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Re: introduction
开云体育Hi David!? Welcome aboard!?? I shipped your boards today so you can get started in about 3 days! ? ? 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 David Dill via groups.io
Sent: Monday, April 14, 2025 1:49 PM To: [email protected] Subject: [AmateurRadioBuilders] introduction ? Hi everyone. ? Just getting started with this amazing group and I wanted to write a quick note of introduction. I have long been a kit builder and tinkerer with electronics.? My first real success was a Wilderness Sierra that I built back in 1996.? I've been hooked ever since.? For the past year or so I have been running a Hermes Lite with Thetis and have been totally amazed by what it can do. ? I have absolutely no formal electronics knowledge and have always just figured stuff out at my own pace.? I am really looking forward to building the T41 modules, learning about SDTs and getting to know the folks in this community. ? I live in Colorado Springs, Colorado.? If there is anyone near me that is a part of this group and would be interested in gathering for a meet up to talk shop and compare notes, let me know by emailing me directly, off the forum. ? Thanks to everyone who makes this amazing learning opportunity and community possible. ? 73 David Dill W0NP |
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Re: Attenuator problem
开云体育Good question… the TX attenuator should work the same way… so either there is a bug in the software… or there is a problem with the MCP23017.?? Since the RX side works I think its probably a bug in the code.? Oliver will know. ? ? 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 Tom - AJ8X via groups.io
Sent: Monday, April 14, 2025 1:14 PM To: [email protected] Subject: [AmateurRadioBuilders] Attenuator problem ? V12.6 RF board. 'Menu/RF Set/RF in Atten' works fine, I get the appropriate 3.3v at pins 21 - 26 as adjustments are made. But 'RF Out Atten' doesn't work the same. I don't see any voltage on pins 1 - 6 as adjustments are made. What am I missing? |
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Re: [SoftwareControlledHamRadio] T41 V12 software development path forward
The book has that and I believe that the web site also has instructions on installing the Arduino IDE, the TeensyDuino, and the necessary libraries. Jack, W8TEE
On Sunday, April 13, 2025 at 06:28:04 PM EDT, jerry-KF6VB <jerry@...> wrote:
On 2025-04-13 15:09, David Fine wrote: Oliver et al,It wouldn't take much to make the software "standalone". That is - being able to distribute it as a binary/hex file instead of making everybody compile the source. I believe that all that would be needed would be to make the callsign, ITU region, and grid square into EEPROM data. Let people enter it at the radio. - Jerry, KF6VB -- Jack, W8TEE |
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Re: Latest FW Update
开云体育At some point I will redo all the headers and pins again with new Tweeny and Hat. ? The last one I built I dispensed with the sockets and just soldered it all to the pins and the main board.? As long as I don’t “screw up” and short something out, I guess I’m ok… ? ? 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: Sunday, April 13, 2025 7:48 AM To: [email protected] Subject: Re: [AmateurRadioBuilders] Latest FW Update ? I went thru that, changed all the headers and pins to US made and , new Tweeny and Audio Hat, it was golden until yesterdays upgrade. I must have tweaked something pressing the reset button. The pins on expansion board must be off alignment just enough to cause issues. There is a lot of pins and headers that have to align perfectly. I wish they had brought the rest out to a pad where we could add an external PB. All good for now. At some point I will redo all the headers and pins again with new Tweeny and Hat. Tim? ? |
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Re: T41-EP V12 Board Connections and Development of the VHF-UHF Board
开云体育I can give you some insight for how the VHF-UHF module works.? It’s a complete module except for the I/Q decode and code.? It has its own antenna connections,? Connects to the control cable… has connections for the I/Q in and out (as one of the RF Boards)… Meaning it is a true SDT by itself less the I/Q Code/Decode and control that is provided by the MAIN board. ? ? 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 J P Watters via groups.io
Sent: Sunday, April 13, 2025 12:17 PM To: [email protected] Subject: [AmateurRadioBuilders] T41-EP V12 Board Connections and Development of the VHF-UHF Board ? Dr. Bill and Oliver, ? Al and Jack could not have found a more capable pair to take the T41-EP project over the horizion into what we will find in the infinite Experimentation Beyond. ? I have searched but have not found a board interconnection diagram that shows how the VHF/UHF board is proposed to connect.? It seems like I have run across that but I need some guidance to find it.? ? ..jpw J P Watters KC9KKO Morris, IL USA ? ? ? |
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Re: U8 test
开云体育Jerry… on the 1.8 MHZ filter… did you build it on the LPF or did you just short across 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@... ? ? From: [email protected] <[email protected]> On Behalf Of jerry-KF6VB
Sent: Sunday, April 13, 2025 1:29 PM To: [email protected] Subject: [AmateurRadioBuilders] U8 test ? Hello all, |
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Re: T41-EP V12 Board Connections and Development of the VHF-UHF Board
This shows the diagram for two receivers, but just ignore the second one and the 100W amp. Jack, W8TEE
On Sunday, April 13, 2025 at 01:17:11 PM EDT, J P Watters via groups.io <jpwatters@...> wrote:
Dr. Bill and Oliver,
?
