Re: New T41 Site Available

#33984

This is excellent.  Thanks, Al!

              - Jerry, KF6VB

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On 2025-05-22 06:56, Albert Peter via groups.io wrote:
Hi Everyone,
I have created, with Jack's help, a new site all about the T41-EP at:

This is an 'information and background site" for the T41, not an open
forum - the SCHR (this site) is the place for posting
comments/suggestions about the T41.
I intend to post lots of photos of user-built T41 rigs. I have a few
already included, but would like more. If I get enough, I will create
a separate gallery page of just T41 builds.
Photos should be sent to me directly at albertfpeter@... with a
brief explanation. I reserve the right to edit any comments for
brevity.
Let me know what you think.
Regards,
Al Peter
AC8GY
Links:
------
[1] /g/SoftwareControlledHamRadio/message/33981
[2] /mt/113247324/243852
[3] /g/SoftwareControlledHamRadio/post
[4] /g/SoftwareControlledHamRadio/editsub/243852
[5]
/g/SoftwareControlledHamRadio/leave/10484476/243852/1943518115/xyzzy

Re: Digital Mod FT8

#33983

Yes, the code is available on my for v11 though.? I'm slowly modifying it for the v12 hardware changes.? Note that this can't be dropped into the official v11 code.? I needed to find a lot of memory savings to get this to work.

Re: T41 Hilbert Filter Design

#33982

My software () is for v11.? I did send Al a little blurb about my build.? I'm currently building the v12 and slowly modifying my software for the hardware changes.? It will be a while before it's ready to put up on GitHub, but if folks are interested, I could put up the work in progress.? I'm currently working on refining the calibration routines.

New T41 Site Available

#33981

Hi Everyone,

I have created, with Jack's help, a new site all about the T41-EP at:

?

This is an 'information and background site" for the T41, not an open forum - the SCHR (this site) is the place for posting comments/suggestions about the T41.

?

I intend to post lots of photos of user-built T41 rigs. I have a few already included, but would like more. If I get enough, I will create a separate gallery page of just T41 builds.

Photos should be sent to me directly at albertfpeter@... with a brief explanation. I reserve the right to edit any comments for brevity.

Let me know what you think.

Regards,

Al Peter

AC8GY

?

Re: T41 Books for sale - signed copies Latest version

#33980

OK,

Will do.

Al

Re: Digital Mod FT8

#33979

Very nice! Have you made the code available to the group?

Jack, W8TEE

On Thursday, May 22, 2025 at 04:13:24 AM EDT, Terrance Robertson, KN6ZDE via groups.io <tmrob4@...> wrote:

It can but it takes up a lot of memory.? Here's mine decoding.?

?

--
Jack, W8TEE

T41 from AI6YM

#33978

Hi everyone.?

We have a radio club where I work.? Last year we purchased a T41 kit from AI6YM.? I understand it have v50.2 firmware on it.? When trying to follow the Receive IQ calibration, from the latest T41 book (updated for v12 boards), we noticed that the menu is missing some functions and the display is messed up.? Is the book written for v66.9 firmware?? ?Here is what the display looks like.? Thanks ,

Duane? - K5CA

Re: T41 Books for sale - signed copies Latest version

#33977

Bill and Al

Thanks very much for the replies.

I'll get it from , though I see they're still listing the old edition as well

as the new one. Luckily I was signed up to this group when all the discussions about

the version were taking place so I know which one to order.

Al

Thanks for the offer to scan it. A simple "to Keith, G0GNL. I hope you enjoy it" would

be nice.

Jerry

I don't know about "Pirate Ship" but at those rates the Starship Enterprise at warp speed

seems reasonable.

Regards and thanks again

? Keith, G0GNL

Re: Digital Mod FT8

#33976

I've noticed that my radio sets its time automatically after a few minutes if I have the USB cable plugged in. I have not yet found the code that makes this happen, but I'll get there eventually.

On Thursday, May 22nd, 2025 at 3:25 AM, WF.Fiebig@... <WF.Fiebig@...> wrote:

Show quoted text

Could the FT8 mode also be integrated into the T41?

It would also be nice if there was a way to set the time.

Best regards,

Wolfgang

Re: Help: Audio is pumping on bands 17 and 15.

