 5:36?PM Albert Peter via groups.io <albertfpeter@...> wrote:
This version fixes the button response problem in Receive Cal and a couple of other small issues.
Al
AC8GY
|
Re: T41 SDT Version 66.3 with Calibration
This version fixes the button response problem in Receive Cal and a couple of other small issues.
Al
AC8GY
|
Re: T41 SDT Version 66 with Calibration
Same thing here. Very weak carrier at -80dBm. Nothing more.
?
G8JWT
|
Re: T41 SDT Version 66 with Calibration
Just started the xmit cal, also no tone on PTT, seems like a weak carrier is present.? Previous version 3 or 4 weeks ago, Olivers release, worked ok on xmit using my tiny SA.? Rec cal works fine.??
Rick, KN4AIE
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Show quoted text
Thanks Al and Oliver for the new code and instructions.? I have run through the freq cal and receive cal with no problem.? I have a receiver/SA hooked up to the Ant1 out, and am, in the Calibrate
TX screen, but see no signal when I ground PTT_In on J9.? The D4 LED illuminates.? I have all cables hooked up, I think.? Any suggestions?
dave, n3ds
Install the following libraries via the Arduino Library Manager:
- Adafruit MCP23017 Arduino Library, by Adafruit (v2.3.2) (note: install with dependencies)
- Adafruit GFX Library, by Adafruit (v1.11.11) (note: install with dependencies)
- ArduinoJson, by Benoit Blanchon (v7.3.0)
- Chrono, by Thomas O. Fredericks (v1.2.0)
- Timer, by Stefan Staub (v1.2.1)
Several libraries need to be installed manually. The manual process is:
- Go to the provided GitHub link for the library and download the library as a zip by clicking Code -> Download ZIP.
- Import it into the Arduino 2 IDE by clicking Sketch -> Include Library -> Add .ZIP library, and then selecting the file you just downloaded.
The libraries to install using this process are:
- OpenAudio:
- Regressino:
- Arduino Regression:
?
The file Config.h?includes several compiler options which add, subtract, or adjust parameters of some features. Please review this file prior to compilation.
Completing a FLASH erase of the Teensy is strongly recommended before uploading this new version. The instructions for performing a FLASH erase of the Teensy are at
?under the bullet "Memory Wipe & LED Blink Restore".
Select the Teensy 4.1 board, and select the following build configuration options:
- Tools->Optimize->Fast with LTO
- Tools->USB Type->Dual Serial
- Tools->CPU Speed->600 MHz
Some people report success running the CPU at 528 MHz. The memory usage after compiling should look like this:
? FLASH: code:272292, data:129336, headers:8988 ? free for files:7715848
? RAM1: variables:178112, code:249800, padding:12344 ? free for local variables:84032
? RAM2: variables:474720 ?free for malloc/new:49568
|
Re: T41 SDT Version 66 with Calibration
Thanks Al and Oliver for the new code and instructions.? I have run through the freq cal and receive cal with no problem.? I have a receiver/SA hooked up to the Ant1 out, and am, in the Calibrate TX screen, but see no signal when I ground PTT_In on J9.? The D4 LED illuminates.? I have all cables hooked up, I think.? Any suggestions?
dave, n3ds
Install the following libraries via the Arduino Library Manager:
- Adafruit MCP23017 Arduino Library, by Adafruit (v2.3.2) (note: install with dependencies)
- Adafruit GFX Library, by Adafruit (v1.11.11) (note: install with dependencies)
- ArduinoJson, by Benoit Blanchon (v7.3.0)
- Chrono, by Thomas O. Fredericks (v1.2.0)
- Timer, by Stefan Staub (v1.2.1)
Several libraries need to be installed manually. The manual process is:
- Go to the provided GitHub link for the library and download the library as a zip by clicking Code -> Download ZIP.
- Import it into the Arduino 2 IDE by clicking Sketch -> Include Library -> Add .ZIP library, and then selecting the file you just downloaded.
The libraries to install using this process are:
- OpenAudio:
- Regressino:
- Arduino Regression:
?
The file Config.h includes several compiler options which add, subtract, or adjust parameters of some features. Please review this file prior to compilation.
Completing a FLASH erase of the Teensy is strongly recommended before uploading this new version. The instructions for performing a FLASH erase of the Teensy are at under the bullet "Memory Wipe & LED Blink Restore".