Al and Jack could not have found a more capable pair to take the T41-EP project over the horizion into what we will find in the infinite Experimentation Beyond.
?
I have searched but have not found a board interconnection diagram that shows how the VHF/UHF board is proposed to connect.?
It seems like I have run across that but I need some guidance to find it.?
?
..jpw J P Watters
KC9KKO
Morris, IL USA
?
?
?
-- Jack, W8TEE |
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Re: [SoftwareControlledHamRadio] T41 Hardware Directions
开云体育Forgot the TDA7312…. One of my favorite 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@... ? ? From: [email protected] <[email protected]> On Behalf Of K9HZ
Sent: Sunday, April 13, 2025 2:14 PM To: [email protected]; [email protected] Subject: Re: [AmateurRadioBuilders] [SoftwareControlledHamRadio] T41 Hardware Directions ? “I have mentioned to Bill and Oliver that I would like to see a small PCB hold the 4 connectors (mic, PTT, headphones, and key) just because the current direct wiring makes the front look like a rat's nest. It's purely aesthetics for me and something most people will never see. “ ? I’ve been working on this for a while but have tied it to an overall audio system.? Here’s what I have on the list (Comments welcome): ?
?????????????????????????????????????????????? i.???? AUDIO: Mic, PTT in, Phones, ? ????????????????????????????????????????????? ii.???? Key? ??????????????????????????????????????????? iii.???? On/off
?????????????????????????????????????????????? i.???? AUDIO: Mic, Line in, Line out, speaker (internal). ????????????????????????????????????????????? ii.???? Key ??????????????????????????????????????????? iii.???? PTT IN ??????????????????????????????????????????? iv.???? KEY OUT (from LPF) ???????????????????????????????????????????? v.???? ACC Connector (BAND0-BAND3 from LPF Inverted). ??????????????????????????????????????????? vi.???? USB2 ?????????????????????????????????????????? vii.???? RS232 ? This is all sitting in a box here waiting to proto it up and try. ? ? ? 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 Jack, W8TEE via groups.io ? All: Obviously I agree since I suggested to Al that Bill take the hardware over, to which he was in total agreement. Same for Oliver on the software track: both were done in consultation. In the future, I, too, would like to remove the Audio Hat and move it to the Main board. I would like to see the ADC/DAC's mounted over a small hole in the PCB, since mounting those has been troublesome in the past. Placing the SPI driver on the board makes sense. I don't know enough about the LT3045's to judge, but while they are relatively expensive (~$9), a quantity 10 purchase, however, drops the price by almost 25%, so some kind of sharing might be possible. The ones I saw are rated at 500mA, so I'm guessing more than one is needed but I don't know. I think most of us would plunk down an extra $20 if it results in a more quiet rig. I have mentioned to Bill and Oliver that I would like to see a small PCB hold the 4 connectors (mic, PTT, headphones, and key) just because the current direct wiring makes the front look like a rat's nest. It's purely aesthetics for me and something most people will never see. ? On the software side, I would love to take the time to cut down the globals in the code. It will make some things a little slower (noticeable??), but it would address Greg's complaint about the limited stack/heap space. My guess is that it would also make debugging easier, too. It