New book

ALL:

Has anyone received a copy of the new T41 book? The new version supposedly became available after April 4th and has a black T41 on the cover and Appendix C on Calibration has been expanded to a new chapter (#20). If so, please let me know, as I have ordered review copies for Al and myself twice now, and they have sent the old pre-April 4th version.

Thanks!

Jack, W8TEE

--
Jack, W8TEE

Re: No SSB output

#33554

Display is not showing anything.

will dig deeper.

TNX

Tim

?

Tim O'Rourke

W4YN@...

Low Power Amateur Radio Rocks

Member of Flying Pigs,ARCI,GQRP,RSGB,ARRL Life Member

R/C Pilot (sort of)

NRA Life Member

NRA Certified Rifle, Pistol, Black Powder Instructor, Range Officer

Show quoted text

-----Original Message-----
From: <[email protected]>
Sent: Apr 16, 2025 12:13 PM
To: <[email protected]>
Subject: Re: [SoftwareControlledHamRadio] No SSB output

?

If you take the Mic wires off the pins on the hat and just place your finger on Hat PIN 4 and key the radio, you will see a 60 cycle pattern in the display and hear that in the transmitted signal.? If not, there is something up with either the firmware, a selection in the menu (try a different EQ), or the hat itself.

?

Dr. William J. Schmidt - K9HZ 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@...

?

From: [email protected] <[email protected]> On Behalf Of Tim via groups.io
Sent: Wednesday, April 16, 2025 11:08 AM
To: [email protected]
Subject: Re: [SoftwareControlledHamRadio] No SSB output

?

No sir

?

Re: No SSB output

#33553

开云体育

If you take the Mic wires off the pins on the hat and just place your finger on Hat PIN 4 and key the radio, you will see a 60 cycle pattern in the display and hear that in the transmitted signal.? If not, there is something up with either the firmware, a selection in the menu (try a different EQ), or the hat itself.

?

Dr. William J. Schmidt - K9HZ 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 Tim via groups.io
Sent: Wednesday, April 16, 2025 11:08 AM
To: [email protected]
Subject: Re: [SoftwareControlledHamRadio] No SSB output

?

No sir

?

Re: No SSB output

#33552

No sir

?

Re: The T41 from 4SQRP and V11 boards.

#33551

Thanks Bill

?

Don't worry about it.? I'll find some boards somewhere.? It's only the V10/11 QSE and maybe QSD boards that I would use.

?

Good luck with your sales.

?

73 Harry GM3RVL

Re: The T41 from 4SQRP and V11 boards.

#33550

What I believe is an "Experimental Platform" means more modules.? Smaller chunks of circuitry for specific functions.? Each module should be relatively easy to build and test compared to

a board which includes two or more major functional blocks.? This keeps it in the context of amateur radio and building stuff in the garage with limited test equipment.

?

Thus T41-2 is even more modular than the original T41.? The Main board does not include the Si5351 or the audio amplifier.? Those are pushed off to external modules.

The ADC and DAC modules are retained, rather than built into the board as in V12.? This gives the flexibility of swapping out with future higher-performance modules.

Even the power amplifier is modular, with separate boards for the driver and final amplifier (still in development).

?

--

73 Greg KF5N

Re: No SSB output

#33549

开云体育

Do you see a modulation envelope on the screen?

?

Dr. William J. Schmidt - K9HZ 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 Tim via groups.io
Sent: Wednesday, April 16, 2025 10:08 AM
To: [email protected]
Subject: [SoftwareControlledHamRadio] No SSB output

?

I have output in CW mode, but 0 in SSB.

Even doing TX IQ with 750hz tone or 2 tone TX 0 output.

FW is the 66.9?

Tim W4YN

?

Re: The T41 from 4SQRP and V11 boards.

#33548

开云体育

Hi Harry, Thanks for the note.

?

I just checked my records and I sold a total of 218 full sets of V10/V11 boards (plus odds and ends of full sets).? But that was two plus years ago.? I may still have sets of V10/V11 bare boards in the recycle box… I’ll dig around to see if I can find some for you because the demand for the V10/V11 sets has dried up as of the V12 release.? In any case, the GERBERS for the V10 and V11 boards are all available at no cost on my GITHUB.? The 4SQRP boards (+GERBERS) are not available to me so I can’t support them as of now.

?

Beyond that, I’ve sold 1,200+ sets of V12, and 150+ in stock that I will sell at Hamvention in about a month.? Last year I sold 200 sets at FDIM and HamVention alone in just 4 days, and I expect to do that and more this year, since I now have an inside booth (4111 for those who will attend). ?I will take paper orders if I run out (I expect that will happen because I only have so much space in my luggage).? I will also be selling the latest T41 book (signed copies) from Jack and Al at Hamvention in my booth (NOT at FDIM where Jack and Al will be selling the book).