Select the Teensy 4.1 board, and select the following build configuration options:
- Tools->Optimize->Fast with LTO
- Tools->USB Type->Dual Serial
- Tools->CPU Speed->600 MHz
Some people report success running the CPU at 528 MHz. The memory usage after compiling should look like this:
FLASH: code:272292, data:129336, headers:8988 free for files:7715848
RAM1: variables:178112, code:249800, padding:12344 free for local variables:84032
RAM2: variables:474720 free for malloc/new:49568
|
Re: T41 SDT Version 66 with Calibration
I reset the Teensy and loaded the version 66.1 S/W. Everything
seems to work. I did the Frequency Calibration with a GDO @10MHz
and got ~0.1Hz error. However, when I tried the Receive IQ
Calibration, I couldn't start Autotune. There seems to be a
problem recognizing the pushbuttons. I could only get "Increment"
and "Save" to work, and they took several key presses. The
information display shows both "Decode" and "User 2" used for
Autotune/Autocal. I was able to perform the calibration manually
with increment = 0.001, and corrected to -75dB to -80dB on all
bands. The pushbuttons work fine otherwise. Does the Mode or Demod
matter before starting the Receive IQ Cal?
On 2/24/2025 5:39 PM, Albert Peter via
groups.io wrote:
Hi Everyone,
I have attached the latest version of the T41 code. I believe
it is in good shape but has yet to be thoroughly vetted. I am
posting it now, ahead of a formal release to enable some of the
builders who are having a difficult time with earlier versions
to run a known working version.
This version has the latest Calibration routines; however, it
has not gone through Jack's review yet. Jack and I agreed to put
this out temporarily so you can give it a try.
Please report any issues to Jack and me.
We will review the code and post a final release in a week or
so.
I am also attaching a copy of the Calibration instructions
PDF. You will also find abbreviated instructions in each
calibration routine.
?
Note that this is for V12.6 hardware only.
Some of the calibration routines will not work with V11 or
earlier.
?
It is good practice to erase the Teensy4.1 prior to
up-loading, since much of the EEPROM has changed. To clear all
memory, press and hold the Teensy load button until the LED by
the USB port flashes. Release and wait until the main LED begins
to flash. The Blink program is then loaded and EEPROM is
cleared.
In the code go the Setup in the .ino file and uncomment the
line at 3130 the first time you upload. Comment out that line
the next time you upload.
In the IDE select "Optimize: Faster with LTO", set the USB
type to "Serial". You may have to select the Teensy port the
first time you upload.
?
We encourage everyone to upgrade to V12.6 Main and RF boards.
The V12.6 performance is greatly enhanced.
Good luck and let us know how it works for you.
Regards,
Al Peter
AC8GY
--
73
Bob W3RDL
|
Re: slow starting on T41 kit
Thanks, good luck with the contest.?
?
My shop and hamshack are in a bad state at the moment.? Age, some health limitations, and I come home from work expended.? Lately I've been doing better, and have time and energy for the T41 and also some shop & shack organizing and space making.
?
We're a family of amateurs, XYL Laura VE8LT is talking about getting more involved even suggesting she help out in a contest.? Son Nathan VE8TN who lives with us hasn't his own HF station - a more inviting operating space in the house might encourage him.
?
I'll take you up on the boards, my order will go later as you've requested.
?
The existing kit will be built, and used as an experimental platform as it was intended to be.? I'm looking forward to making progress.
Many thanks for the support here!
?
|
Re: slow starting on T41 kit
A full set of V12 boards (16 boards total) is now $17.68 plus shipping (was $14.28 plus shipping a year ago)¡. The production costs have increased at the manufacturer¡¯s end.? Three of the boards are 4-layer boards so that is quite a bargain. ? I¡¯m off contesting for the next two weeks¡ so hold off with orders until I get back.? AND WORK US, J62K AND SPOT US in the contests!!! ? ? Dr. William J. Schmidt - K9HZ J68HZ 8P6HK ZF2HZ PJ4/K9HZ VP5/K9HZ PJ2/K9HZ VP2EHZ ? Owner - Operator Big Signal Ranch ¨C K9ZC Staunton, Illinois ? Owner ¨C Operator Villa Grand Piton ¨C J68HZ Soufriere, St. Lucia W.I. Rent it: ? Moderator: North American QRO Group at Groups.IO. Moderator: Amateur Radio Builders Group at Groups.IO. ? email:? bill@... ? ?
