Re: V12 compiling error

#32741

Bill?

I got some BPF in place and I indeed have audio in headphones, volume at max.?

Slow pulsing I had is gone.?

So the RX path is working FB.

I still get some random freeze ups but at least all is working.

With out BPF there may have been some overload.

Tim W4YN

Re: Rob Sherwood Presentation Slides on Amateur Radio Transceiver Performance

#32740

开云体育

Oh yeah… now I remember… it’s the reason I have a large building full of Standard AM/FM broadcast transmitters.

?

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 Dave Mueller AA3EE via groups.io
Sent: Wednesday, February 12, 2025 3:02 PM
To: [email protected]
Subject: Re: [SoftwareControlledHamRadio] Rob Sherwood Presentation Slides on Amateur Radio Transceiver Performance

?

ATSC uses 8VSB modulation.

?

Re: Rob Sherwood Presentation Slides on Amateur Radio Transceiver Performance

#32739

ATSC uses 8VSB modulation.

?

Re: Excessive Noise

#32738

Hey yall'

I think I found a player in the noise problem (maybe one of several!).? I had a very marginal power return connection that I corrected, not sure how this thing even worked with this problem.? Noise problem better but I have this pulsating audio problem that varies by band.? I'm running V12, Ver50.2, Debug off, TXCO, 528MHz, Faster with LTO.? 20M is the worst. I get the same problem going thru an audio amp or directly to MAIN with headphones.? I've tried different Teensy frequencies and all the LTO options to no avail.? I've looked thru the pulsating audio thread but they seemed to apply to older SW versions, maybe even V11 HW.

Thoughts?

Thanks

Mark

KU3O

Re: Rob Sherwood Presentation Slides on Amateur Radio Transceiver Performance

#32737

开云体育

Must have been an FM system?? That process would not work very well for SSB…

?

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 Dave Mueller AA3EE via groups.io
Sent: Wednesday, February 12, 2025 10:03 AM
To: [email protected]
Subject: Re: [SoftwareControlledHamRadio] Rob Sherwood Presentation Slides on Amateur Radio Transceiver Performance

?

The system I worked on (ATSC) wasn't real time/continuous. The system took a snapshot of the RF, calculated then applied the corrections, then stopped. It could be set to run every X minutes, but typically after everything reached operating temperatures, there was little improvement. It used two samples, one before and one after the final PA system. Linear correction was for gain variations and group delay caused by the extremely sharp filter edges, non-linear was for distortion.

A third party modulator we used for DVB had the corrections done manually by dragging points around on a graph via a laptop then sending the data to the modulator. Not as fun as pushing a button when you're working on a rooftop!

Re: Testing Band Pass Filter Board

#32736

开云体育

That test software just tests to determine if the hardware is there and functioning… not for receiving and transmitting signals…

?

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, February 12, 2025 9:07 AM
To: [email protected]
Subject: [SoftwareControlledHamRadio] Testing Band Pass Filter Board

?

I see the sketch for testing board.

I assume you load this into Teensy and plug BPF board into Boards Header??

Not sure how I tell Teensy which band to activate.

I am thinking? alternate maybe just use regular STD and select band might accomplish same thing?

Tim?

Re: Rob Sherwood Presentation Slides on Amateur Radio Transceiver Performance

#32735

The system I worked on (ATSC) wasn't real time/continuous. The system took a snapshot of the RF, calculated then applied the corrections, then stopped. It could be set to run every X minutes, but typically after everything reached operating temperatures, there was little improvement. It used two samples, one before and one after the final PA system. Linear correction was for gain variations and group delay caused by the extremely sharp filter edges, non-linear was for distortion.

A third party modulator we used for DVB had the corrections done manually by dragging points around on a graph via a laptop then sending the data to the modulator. Not as fun as pushing a button when you're working on a rooftop!

Testing Band Pass Filter Board

#32734

I see the sketch for testing board.