#33975

Oliver, morning.

?

Yes, that has fixed the audio pumping. Thanks.

?

Roger G8JWT

Re: Digital Mod FT8

#33974

It can but it takes up a lot of memory.? Here's mine decoding.?

?

Digital Mod FT8

#33973

Could the FT8 mode also be integrated into the T41?

It would also be nice if there was a way to set the time.

Best regards,

Wolfgang

Re: Help: Audio is pumping on bands 17 and 15.

#33972

Yes, that was my mistake. I removed the shutdown routine.

The pumping is gone.

// Uncomment the line below if your mainboard is populated with /

// the ATTiny shutdown routine activation hardware

//#define MAIN_BOARD_ATTINY_SHUTDOWN

?

Regards,

Wolfgang

Re: T41 Books for sale - signed copies Latest version

#33971

NA that was "cheapest rate" ship.  I cannot for the life of me why shipping
went thru the roof recently.  There is no reason for it unless the carriers
just don't want the harder business/ want to stick to the easy gravy
stuff... like delivering packages for Amazon.


Dr. William J. Schmidt - K9HZ J62K(J68HZ) 8P6HK ZF2HZ PJ4/K9HZ VP5/K9HZ
PJ2/K9HZ VP2EHZ

Owner - Operator
Big Signal Ranch – K9ZC
Staunton, Illinois

Owner – Operator
Villa Grand Piton – 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:? bill@...

Show quoted text

-----Original Message-----
From: jerry <jerry@...> 
Sent: Wednesday, May 21, 2025 10:17 AM
To: [email protected]
Cc: K9HZ <bill@...>
Subject: Re: [SoftwareControlledHamRadio] T41 Books for sale - signed copies
Latest version

On 2025-05-20 23:09, K9HZ wrote:
I just shipped a small UPS box to the UK and it was $58.*** Was that through Pirate Ship?

                 - Jerry, KF6VB

Re: Help: Audio is pumping on bands 17 and 15.

#33970

Well, I think 3 seconds is ok... keeps you from pressing the button twice accidently and having the radio come right back on...  You could probably cut it to 1 second though...


Dr. William J. Schmidt - K9HZ J62K(J68HZ) 8P6HK ZF2HZ PJ4/K9HZ VP5/K9HZ PJ2/K9HZ VP2EHZ

Owner - Operator
Big Signal Ranch – K9ZC
Staunton, Illinois

Owner – Operator
Villa Grand Piton – 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:  bill@...

Show quoted text

-----Original Message-----
From: [email protected] <[email protected]> On Behalf Of Oliver KI3P via groups.io
Sent: Tuesday, May 20, 2025 5:30 PM
To: [email protected]
Cc: Oliver KI3P via groups.io <oliver@...>
Subject: Re: [SoftwareControlledHamRadio] Help: Audio is pumping on bands 17 and 15.

Yeah, that's probably an unnecessarily long wait. The ATTiny85 code has a couple of delays that result in the long wait. It can easily be shortened by changing these two lines:

On Tuesday, May 20th, 2025 at 6:24 PM, jerry-KF6VB <jerry@...> wrote:

On 2025-05-20 13:09, Oliver KI3P via groups.io wrote:

Do you know what else that sounds like? The audio artifact you get 
after you press the On/Off button and are waiting for the ATTiny to 
turn the power off.*** That has always mystified me. The way it's supposed to work is:
You press the power button. The AtTiny tells the Teensy - "It's time 
to shut down".
The Teensy quickly cleans up and tells the atTiny - "OK to shut down 
now", and the atTiny turns off the juice.

So the Teensy doesn't "wait" for the atTiny - it's the atTiny waiting 
for the Teensy.

It should reasonably happen in one swing of the main loop.

- Jerry, KF6VB

Re: Help: Audio is pumping on bands 17 and 15.

#33969

Correct... but NOT if the ATTINY is missing but the config thinks it is!!!


Dr. William J. Schmidt - K9HZ J62K(J68HZ) 8P6HK ZF2HZ PJ4/K9HZ VP5/K9HZ
PJ2/K9HZ VP2EHZ

Owner - Operator
Big Signal Ranch – K9ZC
Staunton, Illinois

Owner – Operator
Villa Grand Piton – 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:? bill@...