toggle quoted message
Show quoted text
From: [email protected] <[email protected]> On Behalf Of jjpurdum via groups.io
Sent: Wednesday, February 26, 2025 8:41 AM
To: [email protected]
Subject: Re: [SoftwareControlledHamRadio] slow starting on T41 kit? The cost from Dr. Schmidt for new 12.6 boards is minimal, but if you have boards with the SMDs already in place, I would finish the kit with what you have. If you're not happy with what results, converting to new boards wouldn't be too bad, as you might be able to cannibalize most of the expensive parts from the existing boards.? Another alternative is to buy the populated board(s) from Justin (). One more thing: I have a 4SQRP system and it works well. That said, I did swap out the PA board for Bill's PA and it is much better than our original design as it doesn't try to fit a square peg (i.e., the IRF510) into a round hole, resulting in a much better power curve that it flat out to 6M. It's worth it. On Tuesday, February 25, 2025 at 11:28:52 PM EST, Ron VE8RT <ve8rt@...> wrote: Great, very good news as I ordered it this morning.
Question regarding my kit I'd left boxed up since Dec 2023.? My boards
have a 2023 date on them, they also have ver 009b.? Looking at the
images of the boards at
I'm not finding ver 009b info.? ver 010 or 011 images of boards have
dates from 2022 or thereabouts, a year before my boards.
? Hopefully my Teensy 4.1 and audio board will work with my boards.
? Also the filter boards has the legacy five bands, I would like to
operate on 60M.? Will it work on 60M as is or should I look at
upgrading some boards?? This is the best time for me to make any
changes.
? Thanks!? Ron VE8RT
On Tue, 25 Feb 2025 10:10:19 -0600
"K9HZ" <bill@...> wrote:
> Still an option¡
>
>?
>
>?
>
> Dr. William J. Schmidt - K9HZ J68HZ 8P6HK ZF2HZ PJ4/K9HZ VP5/K9HZ PJ2/K9HZ VP2EHZ
>
>?
>
> Owner - Operator
>
> Big Signal Ranch ¨C K9ZC
>
> Staunton, Illinois
>
>?
>
> Owner ¨C Operator
>
> Villa Grand Piton ¨C J68HZ
>
> Soufriere, St. Lucia W.I.
>
> Rent it:? <>
>
>?
>
> Moderator: North American QRO Group at Groups.IO.
>
> Moderator: Amateur Radio Builders Group at Groups.IO.
>
>?
>
> email:? <mailto:bill@...> bill@...
>
>?
>
>?
>
> From: [email protected] <[email protected]> On Behalf Of jjpurdum via groups.io
> Sent: Tuesday, February 25, 2025 8:17 AM
> To: [email protected]
> Subject: Re: [SoftwareControlledHamRadio] slow starting on T41 kit
>
>?
>
> Ron:
>
>?
>
> I haven't ordered a display recently, but there was a 3.3-5.0V jumper on the back (J8) that let's me select between the two voltages. Maybe that's no longer an option?
>
>?
>
>
>
> Jack, W8TEE
>
>?
>
> On Tuesday, February 25, 2025 at 08:54:50 AM EST, Ron VE8RT <ve8rt@... <mailto:ve8rt@...> > wrote:
>
>?
>
>?
>
> Everything has been ordered.? After reading the messages regarding
>
> display noise and 3.3 vs 5.0 volt options I ordered the 5.0 volt
>
> display.
>
>?
>
>? Ron VE8RT
>
>?
>
> On Mon, 24 Feb 2025 06:40:59 -0700
>
> "Ron VE8RT" <ve8rt@... <mailto:ve8rt@...> > wrote:
>
>?
>
> > Thank you,
>
> >
>
> >? ? I'll carry on, appreciate your saving me scanning over a year's of
>
> > posts to the lists to check for recommended changes since my kit
>
> > arrived.
>
> >
>
> >? ? So wishing that I was retired already, I'll be 70 this year.? Stuck
>
> > around because my boss <>? won't hire an apprentice
>
> > or replacement, I'm one of the old guys with experience on his own
>
> > fleet plus the DC's, C-54 (retired now), L-188, and our fire fighting
>
> > fleet which includes CL-215s (piston ones from the 60's).? The next few
>
> > weeks is my break before fire season gets going again (not only
>
> > lightning, also re-animated zombie fires).
