Adding another comment mid Video: Menu "R Shunt" is to calibrate Current measurement Shunt Resistance of PCB Trace, What you refer to as a Low Pass Filter is the Selection of the Band Module in Place (Alternative Band Modules possible). And at Minute 27:00, you use an external Tool to translate dbm into S-Meter. Easier would be so go to Menu and Change it from showing dbm into S Value or Bar, or whatever you prefer ;)
I ordered a (tr)usdx and plan on attempting to pair it with a digirig mobile. No information available for this online that I've been able to find. Any information on attempting to run digital modes?
The spkr on my KX3 is not that good either, so I always use earphones or a small capsule spkr like yours with it. But I wish they had made it compatible with some common spkr-mic.
I was specifically waiting for this video, as I had been eyeing the completed radio at the DL2MAN approved sellers! Thank you so much for all the time you put into this. It was the length of a TV show episode! Excellent! Just want to show some appreciation! Off to order the radio!
Noting that this video is now a year old, the new kits are pre-programmed, and the mic sounds much better than what you experienced. The only specialist things that you will need to build a kit is a VNA, a 3d printer and a dummy load. Everything else is optional. I feel like DL2MAN and PE1NNZ have listened to all of the comments out there and have made the necessary changes. Really impressive radio. I have 2! A premade standard kit and a classic band kit. The new beta firmware now has a frequency scope! Seriously cool. Amazing how much functionality they put into it. Thanks for the video
Hey Josh bought my first radio this weekend (baofeng uv5r+) thank you for all the effort you put into broadening horizons definitely solely responsible for the birth of this ham really loving the hobby so far even if I don't quite understand alot of it
I used a built one purchased from DL2MAN's recommended Chinese supplier on a SOTA activation today (20m and 40m SSB). Used a little plug-in USB-chargeable speaker, which was a big improvement over the internal one. I'll use ear buds next time. Looking forward to seeing some recommendations. Some of the QSOs were hard work but I didn't get complaints about my audio quality.
The truSDX is an impressive design but there are a few small issues that need resolution. Some builders notice high SWR and excessive power readings in transmit. Unfortunately the designers missed the 328P datasheet note concerning the design of ADC input circuitry. Paragraph 23.6.1 states that the ADC driving impedance should not exceed 10K to guarantee accurate readings for all 328Ps. The truSDX design lacks pull-down resistors on the FWD and RVS ADC inputs for impedance control, and thus is susceptible to pin leakage currents and ADC channel crosstalk. It's the luck of the draw whether yours is OK without pulldown resistors. Mine was not. Some members of the forums have suggested changing R5 and R6 to 1K, and C29 and C31 to about 100K or whatever high value you can get away with. This worked for me with C39 and C31 = 2.2meg. If you do this mod the RF power will read 10% to 20% low. Fixing this will need a calibration constant to be added to the firmware. Oh, by the way, the FWD and RVS signals are reversed on the Rev 1.0 Nov. 2021 board silkscreens. Yep, they fixed it in software. There also is another small issue to be fixed. The Audio output signal has a strong 80kHz component from the PWM technique used for the audio output. This may cause amplified loudspeakers to draw excessive current. Mine pulls 250mA at higher volumes. I added a small R-C filter at its input to prevent this. All in all, an impressive design and a lot of fun. Tnx and 73's, N2GX
Nice Video, I have two from the 1st UK group buy and both work great. I have had one ticking over for digital modes using FT8,FT4 and JS8Call for over two months without issue. Look for me on 40mtr or 20mtr as its surprised me how well it is working. Look forward to the next 73 Ellis M5AEI
yes - many kits require knowledge other than how not to poke your eye out with a screwdriver - more and more kits will require knowledge like the bootloader and firmware update, many would never have done this type of work before. New skill means new experiences.
Hey, just in the middle of the Video.... But didn´t want to wait with the comment till the end: One important advice (Burning Bootloader Process) is missing: When you´ve selected the fuse bits, you also gotta check the box for "burn fuses " !!! 73 Manuel; DL2MAN
Hi Josh. Enjoyed the videos. I will need your video to get my unit going again. Built mine worked first go , it had all the software pre loaded life was looking good. . Whilst 3D printing the case and fitting parts for fit to the PCBs I made the cardinal mistake of leaving the power plugged in . Those interconnecting pin headers came loose and next thing the smoke escaped from some of those multi legged fuses on the board. My heart just sunk with a lot of rude words. I found a hole in the MCU chip, the game was over. Like you I am now waiting for my re purchased unit and the other bits so I can harvest the replacement chips. So far three are confirmed kills and more casualties I guess when I have replaced the dead bits. Just a little humerus story of what can go wrong when your just toooo cocky in your abilities. I do this stuff for a living over the past 40 years. @#%$ happens. Keep up the great work on here most enjoyable. Richard. VK2VD. 73s.