I assume you load this into Teensy and plug BPF board into Boards Header??

Not sure how I tell Teensy which band to activate.

I am thinking? alternate maybe just use regular STD and select band might accomplish same thing?

Tim?

Right-Left Rule Examples:

#32733

I presented the Right-Left Rule in the C Programming Guide book (1982) and there have been lots of examples written since then. This is a list of example you might use to test your understanding of the Rule, including some illegal data definitions:

Here are some legal and illegal examples:

Jack, W8TEE

int i; // an int

int *p; // an int pointer (ptr to an int)

int a[]; // an array of ints

int f(); // a function returning an int

int **pp; // a pointer to an int pointer (ptr to a ptr to an int)

int (*pa)[]; // a pointer to an array of ints

int (*pf)(); // a pointer to a function returning an int

int *ap[]; // an array of int pointers (array of ptrs to ints)

int aa[][]; // an array of arrays of ints

int af[](); // an array of functions returning an int (ILLEGAL)

int *fp(); // a function returning an int pointer

int fa()[]; // a function returning an array of ints (ILLEGAL)

int ff()(); // a function returning a function returning an int (ILLEGAL)

int ***ppp; // a pointer to a pointer to an int pointer

int (**ppa)[]; // a pointer to a pointer to an array of ints

int (**ppf)(); // a pointer to a pointer to a function returning an int

int *(*pap)[]; // a pointer to an array of int pointers

int (*paa)[][]; // a pointer to an array of arrays of ints

int (*paf)[](); // a pointer to a an array of functions returning an int (ILLEGAL)

int *(*pfp)(); // a pointer to a function returning an int pointer

int (*pfa)()[]; // a pointer to a function returning an array of ints (ILLEGAL)

int (*pff)()(); // a pointer to a function returning a function returning an int (ILLEGAL)

int **app[]; // an array of pointers to int pointers

int (*apa[])[]; // an array of pointers to arrays of ints

int (*apf[])(); // an array of pointers to functions returning an int

int *aap[][]; // an array of arrays of int pointers

int aaa[][][]; // an array of arrays of arrays of ints

int aaf[][](); // an array of arrays of functions returning an int (ILLEGAL)

int *afp[](); // an array of functions returning int pointers (ILLEGAL)

int afa[]()[]; // an array of functions returning an array of ints (ILLEGAL)

int aff[]()(); // an array of functions returning functions returning an int (ILLEGAL)

int **fpp(); // a function returning a pointer to an int pointer

int (*fpa())[]; // a function returning a pointer to an array of ints

int (*fpf())(); // a function returning a pointer to a function returning an int

int *fap()[]; // a function returning an array of int pointers (ILLEGAL)

int faa()[][]; // a function returning an array of arrays of ints (ILLEGAL)

int faf()[](); // a function returning an array of functions returning an int (ILLEGAL)

int *ffp()(); // a function returning a function returning an int pointer (ILLEGAL)

--
Jack, W8TEE

Re: V12 compiling error

#32732

On 2025-02-11 10:01, K9HZ wrote:
No problem… if you have amplified speakers or a stereo amp
(audiophile or music)… I encourage you to use it.
*** This reminds me of a project I've got on the back-burner.  I got an
amp that should be relatively decent.  And a Boston Acoustics speaker
mounted on the wall.

  Four HF rigs on the desk.  I switch the antenna with a manual switch.

  I'd like to build a gadget to switch both the antenna and the speaker & amp
to the desired HF rig.  I've got a little card for switching antennas - with
four beefy relays.  Bought it from an Eastern European vendor on Ebay.

                             - Jerry, KF6VB

Re: V12 compiling error

#32731

开云体育

No problem… if you have amplified speakers or a stereo amp (audiophile or music)… I encourage you to use it.

?

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: Tuesday, February 11, 2025 11:53 AM
To: [email protected]
Subject: Re: [SoftwareControlledHamRadio] V12 compiling error

?