>
> >
>
> >? ? The required parts will be ordered this week.
>
> >
>
> >? ? 73? Ron VE8RT
>
> >
>
> > On Mon, 24 Feb 2025 13:26:39 +0000 (UTC)
>
> > "jjpurdum via groups.io" <jjpurdum@... <mailto:jjpurdum@...> > wrote:
>
> >
>
> > >? Your kit does not include the Teensy 4.1 or the Audio Hat, either (available from PJRC.com). The display is ordered from BuyDisplay.com and is a Chinese company so it will take some time. The correct model number is in the Files section of this site.
>
> > > Jack, W8TEE
>
> > >? ? On Sunday, February 23, 2025 at 11:20:41 PM EST, Ron VE8RT <ve8rt@... <mailto:ve8rt@...> > wrote:?
>
> > >?
>
> > >? ? I was furtunate enough to received from Ron AG1P a T41 kit back in
>
> > > December of 2023.? The plan to get to it in early 2024 didn't work out,
>
> > > I've just this last week gone through the box and have a good start on
>
> > > the book.?
>
> > >
>
> > >? Before I dive into building it are there modifications or other that
>
> > > I should do right away?? The 5 inch display and other not included in
>
> > > the box I should get on order ASAP.? Retirement should have happened in
>
> > > 2020, hopefully this later this year.
>
> > >
>
> > >? Ron VE8RT
>
> > >
>
> > > --
>
> > > Ron VE8RT <ve8rt@... <mailto:ve8rt@...> >
>
> > >
>
> > >
>
> > >
>
> > >
>
> > >
>
> > >?
>
> > >
>
> > >
>
> > >
>
> > >
>
> > >
>
> >
>
> >
>
> > --
>
> > Ron VE8RT <ve8rt@... <mailto:ve8rt@...> >
>
> >
>
> >
>
> >
>
> >
>
> >
>
>?
>
>?
>
> --
>
> Ron VE8RT <ve8rt@... <mailto:ve8rt@...> >
>
>?
>
>?
>
>?
>
>?
>
>?
>
>
> --
> Jack, W8TEE
>
>
>
>
>
>
>
>
--
Ron VE8RT <ve8rt@...>
--
Jack, W8TEE
|
Re: FrankenT41 on the air
On 2025-02-25 16:59, rebruhnke via groups.io wrote: Very nice Jerry. My amp is "hollow" state using a 3-500Z. Always
wanted to build a tube one and I finally did it. *** Wow. What a mix of technologies. FPGAs at one end, a tube at the other! My first amp project used tubes. Back in high school. 4 6LQ6's stuffed into an ARC5 transmitter cabinet. I think it did about 400W out. - Jerry, KF6VB
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Re: slow starting on T41 kit
Ron:
The cost from Dr. Schmidt for new 12.6 boards is minimal, but if you have boards with the SMDs already in place, I would finish the kit with what you have. If you're not happy with what results, converting to new boards wouldn't be too bad, as you might be able to cannibalize most of the expensive parts from the existing boards.? Another alternative is to buy the populated board(s) from Justin ().
One more thing: I have a 4SQRP system and it works well. That said, I did swap out the PA board for Bill's PA and it is much better than our original design as it doesn't try to fit a square peg (i.e., the IRF510) into a round hole, resulting in a much better power curve that it flat out to 6M. It's worth it.
Jack, W8TEE
On Tuesday, February 25, 2025 at 11:28:52 PM EST, Ron VE8RT <ve8rt@...> wrote:
Great, very good news as I ordered it this morning.
Question regarding my kit I'd left boxed up since Dec 2023.? My boards
have a 2023 date on them, they also have ver 009b.? Looking at the
images of the boards at
I'm not finding ver 009b info.? ver 010 or 011 images of boards have
dates from 2022 or thereabouts, a year before my boards.
? Hopefully my Teensy 4.1 and audio board will work with my boards.
? Also the filter boards has the legacy five bands, I would like to
operate on 60M.? Will it work on 60M as is or should I look at
upgrading some boards?? This is the best time for me to make any
changes.