I have also been waiting for this video. I have not 1 but 2 build kits from the green radio company. I should have bought it built :( I have 2 of these bricks here that need programming. I'm going to try ur video and pray...
Note AVRDUDESS is at version 2.15 as of this comment. To program the Bootloader with an Arduino UNO as the ISP programmer, use "Arduino board as programmer using arduino as ISP firmware".
I may need counseling after that intro!!! Why? Because I loved it, which means I'm as whacked as you are!!! BTW, this is a fantastic video!!! You're starting to look like a ginger Gandalf, which is not a bad thing, but independent of this, you seem to actually have Gandalf's brain, which is quite HAMish!!!
@@HamRadioCrashCourse I re-read my comment and now realize it could have been taken as being negative towards the truSDX, apologies as that was not my intent. Quite the opposite - I am excited to get one of these and experiment! I am all about QRP and minimal power draw for the transceiver - I bet that I could cover my entire state with with only 4 of these using NVIS and JS8call. And they're so small with such lower power draw, it'd be a cinch to hike one of these + batteries + solar recharger into the undoubtedly remote locations required for the minimum number of nodes to cover the state. And they're so inexpensive I could actually afford it lol.
I had a SSB QSO with a guy in Spain with one of these things. Granted he has quite the antenna setup to be pulling me out. I have had QRP to QRP QSOs from Maryland to Texas and Maryland to Florida. I haven’t setup for NVIS yet but I bet you could cover the state with one radio. I suppose that depends on the state
I'm waiting for my assembled (tr)u-sdx to arrive from China. I already have enough unassembled kits in my basement to keep me occupied for months and months.
In your previous video, you said that you didn't have the correct size barrel connector to power the radio on the top. Did you make a power cable or purchase one? Does it go to power poles or another means? Thank you Josh
Thanks for this video..great info....just got mine today. Where did you buy the power connector wires for this? I can't tell which size I need to get, and I don't see it in your description anywhere. Tnx and 73
Hello! Tell me please. I have only CW, SSB and LSB on this thing. There is no modulation of AM and FM in principle, neither from the quick switch with the "Enter" button, not in the menu item "1.2 Mode". Maybe there is some secret of menu settings or me need to change the firmware? Sincerely, 73!
There are older version of the firmware that has AM and FM modes, but with the limited capacity of the processor those modes were removed for other features in later and most recent versions. The latest version of firmware has a spectrum scope and audio over CAT making for a very simple portable radio for digital mode
Josh, I ordered one of these "cute" truSDX . I powered it up with no antenna and it howled and squealed among the switching of all bands and the display would be bright and then darken and then just shut off. I have been negociating with E-bay and they said...try this, try that to no avail. I asked them if they could send me a unit that funcions and also correct my callsign in the window which was incorrect.... They have now offered me a new mainboard to install myself which for now, I have accepted...are there any difficulties that i should know about when I receive this board or is it just a simple swap and play?? KK6LNV King Kong 6 late night visitor Marc Andrew McClure....92024 ]
To re-iterate what I commented on Patreon, I ignore anyone sending over 20 wpm when I watch the RBN, if someone replies to me faster than I'm sending I usually ignore them too it it's a big disparity.
after i purchased the default assembled version thats 80/60/40/30/20 default, can I upload the Classic option firmware (80/40/20/15/10) and make it works both Tx/Rx? 73 de 9w8haz
Firmware is easy to upload, the boot loader however is quite the process. You may want to check out the latest firmware available it adds audio over CAT control there is even a spectrum scope display now!
OMG my brain just seized up trying to understand your intro.. I'm an analog refugee and I find all your computer jargon impossible to understand. Please make some concessions for folks like me. We are pedalling as fast as we can!