Show quoted text

-----Original Message-----
From: [email protected]
<[email protected]> On Behalf Of jerry-KF6VB
Sent: Tuesday, May 20, 2025 5:25 PM
To: [email protected]
Cc: Oliver KI3P via groups.io <oliver@...>
Subject: Re: [SoftwareControlledHamRadio] Help: Audio is pumping on bands 17
and 15.

On 2025-05-20 13:09, Oliver KI3P via groups.io wrote:
Do you know what else that sounds like? The audio artifact you get 
after you press the On/Off button and are waiting for the ATTiny to 
turn the power off.
*** That has always mystified me.  The way it's *supposed* to work is:
You press the power button.  The AtTiny tells the Teensy - "It's time to
shut down".
The Teensy quickly cleans up and tells the atTiny - "OK to shut down now",
and the atTiny turns off the juice.

So the Teensy doesn't "wait" for the atTiny - it's the atTiny waiting for
the Teensy.

It should reasonably happen in one swing of the main loop.

               - Jerry, KF6VB

Re: LPF question

#33968

开云体育

If you will eventually use the 100W PA… yes you want 200V caps!

?

Here is a simpleton approach (there is way more to this, but just for reason):? P=IE, E=IR, so P=E^2/R … so E = SQRT (P * R)… if the impedance were a perfect match in the circuits (it won’t be), E = SQRT (100 * 50 = 5000) = 70.7V average… and peak is twice that so almost 150VAC!? 100V Caps won’t work!

?

Dr. William J. Schmidt - K9HZ J62K(J68HZ) 8P6HK ZF2HZ PJ4/K9HZ VP5/K9HZ PJ2/K9HZ VP2EHZ

?

Owner - Operator

Big Signal Ranch – K9ZC

Staunton, Illinois

?

Owner – Operator

Villa Grand Piton – 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@...

?

Show quoted text

From: [email protected] <[email protected]> On Behalf Of Robert Luken W3RDL via groups.io
Sent: Tuesday, May 20, 2025 11:44 AM
To: [email protected]
Subject: [SoftwareControlledHamRadio] LPF question

?

The BOM for the LPF Filter board lists all of the caps as 200V but the schematic shows 100V. The 200V and higher caps are almost non existent on Mouser or DigiKey and the few values there are $1.00+ each. Are 100V parts acceptable for 100W?

--

73

Bob W3RDL

?

Virus-free.

Re: T41 Hilbert Filter Design

#33967

开云体育

Hey Terrance… you put together a really special variation of the T41 V12… the Beacon receiver… and the remote screen.? Make sure Al gets those into his pages too!

?

Dr. William J. Schmidt - K9HZ J62K(J68HZ) 8P6HK ZF2HZ PJ4/K9HZ VP5/K9HZ PJ2/K9HZ VP2EHZ

?

Owner - Operator

Big Signal Ranch – K9ZC

Staunton, Illinois

?

Owner – Operator

Villa Grand Piton – 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@...

?

Show quoted text

From: [email protected] <[email protected]> On Behalf Of Terrance Robertson, KN6ZDE via groups.io
Sent: Tuesday, May 20, 2025 11:32 AM
To: [email protected]
Subject: [SoftwareControlledHamRadio] T41 Hilbert Filter Design

?

Al

?

I noticed that the Hilbert filter coefficients in v66-9 don't exhibit the same structure as in v50 where the negative 45 phase shift coefficients are just the reverse order of the positive 45 phase shift coefficients.? Can you provide the Hilbert filter design files for v66-9 and v50.??

?

Thanks Terrance

Re: JLCPCB Price Increase

#33966

It’s great Glenn. No complaints here at all in VK land.

?

Regards
Phil VK2KKZ

Re: Help: Audio is pumping on bands 17 and 15.

#33965

I've pushed a bug fix to the Ver66-9 github repo to get rid of the audio artifact on shutdown. Does this fix your problem when you enable MAIN_BOARD_ATTINY_SHUTDOWN?

On Wednesday, May 21st, 2025 at 6:28 AM, bty84827531 via groups.io <roger.trett@...> wrote:

Show quoted text

Thanks Oliver.

?

My rig does have the ATTiny in place and it is programmed.