? Thanks!? Ron VE8RT
On Tue, 25 Feb 2025 10:10:19 -0600 "K9HZ" < bill@...> wrote: > Still an option¡ > >? > >? > > Dr. William J. Schmidt - K9HZ J68HZ 8P6HK ZF2HZ PJ4/K9HZ VP5/K9HZ PJ2/K9HZ VP2EHZ > >? > > Owner - Operator > > Big Signal Ranch ¨C K9ZC > > Staunton, Illinois > >? > > Owner ¨C Operator > > Villa Grand Piton ¨C J68HZ > > Soufriere, St. Lucia W.I. > > Rent it:? <> www.VillaGrandPiton.com > >? > > Moderator: North American QRO Group at Groups.IO. > > Moderator: Amateur Radio Builders Group at Groups.IO. > >? > > email:? <mailto:bill@...> bill@...> >? > >? > > From: [email protected] < [email protected]> On Behalf Of jjpurdum via groups.io > Sent: Tuesday, February 25, 2025 8:17 AM > To: [email protected]> Subject: Re: [SoftwareControlledHamRadio] slow starting on T41 kit > >? > > Ron: > >? > > I haven't ordered a display recently, but there was a 3.3-5.0V jumper on the back (J8) that let's me select between the two voltages. Maybe that's no longer an option? > >? > > > > Jack, W8TEE > >? > > On Tuesday, February 25, 2025 at 08:54:50 AM EST, Ron VE8RT < ve8rt@... <mailto:ve8rt@...> > wrote: > >? > >? > > Everything has been ordered.? After reading the messages regarding > > display noise and 3.3 vs 5.0 volt options I ordered the 5.0 volt > > display. > >? > >? Ron VE8RT > >? > > On Mon, 24 Feb 2025 06:40:59 -0700 > > "Ron VE8RT" < ve8rt@... <mailto:ve8rt@...> > wrote: > >? > > > Thank you, > > > > > >? ? I'll carry on, appreciate your saving me scanning over a year's of > > > posts to the lists to check for recommended changes since my kit > > > arrived. > > > > > >? ? So wishing that I was retired already, I'll be 70 this year.? Stuck > > > around because my boss www.buffaloairways.com <>? won't hire an apprentice > > > or replacement, I'm one of the old guys with experience on his own > > > fleet plus the DC's, C-54 (retired now), L-188, and our fire fighting > > > fleet which includes CL-215s (piston ones from the 60's).? The next few > > > weeks is my break before fire season gets going again (not only > > > lightning, also re-animated zombie fires). > > > > > >? ? The required parts will be ordered this week. > > > > > >? ? 73? Ron VE8RT > > > > > > On Mon, 24 Feb 2025 13:26:39 +0000 (UTC) > > > "jjpurdum via groups.io" <jjpurdum@... <mailto:jjpurdum@...> > wrote: > > > > > > >? Your kit does not include the Teensy 4.1 or the Audio Hat, either (available from PJRC.com). The display is ordered from BuyDisplay.com and is a Chinese company so it will take some time. The correct model number is in the Files section of this site. > > > > Jack, W8TEE > > > >? ? On Sunday, February 23, 2025 at 11:20:41 PM EST, Ron VE8RT < ve8rt@... <mailto:ve8rt@...> > wrote:? > > > >? > > > >? ? I was furtunate enough to received from Ron AG1P a T41 kit back in > > > > December of 2023.? The plan to get to it in early 2024 didn't work out, > > > > I've just this last week gone through the box and have a good start on > > > > the book.? > > > > > > > >? Before I dive into building it are there modifications or other that > > > > I should do right away?? The 5 inch display and other not included in > > > > the box I should get on order ASAP.? Retirement should have happened in > > > > 2020, hopefully this later this year. > > > > > > > >? Ron VE8RT > > > > > > > > -- > > > > Ron VE8RT < ve8rt@... <mailto:ve8rt@...> > > > > > > > > > > > > > > > > > > > > > > > > >? > > > > > > > > > > > > > > > > > > > > > > > > > > > > > -- > > > Ron VE8RT < ve8rt@... <mailto:ve8rt@...> > > > > > > > > > > > > > > > > > >? > >? > > -- > > Ron VE8RT < ve8rt@... <mailto:ve8rt@...> > > >? > >? > >? > >? > >? > > > -- > Jack, W8TEE > > > > > > > > -- Ron VE8RT < ve8rt@...>
-- Jack, W8TEE
|
Re: slow starting on T41 kit
Great, very good news as I ordered it this morning. Question regarding my kit I'd left boxed up since Dec 2023. My boards have a 2023 date on them, they also have ver 009b. Looking at the images of the boards at I'm not finding ver 009b info. ver 010 or 011 images of boards have dates from 2022 or thereabouts, a year before my boards. Hopefully my Teensy 4.1 and audio board will work with my boards. Also the filter boards has the legacy five bands, I would like to operate on 60M. Will it work on 60M as is or should I look at upgrading some boards? This is the best time for me to make any changes. Thanks! Ron VE8RT On Tue, 25 Feb 2025 10:10:19 -0600 "K9HZ" <bill@...> wrote: Still an option¡
Dr. William J. Schmidt - K9HZ J68HZ 8P6HK ZF2HZ PJ4/K9HZ VP5/K9HZ PJ2/K9HZ VP2EHZ
Owner - Operator
Big Signal Ranch ¨C K9ZC
Staunton, Illinois
Owner ¨C Operator
Villa Grand Piton ¨C J68HZ
Soufriere, St. Lucia W.I.