Thanks for coming back. I have no software knowledge so the first 19 mins of the video were incomprehensible I would welcome a newbie video that explains this stuff to folks like me. The last 23 mins of the video were perfectly understandable . I have previously build six QRP transceivers from scratch (not kits)
Adding another comment mid Video: Menu "R Shunt" is to calibrate Current measurement Shunt Resistance of PCB Trace, What you refer to as a Low Pass Filter is the Selection of the Band Module in Place (Alternative Band Modules possible). And at Minute 27:00, you use an external Tool to translate dbm into S-Meter. Easier would be so go to Menu and Change it from showing dbm into S Value or Bar, or whatever you prefer ;)
Thanks for the updates and tips!
I ordered a (tr)usdx and plan on attempting to pair it with a digirig mobile. No information available for this online that I've been able to find. Any information on attempting to run digital modes?
At 35:10 ff you´re exactly right: The speaker was added last minute and was thought of as an "emergency solution" rather than a serious speaker.
The spkr on my KX3 is not that good either, so I always use earphones or a small capsule spkr like yours with it. But I wish they had made it compatible with some common spkr-mic.
I was specifically waiting for this video, as I had been eyeing the completed radio at the DL2MAN approved sellers! Thank you so much for all the time you put into this. It was the length of a TV show episode! Excellent! Just want to show some appreciation! Off to order the radio!
Most of this is way over my head. New to all of this. Good video and very thorough!
Noting that this video is now a year old, the new kits are pre-programmed, and the mic sounds much better than what you experienced. The only specialist things that you will need to build a kit is a VNA, a 3d printer and a dummy load. Everything else is optional. I feel like DL2MAN and PE1NNZ have listened to all of the comments out there and have made the necessary changes. Really impressive radio. I have 2! A premade standard kit and a classic band kit. The new beta firmware now has a frequency scope! Seriously cool. Amazing how much functionality they put into it. Thanks for the video
Hey Josh bought my first radio this weekend (baofeng uv5r+) thank you for all the effort you put into broadening horizons definitely solely responsible for the birth of this ham really loving the hobby so far even if I don't quite understand alot of it
And final comment: If you do a part 3, I´d be happy to join you for a Q and A ;) 73 Manuel; DL2MAN
We can definitely do a live stream. I’ll send you an email.
I used a built one purchased from DL2MAN's recommended Chinese supplier on a SOTA activation today (20m and 40m SSB). Used a little plug-in USB-chargeable speaker, which was a big improvement over the internal one. I'll use ear buds next time. Looking forward to seeing some recommendations. Some of the QSOs were hard work but I didn't get complaints about my audio quality.
The truSDX is an impressive design but there are a few small issues that need resolution. Some builders notice high SWR and excessive power readings in transmit. Unfortunately the designers missed the 328P datasheet note concerning the design of ADC input circuitry. Paragraph 23.6.1 states that the ADC driving impedance should not exceed 10K to guarantee accurate readings for all 328Ps. The truSDX design lacks pull-down resistors on the FWD and RVS ADC inputs for impedance control, and thus is susceptible to pin leakage currents and ADC channel crosstalk. It's the luck of the draw whether yours is OK without pulldown resistors. Mine was not. Some members of the forums have suggested changing R5 and R6 to 1K, and C29 and C31 to about 100K or whatever high value you can get away with. This worked for me with C39 and C31 = 2.2meg. If you do this mod the RF power will read 10% to 20% low. Fixing this will need a calibration constant to be added to the firmware. Oh, by the way, the FWD and RVS signals are reversed on the Rev 1.0 Nov. 2021 board silkscreens. Yep, they fixed it in software.
There also is another small issue to be fixed. The Audio output signal has a strong 80kHz component from the PWM technique used for the audio output. This may cause amplified loudspeakers to draw excessive current. Mine pulls 250mA at higher volumes. I added a small R-C filter at its input to prevent this.
All in all, an impressive design and a lot of fun. Tnx and 73's, N2GX
astonished that nobody reacted, seems to be good tips. which values did you use for the R-C-filter?
I'm having the same issue. So, you replaced C39 and C31 capacitors with 2.2Mohm resistors?
Nice Video, I have two from the 1st UK group buy and both work great. I have had one ticking over for digital modes using FT8,FT4 and JS8Call for over two months without issue. Look for me on 40mtr or 20mtr as its surprised me how well it is working. Look forward to the next 73 Ellis M5AEI
Thanks for your effort. A true hero.
yes - many kits require knowledge other than how not to poke your eye out with a screwdriver - more and more kits will require knowledge like the bootloader and firmware update, many would never have done this type of work before. New skill means new experiences.
The last moments of this video are so funny, Chloe the kit builder!