THX Dr. Bill

I was using headphones, only hear some clicking regular spaced noise, very suspicious Hi.

Tim?

?

Re: V12 compiling error

#32730

THX Dr. Bill

I was using headphones, only hear some clicking regular spaced noise, very suspicious Hi.

Tim?

?

Re: V12 compiling error

#32729

开云体育

Just so you are not misled here… the audio out from the main board needs to go to an external audio amp to hear stuff from a speaker.? The output from the audio jack J14 (from the PCM5102) is about 2V maximum…? That may drive some high impedance headphones but not a speaker!

?

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: Tuesday, February 11, 2025 10:35 AM
To: [email protected]
Subject: Re: [SoftwareControlledHamRadio] V12 compiling error

?

I think audio is hardware I will check Daudio out on Tweensy to see if signal is there, if so then it is U5.

I reloaded Jack's beta and it has working S meter and I see signal in filter window.

I can try reloading yours later.?

I loaded it using Tweensy Loader, could not quite figure out how do from Arduino IDE, as Dr. Bill says it may not be obvious.

You guys are great , last real programming I did was in 90's !?

The Arduino IDE keeps getting better I remember the days before the Library manager, much easier especially loading zip file from gethub!

Tim?

Re: V12 compiling error

#32728

I believe water fall was working in Jerry's just no signal in Filter Window

Jack's beta both water fall and filter window is working FB.?

?

I have noticed that on startup the signal strength is initially low and builds to reasonable level in a few seconds or so.

Might be AGC related.

?

Tim?

Re: V12 compiling error

#32727

开云体育

But does the waterfall work?

?

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: Tuesday, February 11, 2025 10:16 AM
To: [email protected]
Subject: Re: [SoftwareControlledHamRadio] V12 compiling error

?

In Jacks Beta the S meter was working, this version the S meter is not , don't see a signal in filter window either.

Tim?

?

Re: Initial RX calibration not working

#32726

I the next release it will be easy and intuitive instructions are on cal screen, easy peasy.

Tim?

Re: V12 compiling error

#32725

I think audio is hardware I will check Daudio out on Tweensy to see if signal is there, if so then it is U5.

I reloaded Jack's beta and it has working S meter and I see signal in filter window.

I can try reloading yours later.?

I loaded it using Tweensy Loader, could not quite figure out how do from Arduino IDE, as Dr. Bill says it may not be obvious.

You guys are great , last real programming I did was in 90's !?

The Arduino IDE keeps getting better I remember the days before the Library manager, much easier especially loading zip file from gethub!

Tim?

Re: V12 compiling error

#32724

Interesting.  I've got that software running on my V12 - working S meter
and also audio out.

                   - Jerry, KF6VB

Show quoted text

On 2025-02-11 08:16, Tim via groups.io wrote:
In Jacks Beta the S meter was working, this version the S meter is not
, don't see a signal in filter window either.
Tim
Links:
------
[1] /g/SoftwareControlledHamRadio/message/32722
[2] /mt/111092895/243852
[3] /g/SoftwareControlledHamRadio/post
[4] /g/SoftwareControlledHamRadio/editsub/243852
[5]
/g/SoftwareControlledHamRadio/leave/10484476/243852/1943518115/xyzzy

Re: V12 compiling error

#32723

I have my T41 in pieces right now as I'm putting in a new LPF board and will be moving it to a new case. It will be tomorrow or the next day before I can check this.

Jack, W8TEE

On Tuesday, February 11, 2025 at 11:16:20 AM EST, Tim via groups.io <w4yn@...> wrote:

In Jacks Beta the S meter was working, this version the S meter is not , don't see a signal in filter window either.

Tim?

?

--
Jack, W8TEE

Re: V12 compiling error

#32722

In Jacks Beta the S meter was working, this version the S meter is not , don't see a signal in filter window either.

Tim?

?