Rent it: <> www.VillaGrandPiton.com
Moderator: North American QRO Group at Groups.IO.
Moderator: Amateur Radio Builders Group at Groups.IO.
email: <mailto:bill@...> bill@...
From: [email protected] <[email protected]> On Behalf Of jjpurdum via groups.io
Sent: Tuesday, February 25, 2025 8:17 AM
To: [email protected]
Subject: Re: [SoftwareControlledHamRadio] slow starting on T41 kit
Ron:
I haven't ordered a display recently, but there was a 3.3-5.0V jumper on the back (J8) that let's me select between the two voltages. Maybe that's no longer an option?
Jack, W8TEE
On Tuesday, February 25, 2025 at 08:54:50 AM EST, Ron VE8RT <ve8rt@... <mailto:ve8rt@...> > wrote:
Everything has been ordered. After reading the messages regarding
display noise and 3.3 vs 5.0 volt options I ordered the 5.0 volt
display.
Ron VE8RT
On Mon, 24 Feb 2025 06:40:59 -0700
"Ron VE8RT" <ve8rt@... <mailto:ve8rt@...> > wrote:
Thank you, I'll carry on, appreciate your saving me scanning over a year's of posts to the lists to check for recommended changes since my kit arrived. So wishing that I was retired already, I'll be 70 this year. Stuck around because my boss www.buffaloairways.com <> won't hire an apprentice or replacement, I'm one of the old guys with experience on his own fleet plus the DC's, C-54 (retired now), L-188, and our fire fighting fleet which includes CL-215s (piston ones from the 60's). The next few weeks is my break before fire season gets going again (not only lightning, also re-animated zombie fires). The required parts will be ordered this week. 73 Ron VE8RT On Mon, 24 Feb 2025 13:26:39 +0000 (UTC) "jjpurdum via groups.io" <jjpurdum@... <mailto:jjpurdum@...> > wrote: Your kit does not include the Teensy 4.1 or the Audio Hat, either (available from PJRC.com). The display is ordered from BuyDisplay.com and is a Chinese company so it will take some time. The correct model number is in the Files section of this site.
Jack, W8TEE
On Sunday, February 23, 2025 at 11:20:41 PM EST, Ron VE8RT <ve8rt@... <mailto:ve8rt@...> > wrote:
I was furtunate enough to received from Ron AG1P a T41 kit back in
December of 2023. The plan to get to it in early 2024 didn't work out,
I've just this last week gone through the box and have a good start on
the book.
Before I dive into building it are there modifications or other that
I should do right away? The 5 inch display and other not included in
the box I should get on order ASAP. Retirement should have happened in
2020, hopefully this later this year.
Ron VE8RT
--
Ron VE8RT <ve8rt@... <mailto:ve8rt@...> >
-- Ron VE8RT <ve8rt@... <mailto:ve8rt@...> >
--
Ron VE8RT <ve8rt@... <mailto:ve8rt@...> >
--
Jack, W8TEE
-- Ron VE8RT <ve8rt@...>
|
jjpurdum
K9HZ