would be super cool if the Arduino people noticed that the newer processors now have some serious code space with significantly faster clocks and that might permit a mini OS kernel that would support a symbolic debugger. Alas, that's probably not going to happen until the Arduino family get a significant boost in memory. ? Anyway, I think Bill and Oliver will take the T41 Project to even higher performance levels than it enjoys now. And a big thanks to all the members of these groups who have helped along the way! ? Jack, W8TEE ? On Sunday, April 13, 2025 at 12:18:50 PM EDT, K9HZ <bill@...> wrote: ? ? Like Oliver on the Software side, I have graciously been handed the hardware side of the T41 development moving forward. ?(Just my take with this next statement) The software side is easier to experiment with… basically because its easier to “roll it back” if the experiment fails.? To that end it requires more discussion and engineering calculation on the hardware side to make measurable steps forward. ?I do have a stable of engineers that work for me… but they are not here to work on the T41 project (unless they do it off-hours).? ?To that end, I will start permanent “hashtag” sub-groups in the AmateurRadioBuilders when there is a growing interest in any aspect of the T41 hardware to address and discuss.? ? There will be some changes to the building process tools I want to announce today.? I will begin to stock solder masks shortly… something I have not done in the past.? I originally considered stocking solder masks and “renting them out” for reuse.? But after understanding that the SHIPPING for return would cost about the same as purchasing a mask outright… I will simply sell them outright.? Then you can share them on a local/ club level. ? I’ve shipped about 50 of the display driver hardware devices.? I have about 150 more in stock and then I will restock.? Eventually, this hardware can be moved to the main board if there is an update. ? Remember, ?there is a difference between the T41 hardware and my K9HZ, and the K9HZ/KI3P hardware projects that we may or may not allow group think due to the fact that there may be external requirements that you are not aware of (e.g. the 100W PA module, the VHF/UHF Module, ETC.). ??? ? Here are a few hardware things I am thinking about for the existing T41 boards.? If we update the main board to a 12.7 at some point, I think we should consider placing the hardware from the audio hat directly on the main board.? I would also put the SPI display driver on the board… a pair of ultra-low noise references for the A/D and D/A as needed, and possibly update the linear regulators with ultra noise LT3045 (etc.) devices.? Maybe splitting the A/Ds and D/As to a separate card… off the Main board may facilitate more experimentation at that level too… making it easier to change.? All of these are small changes… but if you are an experimenter, it might be up your alley. ? ? ? ? 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@... ? ?
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Re: [SoftwareControlledHamRadio] T41 Hardware Directions
开云体育“I have mentioned to Bill and Oliver that I would like to see a small PCB hold the 4 connectors (mic, PTT, headphones, and key) just because the current direct wiring makes the front look like a rat's nest. It's purely aesthetics for me and something most people will never see. “ ? I’ve been working on this for a while but have tied it to an overall audio system.? Here’s what I have on the list (Comments welcome): ?
