Search found 418 matches

by DL2MAN
11 Aug 2022, 07:51
Forum: General Information
Topic: Use for extra toroids?
Replies: 3
Views: 326

Re: Use for extra toroids?

I've tested very recently the the use of various efhw transformer core sizes (including ft37). You might want to watch this: https://youtu.be/nNzTf1F12BE And the video before explained the theory of the efhw and how to wind the transformer. Also worth watching if you're not familiar with this antenn...
by DL2MAN
10 Aug 2022, 18:54
Forum: General Information
Topic: Temperature of case
Replies: 2
Views: 91

Re: Temperature of case

A (tr)uSDX case is very unlikely to heat up as petg is a very bad conductor for heat....

What exactly do you have ?
by DL2MAN
10 Aug 2022, 18:51
Forum: General Information
Topic: External Battery Case
Replies: 3
Views: 374

Re: External Battery Case

The one from my videos is published here:
https://www.printables.com/de/model/103 ... ransceiver

73 Manuel DL2MAN
by DL2MAN
08 Aug 2022, 23:03
Forum: Troubleshooting
Topic: a problem when i connected (tr)usdx first time to battery
Replies: 8
Views: 202

Re: a problem when i connected (tr)usdx first time to battery

Yes, you can use them, and yes, it is possible.

73 Manuel; DL2MAN
by DL2MAN
07 Aug 2022, 13:11
Forum: Troubleshooting
Topic: a problem when i connected (tr)usdx first time to battery
Replies: 8
Views: 202

Re: a problem when i connected (tr)usdx first time to battery

C41 looks installed reversed on your PCB.... And that´s probally the root cause of your problems.
Look at my pic of a working mainboard for comparison. Watch especially for the markings on the tantalums:
20220807_150812.jpg
20220807_150812.jpg (143.22 KiB) Viewed 152 times
73 Manuel; DL2MAN
by DL2MAN
06 Aug 2022, 21:10
Forum: Troubleshooting
Topic: *Rxxxx* No Longer Supported Posting/Thread
Replies: 3
Views: 211

Re: *Rxxxx* No Longer Supported Posting/Thread

It´s also linked on the bottom of the where to buy page under "Disapprovals"
https://dl2man.de/where-to-buy-trusdx/
by DL2MAN
06 Aug 2022, 11:59
Forum: Troubleshooting
Topic: a problem when i connected (tr)usdx first time to battery
Replies: 8
Views: 202

Re: a problem when i connected (tr)usdx first time to battery

The only way that could happen would be with reversed tantalum caps. They act as a big fat short circuit when soldered in reversed.
Please share a detailed picture of your mainboard.

73 Manuel; DL2MAN
by DL2MAN
06 Aug 2022, 11:56
Forum: Troubleshooting
Topic: RX CW/LSB on 20m-band with 12V/5V
Replies: 2
Views: 82

Re: RX CW/LSB on 20m-band with 12V/5V

That´s a strange one.... In both cases (5V via USB or 12V via Main Power Supply) the related components (Mixer and OpAmp) are fed with 5V. Either via 7805 or directly via D4. The only thing that comes to my mind is L1: Does it create too much Voltage drop ? Please measure Voltage on any VCC Pin whil...
by DL2MAN
03 Aug 2022, 07:12
Forum: Troubleshooting
Topic: New adventures with *Rxxxx*
Replies: 7
Views: 318

Re: New adventures with *Rxxxx*

Hi Frank, But I must say that *Rxxxx* unit is very close and 10 - 20% better in power and efficiency than the approved chinese seller. In order to achieve the 80% PLUS, the units need to be tuned. This cannot be done on mass production level. So it needs to be done by user: https://www.youtube.com/w...
by DL2MAN
03 Aug 2022, 06:51
Forum: General Information
Topic: Sticky: Post (tr)uSDX questions for the developers (Manuel DL2MAN and Guido PE1NNZ) in here
Replies: 132
Views: 20816

Re: Sticky: Post (tr)uSDX questions for the developers (Manuel DL2MAN and Guido PE1NNZ) in here

@N6WLM
No, the source code for (tr)uSDX is not available. (tr)uSDX is Creative Commons, but not open source.

@RichardB:
This setting was enabled by default in the forum software. I´ve disabled it now.

73 Manuel; DL2MAN
by DL2MAN
27 Jul 2022, 13:05
Forum: Troubleshooting
Topic: Spontaneous sending of an endless series of dahs
Replies: 5
Views: 183

Re: Spontaneous sending of an endless series of dahs

What is the source of your Kit ? Maybe they have chosen the wrong type of mic ? Or maybe there are tolerance variations of the mic ? I suggest: Remove mic, to exclude it. If behavior is still the same: It was not the mic -> search coninues. If it stops, find replacement. Electret capsules are cheap....
by DL2MAN
25 Jul 2022, 21:26
Forum: Troubleshooting
Topic: Careless error, help diagnosing after frying it?
Replies: 21
Views: 521

Re: Careless error, help diagnosing after frying it?