Thanks Josh, order my assembled radio from same seller, well pleased first QSO Oh-Fl POTA. Nice thx 73
Hey, just in the middle of the Video.... But didn´t want to wait with the comment till the end: One important advice (Burning Bootloader Process) is missing: When you´ve selected the fuse bits, you also gotta check the box for "burn fuses " !!! 73 Manuel; DL2MAN
Yes, I also noticed the fuse bits box was not selected, which it should have been selected for burning the Bootloader..
Just got my shipping notice Yeah mine is on the way!!!
Hi Josh. Enjoyed the videos. I will need your video to get my unit going again. Built mine worked first go , it had all the software pre loaded life was looking good. . Whilst 3D printing the case and fitting parts for fit to the PCBs I made the cardinal mistake of leaving the power plugged in . Those interconnecting pin headers came loose and next thing the smoke escaped from some of those multi legged fuses on the board. My heart just sunk with a lot of rude words. I found a hole in the MCU chip, the game was over. Like you I am now waiting for my re purchased unit and the other bits so I can harvest the replacement chips. So far three are confirmed kills and more casualties I guess when I have replaced the dead bits.
Just a little humerus story of what can go wrong when your just toooo cocky in your abilities. I do this stuff for a living over the past 40 years. @#%$ happens.
Keep up the great work on here most enjoyable. Richard. VK2VD. 73s.
Thanks Josh. Great review. No thoughts yet as mine is still on its way from Uptech.
I have also been waiting for this video. I have not 1 but 2 build kits from the green radio company. I should have bought it built :( I have 2 of these bricks here that need programming. I'm going to try ur video and pray...
Great intro video with the tiny hand.🖐lol.
Thats a fair bit of effort to get it all going but good to see it functioning.👍
Great video - fun project and result.
The power connector is the same as the Jenkapotomus!
I love "the last time on the HRCC"!
Man I am really envying you right now 😉
I am unable to get even one and you are holding two! 🙂 anyways your videos are great and inspiring!
Thanks! 😀
Outstanding coverage Josh! I am awaiting mine from Up Tech. 73 - KF6IF
same here did u get ur in?im in north bay ontario
@@EZ-HACK Yes, it took several weeks, but, it is fully functional and I have been loving it!
Hey Josh, which speaker did u buy to use wirh this? Sounds pretty good.
Note AVRDUDESS is at version 2.15 as of this comment. To program the Bootloader with an Arduino UNO as the ISP programmer, use "Arduino board as programmer using arduino as ISP firmware".
I may need counseling after that intro!!! Why? Because I loved it, which means I'm as whacked as you are!!! BTW, this is a fantastic video!!! You're starting to look like a ginger Gandalf, which is not a bad thing, but independent of this, you seem to actually have Gandalf's brain, which is quite HAMish!!!
Thanks but I’m not a ginger, lol
Good job
28:12 It seems like the best use of the truSDX would be weak signal protocol (WSJT etc.). 5 watts won't get very far otherwise.
Lol. 5 watts does fine.
@@HamRadioCrashCourse I re-read my comment and now realize it could have been taken as being negative towards the truSDX, apologies as that was not my intent. Quite the opposite - I am excited to get one of these and experiment! I am all about QRP and minimal power draw for the transceiver - I bet that I could cover my entire state with with only 4 of these using NVIS and JS8call. And they're so small with such lower power draw, it'd be a cinch to hike one of these + batteries + solar recharger into the undoubtedly remote locations required for the minimum number of nodes to cover the state. And they're so inexpensive I could actually afford it lol.
I had a SSB QSO with a guy in Spain with one of these things. Granted he has quite the antenna setup to be pulling me out.
I have had QRP to QRP QSOs from Maryland to Texas and Maryland to Florida. I haven’t setup for NVIS yet but I bet you could cover the state with one radio. I suppose that depends on the state
I'm waiting for my assembled (tr)u-sdx to arrive from China. I already have enough unassembled kits in my basement to keep me occupied for months and months.
In your previous video, you said that you didn't have the correct size barrel connector to power the radio on the top. Did you make a power cable or purchase one? Does it go to power poles or another means? Thank you Josh
I bought a bunch of bare lead wires with the coaxial connector on already and add power poles. I’ll add them to the description
Thanks for this video..great info....just got mine today. Where did you buy the power connector wires for this? I can't tell which size I need to get, and I don't see it in your description anywhere. Tnx and 73
Audio is now available through CAT control
Just went DIY tech. Is the bootloader installed and is the firmware already flashed with the pre-assembled version?