?????????????????????????????????????????????? i.???? AUDIO: Mic, PTT in, Phones, ? ????????????????????????????????????????????? ii.???? Key? ??????????????????????????????????????????? iii.???? On/off
?????????????????????????????????????????????? i.???? AUDIO: Mic, Line in, Line out, speaker (internal). ????????????????????????????????????????????? ii.???? Key ??????????????????????????????????????????? iii.???? PTT IN ??????????????????????????????????????????? iv.???? KEY OUT (from LPF) ???????????????????????????????????????????? v.???? ACC Connector (BAND0-BAND3 from LPF Inverted). ??????????????????????????????????????????? vi.???? USB2 ?????????????????????????????????????????? vii.???? RS232 ? This is all sitting in a box here waiting to proto it up and try. ? ? ? 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 Jack, W8TEE via groups.io
Sent: Sunday, April 13, 2025 11:58 AM To: [email protected]; AmateurRadioBuilders <[email protected]> Subject: Re: [AmateurRadioBuilders] [SoftwareControlledHamRadio] T41 Hardware Directions ? All: Obviously I agree since I suggested to Al that Bill take the hardware over, to which he was in total agreement. Same for Oliver on the software track: both were done in consultation. In the future, I, too, would like to remove the Audio Hat and move it to the Main board. I would like to see the ADC/DAC's mounted over a small hole in the PCB, since mounting those has been troublesome in the past. Placing the SPI driver on the board makes sense. I don't know enough about the LT3045's to judge, but while they are relatively expensive (~$9), a quantity 10 purchase, however, drops the price by almost 25%, so some kind of sharing might be possible. The ones I saw are rated at 500mA, so I'm guessing more than one is needed but I don't know. I think most of us would plunk down an extra $20 if it results in a more quiet rig. I have mentioned to Bill and Oliver that I would like to see a small PCB hold the 4 connectors (mic, PTT, headphones, and key) just because the current direct wiring makes the front look like a rat's nest. It's purely aesthetics for me and something most people will never see. ? On the software side, I would love to take the time to cut down the globals in the code. It will make some things a little slower (noticeable??), but it would address Greg's complaint about the limited stack/heap space. My guess is that it would also make debugging easier, too. It would be super cool if the Arduino people noticed that the newer processors now have some serious code space with significantly faster clocks and that might permit a mini OS kernel that would support a symbolic debugger. Alas, that's probably not going to happen until the Arduino family get a significant boost in memory. ? Anyway, I think Bill and Oliver will take the T41 Project to even higher performance levels than it enjoys now. And a big thanks to all the members of these groups who have helped along the way! ? Jack, W8TEE ? On Sunday, April 13, 2025 at 12:18:50 PM EDT, K9HZ <bill@...> wrote: ? ? Like Oliver on the Software side, I have graciously been handed the hardware side of the T41 development moving forward. ?(Just my take with this next statement) The software side is easier to experiment with… basically because its easier to “roll it back” if the experiment fails.? To that end it requires more discussion and engineering calculation on the hardware side to make measurable steps forward. ?I do have a stable of engineers that work for me… but they are not here to work on the T41 project (unless they do it off-hours).? ?To that end, I will start permanent “hashtag” sub-groups in the AmateurRadioBuilders when there is a growing interest in any aspect of the T41 hardware to address and discuss.? ? There will be some changes to the building process tools I want to announce today.? I will begin to stock solder masks shortly… something I have not done in the past.? I originally considered stocking solder masks and “renting them out” for reuse.? But after understanding that the SHIPPING for return would cost about the same as purchasing a mask outright… I will simply sell them outright.? Then you can share them on a local/ club level. ? I’ve shipped about 50 of the display driver hardware devices.? I have about 150 more in stock and then I will restock.? Eventually, this hardware can be moved to the main board if there is an update. ? Remember, ?there is a difference between the T41 hardware and my K9HZ, and the K9HZ/KI3P hardware projects that we may or may not allow group think due to the fact that there may be external requirements that you are not aware of (e.g. the 100W PA module, the VHF/UHF Module, ETC.). ??? ? Here are a few hardware things I am thinking about for the existing T41 boards.? If we update the main board to a 12.7 at some point, I think we should consider placing the hardware from the audio hat directly on the main board.? I would also put the SPI display driver on the board… a pair of ultra-low noise references for the A/D and D/A as needed, and possibly update the linear regulators with ultra noise LT3045 (etc.) devices.? Maybe splitting the A/Ds and D/As to a separate card… off the Main board may facilitate more experimentation at that level too… making it easier to change.? All of these are small changes… but if you are an experimenter, it might be up your alley. ? ? ? ? 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@... ? ?
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K9HZ
Tom - AJ8X
Jack, W8TEE