My best guess would be C2, C4 and C8.
I´m feeling with you. But you´re a very lucky man...
Normally we would discuss now all the IC´s that need to be changed.
You should consider to go buy a lottery ticket ;)

73 Manuel; DL2MAN
by DL2MAN
25 Jul 2022, 18:50
Forum: Troubleshooting
Topic: *Rxxxx* No Longer Supported Posting/Thread
Replies: 3
Views: 211

Re: *Rxxxx* No Longer Supported Posting/Thread

Thanks, fixed it. Was just copy and pasted from General information, but the link was cut off....
by DL2MAN
25 Jul 2022, 18:08
Forum: Troubleshooting
Topic: *Rxxxx* no longer supported !
Replies: 0
Views: 211

*Rxxxx* no longer supported !

We hereby officially announce, that *Rxxxx* will no longer be supported by us. *Rxxxx* will also be disqualified from Approval procedure. A detailed counter-statement to their accusations in their "technical Document " is published here: Scroll Down to Disapprovals as our side of the story...
by DL2MAN
25 Jul 2022, 12:10
Forum: General Information
Topic: BS170's versus an FDT86256
Replies: 1
Views: 219

Re: BS170's versus an FDT86256

Good question. In theory FDT86256 should be more robust. In Practice I have a) only one Board with FDT86256, as it still only at the beginning of evaluation phase b) never managed to blow either of them under normal use. My last failing PA Stage was, when we used IRLML2060 on 8-Band Sandwich. Wait a...
by DL2MAN
25 Jul 2022, 12:05
Forum: General Information
Topic: Lateat version of the firmware?
Replies: 4
Views: 665

Re: Lateat version of the firmware?

Guido has added a changelog.

73 Manuel; DL2MAN
by DL2MAN
25 Jul 2022, 12:04
Forum: General Information
Topic: Sticky: Post (tr)uSDX questions for the developers (Manuel DL2MAN and Guido PE1NNZ) in here
Replies: 132
Views: 20816

Re: Sticky: Post (tr)uSDX questions for the developers (Manuel DL2MAN and Guido PE1NNZ) in here

Classic and High Band RF Boards are on the Way to me for evaluation.
Once we have tested, they will be available via Sunny.

73 Maneul, DL2MAN
by DL2MAN
25 Jul 2022, 10:29
Forum: General Information
Topic: Auto CQ
Replies: 2
Views: 222

Re: Auto CQ

When in Menu at the CQ Message, Press Menu, and it starts.
Demonstrated here:
https://www.youtube.com/watch?v=gW5r5JQRbus&t=1084s

73 Manuel; DL2MAN
by DL2MAN
25 Jul 2022, 10:22
Forum: General Information
Topic: R Shunt value setting
Replies: 2
Views: 202

Re: R Shunt value setting

Hi Richard, RShunt is the resitance of the shunt PCB-trace, for Drain Current measurement on RF Board around U1 (INA219). It turned out, PCB Trace resistance is not as constant as we thougt it would be. It is not intended to "fake" Efficiency, when there is none, but to have a possibility ...
by DL2MAN
25 Jul 2022, 07:11
Forum: Troubleshooting
Topic: Ever changing serial number
Replies: 4
Views: 166

Re: Ever changing serial number

Ever changing Serial Numbers are a sign of wrong fuses.
Make sure, while burning bootloader, to have the Fuses set to the correct Values.
Check Screenshots on Bootloader Page for Details.

73 Manuel, DL2MAN
by DL2MAN
22 Jul 2022, 16:20
Forum: General Information
Topic: *Rxxxx* no longer supported !
Replies: 0
Views: 490

*Rxxxx* no longer supported !

We hereby officially announce, that *Rxxxx* will no longer be supported by us. *Rxxxx* will also be disqualified from Approval procedure. A detailed counter-statement to their accusations in their "technical Document " is published here: Scroll Down to Disapprovals as our side of the story...
by DL2MAN
20 Jul 2022, 07:21
Forum: Troubleshooting
Topic: Transmits all modes except CW.
Replies: 12
Views: 448

Re: Transmits all modes except CW.

That is a very strange error. Could you please do a factory reset ? Press and hold rotyry encoder button while powering up the rig. (You need to re-calibrate your ref-freq after that and in case you use not the standard "lo band rf board" set that as well) If you still can TX in all other ...
by DL2MAN
20 Jul 2022, 07:16
Forum: Troubleshooting
Topic: Corrupted display (SOLVED)
Replies: 3
Views: 165

Re: Corrupted display

I would suggest a reset:
Press Rotary Encoder Button while powering up the radio.
Everything will be reset to factory defaults, so you need to do frequency calibration again, and if you use something else than low band RF Board, this needs to be re-entered as well.

73 Manuel; DL2MAN
by DL2MAN
20 Jul 2022, 07:07
Forum: Troubleshooting
Topic: Hamlib error: Protocol error
Replies: 13
Views: 615

Re: Hamlib error: Protocol error

I actually NEVER got it working with HAMLIB. But in my Opinion, this has nothing to do with (tr)uSDX Firmware, but the way, how hamlib is adressing the rig. That would be something for Guido @pe1nnz to investigate. Here are my working Settings with OmniRig: trusdx_omnirig.JPG And here are my working...