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Re: t-41 V-12 now on the air
Congratulations!
By Tom - AJ8X · #33689 ·
Re: More T41 V12 Results
The amp itself (actually the first gain stage) is the limitation. That was done on purpose to make the amp bullet proof (short or open the output to the antenna and things are just fine). You CAN
By K9HZ · #33688 ·
Re: New book
You should be able to return them for a full refund. When you reorder, make sure the ad says that the book ad says it was publish on April 16, 2025. When they ask for the reason for the return, pick
By jjpurdum · #33687 ·
Re: New book
I bought two paper copies of the "Revised Edition" books from amazon.ca, is it possible to get an updated copy for free? -- 74 John VA6kHz [email protected]> wrote:
By John Zhong · #33686 ·
Re: More T41 V12 Results
What limits the current in this amplifier? Something on Bill's amp board or within the rest of the T41? -Nate N8BTR
By Nate Reik N8BTR · #33685 ·
t-41 V-12 now on the air
after reloading (TNX for bug fix Oliver) and recalibrating first Q is in log. 7 w SSB 20M unsolicited nice audio report (cheap home made mic) onward and upward! TNX to all the contributors Tim W4YN
By Tim · #33684 ·
Re: Restructuring the T41 code
No question that configuring the audio state is an important function.? I've used this method before, usually for things I didn't want to convert into a library or when linker support was deficient
By Terrance Robertson, KN6ZDE · #33683 ·
Re: Restructuring the T41 code
I'm using a different meaning of the word "special".? The code in the AudioSignal.h file is the software heart and lungs of the radio. -- 73 Greg KF5N
By Greg KF5N · #33682 ·
Re: FW 66.9 bug
Verified Bug is gone TNX Tim W4YN
By Tim · #33681 ·
Re: Restructuring the T41 code
There isn't anything particularly special about this code.? It can be placed in its own cpp file along with a header file for the global externs and function prototypes.? That's what I've done.
By Terrance Robertson, KN6ZDE · #33680 ·
Re: Restructuring the T41 code
Yep...we're on the same page. Jack, W8TEE
By jjpurdum · #33679 ·
Re: Restructuring the T41 code
Yes, Jack, you've got it!? There is some nuance when someone uses the term "global", and what I was trying to flush out was the "super globals" versus "local file globals".? When I see "extern" that
Re: Restructuring the T41 code
Mornin' Greg: Yes, Al and I found a lot of "dead" variables when we started out. We could tell by their names that some of them were clearly used as temporary debug variables that just didn't get
By jjpurdum · #33677 ·
Re: Restructuring the T41 code
Great work Terrance!? That is what I aspire to.? It's going to take a few more iterations to get T41EEE that good. I wholeheartedly agree it makes it easier to find things specific to a particular
By Greg KF5N · #33676 ·
Re: FW 66.9 bug
Found the bug -- it was a simple one-line fix in the end. Pushed to GitHub: https://github.com/KI3P/SDTVer066-9/commit/8569ee3bc37fdbb3143b00356bb0ae0507448c3a
By Oliver KI3P · #33675 ·
Re: Restructuring the T41 code
Oliver - Thanks for update.? Your diagrams are very helpful. I took this approach.? Yes, it's tedious.? I've gone pretty far with my approach.? My SDT.h is only 209 lines.? This doesn't reflect a
By Terrance Robertson, KN6ZDE · #33674 ·
Re: Restructuring the T41 code
Hi Jack- It's a metric of the reduction of global variables.? Note that the .ino file was also greatly de-cluttered in concert with SDT.h. There were also a bunch of variables which only existed in
By Greg KF5N · #33673 ·
Re: Restructuring the T41 code
Greg: Curious about the line: To get an idea of how much progress I have made, the number of lines in T41EEE.9/SDT.h = 1057.? SDTVer066-9/SDT.h = 2640. What was the impact if you add up the class
By jjpurdum · #33672 ·
Re: FW 66.9 bug
SRY My bad memory Spectrum Options Did we have option for averaging in older FW? Tim
By Tim · #33671 ·
Re: Restructuring the T41 code
Hi Oliver- One thing I recommend is writing a script to "de-globalize" the code.? I did this and removed hundreds of globals.? There were even globalized local variables! What the script does is
By Greg KF5N · #33670 ·