?

I won’t be able to support older versions of the T41 past free GERBERS and documentation.? The cost of doing so is prohibitive.? I have thousands of US dollars tied up in parts and boards… and can only support so much.? I don’t know if Greg supplies boards for your V10/V11 projects or not… I don’t really follow what he does (and hence can’t/ don’t/ won’t comment on it). ?I do see some new directions on the horizon for the T41 after V12.? The RF performance is outstanding… now to supercharge the user interfaces and the I/Q processing parts.

?

Dr. William J. Schmidt - K9HZ 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 Harry Brash via groups.io
Sent: Wednesday, April 16, 2025 1:11 AM
To: [email protected]
Subject: Re: [SoftwareControlledHamRadio] The T41 from 4SQRP and V11 boards.

?

Bill

Thanks for the long list of specs of the T41-V12.

I suppose that Andy G8HCK passed on my inquiry to him for a couple of V10/V11 QSE PCBs and you may be wondering why I’m looking for such old technology.? I’ve been using my original V10 QSE board so much for hardware development that it is starting to fall apart with all the cut traces, solder jumpers and extra mounting holes.?? Fortunately, it still works in its original form.

For my purposes, the V12 RF boards are too dense for much hardware experimentation, particularly with 4 layer boards.?? I feel that they don’t encourage the original “EP” concept that Jack and Al first promoted.? I see the V12 concept as almost a pre-production prototype for a commercial radio with very tight specs.? I really admire the way that your team are striving to make it all work and I wish you all every success.

My T41 interests now lie in the direction which Greg KF5N is taking both for hardware and software development.? Of course it is a positive sign of an on-going healthy project like the T41-EP that it can and does evolve in several directions and long may that continue !

73 Harry GM3RVL

No SSB output

#33547

I have output in CW mode, but 0 in SSB.

Even doing TX IQ with 750hz tone or 2 tone TX 0 output.

FW is the 66.9?

Tim W4YN

?

Re: The T41 from 4SQRP and V11 boards.

#33546

Bill

Thanks for the long list of specs of the T41-V12.

I suppose that Andy G8HCK passed on my inquiry to him for a couple of V10/V11 QSE PCBs and you may be wondering why I’m looking for such old technology. ?I’ve been using my original V10 QSE board so much for hardware development that it is starting to fall apart with all the cut traces, solder jumpers and extra mounting holes.?? Fortunately, it still works in its original form.

For my purposes, the V12 RF boards are too dense for much hardware experimentation, particularly with 4 layer boards.?? I feel that they don’t encourage the original “EP” concept that Jack and Al first promoted.? I see the V12 concept as almost a pre-production prototype for a commercial radio with very tight specs.? I really admire the way that your team are striving to make it all work and I wish you all every success.

My T41 interests now lie in the direction which Greg KF5N is taking both for hardware and software development.? Of course it is a positive sign of an on-going healthy project like the T41-EP that it can and does evolve in several directions and long may that continue !

73 Harry GM3RVL

Re: Trying to build a AM Demod so I can see my CW signal

#33545

Thank you,? yep I want the envelope.?? Appreciate the fast answer!!

Re: Trying to build a AM Demod so I can see my CW signal

#33544

开云体育

You don’t actually need a demodulator to see your CW signal on your scope… you just need a scope that is capable of displaying the fundamental frequency of the transmission… so any oscilloscope capable of displaying a signal up to 30(-50 )MHz will cover the entire range of the radio up to 10(-6)M inclusive.

?

You will need the demodulator if you wish to see the audio envelope of an AM signal.

?

BTW there are lots of good replacements for 1N34 (germanium) diodes… 1N270, BAT46, 1N5711, etc.? The BAT46 is bar far the closest to a substitute and is currently available from Digikey and Mouser.

?

Dr. William J. Schmidt - K9HZ 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 Kevin Welna via groups.io
Sent: Tuesday, April 15, 2025 5:50 PM
To: [email protected]
Subject: [SoftwareControlledHamRadio] Trying to build a AM Demod so I can see my CW signal

?

Noob trying to learn here:

?

It looks like I need to build a demodulater to view my CW signal with my O-Scope.?? (I found a circuit that I can build,? but it calls for 1n34A diodes.? What would be a good substitute?? I was thinking maybe a BAT46?? I'm hoping to use this on a QRP rig.

?

Any assistance will be greatly appreciated.

?

Trying to build a AM Demod so I can see my CW signal

#33543

Noob trying to learn here:

?

It looks like I need to build a demodulater to view my CW signal with my O-Scope.?? (I found a circuit that I can build,? but it calls for 1n34A diodes.? What would be a good substitute?? I was thinking maybe a BAT46?? I'm hoping to use this on a QRP rig.

?

Any assistance will be greatly appreciated.

?