Yes you have to provide your call sign upon purchase so that it be used with the firmware upload
What hand mic and external speaker are people using with this radio? Just ordered my and I can't wait! Awesome video as always, thanks Josh! 73 N2SCD
UV-3R Handheld Microphone that's what came with mine
@@k94536 thanks
Might have to grab one of these. Also, what Icom radio is shown at 32:04?
Icom IC-R30
Hello! Tell me please. I have only CW, SSB and LSB on this thing. There is no modulation of AM and FM in principle, neither from the quick switch with the "Enter" button, not in the menu item "1.2 Mode". Maybe there is some secret of menu settings or me need to change the firmware? Sincerely, 73!
Idk that it has AM & FM. it’s not really needed in this type of radio tbh.
@@HamRadioCrashCourse It is clear that it is not too necessary, but I am disappointed that there are no AM and FM. Wouldn't be superfluous.
On a small QRP radio, FM and AM is not very efficient or effective. I am not surprised its not there tbh.
There are older version of the firmware that has AM and FM modes, but with the limited capacity of the processor those modes were removed for other features in later and most recent versions. The latest version of firmware has a spectrum scope and audio over CAT making for a very simple portable radio for digital mode
What plug-in MIC are you using on the (tr)uSDX? Would you recommend it or something else?
Not a great one. It is a pack in for another radio. You might be better off making one or making a new connector.
What is the mic you are using with the TruSDX?
Something cheap that was pack in on some other radio. No idea where I got it tbh
Josh, I ordered one of these "cute" truSDX . I powered it up with no antenna and it howled and squealed among the switching of all bands and the display would be bright and then darken and then just shut off. I have been negociating with E-bay and they said...try this, try that to no avail. I asked them if they could send me a unit that funcions and also correct my callsign in the window which was incorrect.... They have now offered me a new mainboard to install myself which for now, I have accepted...are there any difficulties that i should know about when I receive this board or is it just a simple swap and play??
KK6LNV King Kong 6 late night visitor
Marc Andrew McClure....92024
]
when will the next "No Dumb Questions" video come out?
After Hamvention this week
Josh, I can't find the link for AVRDUDESS...
Try this. blog.zakkemble.net/avrdudess-a-gui-for-avrdude/
What speaker are you using in the video I am looking for one.
I have it listed on my Amazon store. Link in description.
To re-iterate what I commented on Patreon, I ignore anyone sending over 20 wpm when I watch the RBN, if someone replies to me faster than I'm sending I usually ignore them too it it's a big disparity.
The first 1,000 people to use the link skl.sh/hamradiocrashcourse04221 or my code HamRadioCrashCourse will get a 1 month free trial of Skillshare
Colors!
ok i just fell off the train @ 7:10.😅
after i purchased the default assembled version thats 80/60/40/30/20 default, can I upload the Classic option firmware (80/40/20/15/10) and make it works both Tx/Rx?
73 de 9w8haz
No the rf board has toroids wound for specific frequencies
Файно є !
LOL @ "Sketchy looking" haha it is pretty bad.
What I learned from this immense techno-word-salad gibberish is that if my firmware ever goes down, I'm throwing my (tr)uSDX in the garbage.
Firmware is easy to upload, the boot loader however is quite the process. You may want to check out the latest firmware available it adds audio over CAT control there is even a spectrum scope display now!
But if you still decide to go the garbage route… I will pay for shipping if you are willing to throw it in a mailbox instead of garbage can
OMG my brain just seized up trying to understand your intro.. I'm an analog refugee and I find all your computer jargon impossible to understand. Please make some concessions for folks like me. We are pedalling as fast as we can!
I’m honestly not sure how I can slow anything down. What specifically is your issue?
Thanks for coming back. I have no software knowledge so the first 19 mins of the video were incomprehensible I would welcome a newbie video that explains this stuff to folks like me. The last 23 mins of the video were perfectly understandable . I have previously build six QRP transceivers from scratch (not kits)
You dun good Brother ..
k8xb
Thank you!
Far to complicated!
I'm not a fan of regulation and a fan of the constitution. Free the freqs. Encryption for all.
Sure. Like AT&T, maybe Disney sets up shop on the ham frequencies and encrypts their data. Sounds fun. 👍
Sounds like a good recipe for chaos.
Engage brain before commenting.