Search found 456 matches

by DL2MAN
26 Sep 2022, 17:44
Forum: General Information
Topic: AliExpress truSDX fails
Replies: 7
Views: 85

Re: AliExpress truSDX fails

Would you mind telling us the seller and date of purchase ?
I would suggest to re-upload firmware. Try Beta. Maybe something has gone wrong there

In deed: what you describe should not happen.
Let's see how we can fix it.


73 Manuel DL2MAN
by DL2MAN
26 Sep 2022, 15:15
Forum: General Information
Topic: AliExpress truSDX fails
Replies: 7
Views: 85

Re: AliExpress truSDX fails

What Power supply are you using and how is your Antenna Setup ? Since the (tr)uSDX is a very simple rig, it does not handle RF injection well, or Power Supply with a lot of ripple.... Bad SWR would cause effects like that, Nearby Magloops, Common mode currents on your antenna line etc. If I were you...
by DL2MAN
24 Sep 2022, 15:04
Forum: General Information
Topic: STL files and NewDiy kit
Replies: 5
Views: 590

Re: STL files and NewDiy kit

Please read the file description (especially the latest update) and you will find your answer.

73 Manuel DL2MAN
by DL2MAN
22 Sep 2022, 08:13
Forum: Troubleshooting
Topic: Hi Bands board problem
Replies: 19
Views: 723

Re: Hi Bands board problem

NanoVNA Crash Course ;)
viewtopic.php?p=3294#p3294
by DL2MAN
20 Sep 2022, 08:51
Forum: Troubleshooting
Topic: Hi Bands board problem
Replies: 19
Views: 723

Re: Hi Bands board problem

There must be an issue with the board from Sunny. I've ordered one as well and will construct it on arrival. I have the SAME Boards, as there is only one batch at the moment. I did my Tests with this Batch and they work. Let me add a little more disclaimers here: - Every small Problem will be magni...
by DL2MAN
19 Sep 2022, 07:30
Forum: General Information
Topic: About 'SemiQSK’
Replies: 10
Views: 471

Re: About 'SemiQSK’

Hello Yoshihiro,

I have confirmed the bahavior on 3 Rigs, and we are trying to improve the behavior by Software.

73 Manuel; DL2MAN
by DL2MAN
18 Sep 2022, 17:33
Forum: Troubleshooting
Topic: Classic bands: No output on 20/10m
Replies: 6
Views: 228

Re: Classic bands: No output on 20/10m

Did you set your LPF in Manu to "Classical" Bands setting ?
If yes, let´s see your measurement setup in Detail: How is the NanoVNA Connected, show a detailed shot of your NanoVNA Screen, so we can see the settings.

73 Manuel; DL2MAN
by DL2MAN
18 Sep 2022, 17:26
Forum: Troubleshooting
Topic: Hi Bands board problem
Replies: 19
Views: 723

Re: Hi Bands board problem

I haven't done any filter tweaking yet. And quote from the Schematic: WARNING: The low amount of toroid windings makes tuning of the filters more important than ever ! Especially second harmonic notch needs to be carefully tuned with NanoVNA !!!Example: On 10m the difference between 4 turns distrib...
by DL2MAN
15 Sep 2022, 06:22
Forum: Troubleshooting
Topic: Hi Bands board problem
Replies: 19
Views: 723

Re: Hi Bands board problem

@N6ALT Sorry, this was a misunderstanding then: you have output power even on 10m, but no RX ? Then it's most likely not related to rf board. How did you test RX ? @VE2RN You need to be careful when changing boards to always select the right one in the menu. Happened to me as well to have selected t...
by DL2MAN
14 Sep 2022, 15:46
Forum: General Information
Topic: About 'SemiQSK’
Replies: 10
Views: 471

Re: About 'SemiQSK’

Could you please tell us, what software version you are using ?

73 Manuel DL2MAN
by DL2MAN
14 Sep 2022, 07:59
Forum: Troubleshooting
Topic: Hi Bands board problem
Replies: 19
Views: 723

Re: Hi Bands board problem

Either Relay or more likely: Bad solder joint on one or both of the 2 Toroids....
Please triple check your solder joints there.

73 Manuel; DL2MAN
by DL2MAN
13 Sep 2022, 22:50
Forum: Troubleshooting
Topic: Lost volume control
Replies: 4
Views: 181

Re: Lost volume control

Cool ! Thanks for the feedback !

73 Manuel; DL2MAN
by DL2MAN
13 Sep 2022, 22:47
Forum: General Information
Topic: About 'SemiQSK’
Replies: 10
Views: 471

Re: About 'SemiQSK’

I am only concerned about the key click noise. When I turn on SemiQSK, I don't hear the noise, but the RX switching is slow and the first character is missing, so I can't communicate smoothly. 73 de yosihiro JJ3IUS test.jpg Hi Yoshihirio, Thanks for your feedback, that indicates some serious high s...
by DL2MAN
12 Sep 2022, 09:55
Forum: General Information
Topic: A new 3D printed shell
Replies: 1
Views: 227

Re: A new 3D printed shell

Beauty is perceived differently by everyone. I still like mine better ;)

73 Manuel; DL2MAN
by DL2MAN
08 Sep 2022, 18:38
Forum: General Information
Topic: Up Tech address
Replies: 1
Views: 127

Re: Up Tech address

Please contact Sunny directly:
yangqiu <yangqiu8866@163.com>

73 Manuel; DL2MAN
by DL2MAN
07 Sep 2022, 12:23
Forum: Troubleshooting
Topic: new problem with my (tr)uSDX
Replies: 6
Views: 304

Re: new problem with my (tr)uSDX

peppone wrote: 07 Sep 2022, 11:34 in the picture there is the right bs170 pinout?
Yes
by DL2MAN
07 Sep 2022, 12:22
Forum: Troubleshooting
Topic: No power on transmit (PWR 0.00W)
Replies: 25
Views: 618

Re: No power on transmit (PWR 0.00W)

New BS170s were hard to come by in Ireland, but should be here by Friday. For anyone else looking right now, Reichelt in Germany has the correct ones. Sorry, I have to tell you: The Reichelt BS170´s are not on par with original Fairchild / OnSemi. They have measurable different Values..... 73 Manue...
by DL2MAN
07 Sep 2022, 07:22
Forum: Troubleshooting
Topic: Lost volume control
Replies: 4
Views: 181

Re: Lost volume control

Does your Encoder work other then that ?
Does double-tapping the rotary encoder change Band ?
Can you change Frequenzy turning it left and right ?
If both questions can be answered with yes, please re-upload firmware.


73 Manuel; DL2MAN
by DL2MAN
07 Sep 2022, 07:19
Forum: Troubleshooting
Topic: new problem with my (tr)uSDX
Replies: 6
Views: 304

Re: new problem with my (tr)uSDX

Please check with a component Tester, that your new BS170´s have the same Pin Layout as the old one. There seem to be 2 Pin-Layouts. In case you have the wrong one, the FET´s are in Reverse now, and the Internal Diodes are shorting your DC to GND as soon as RF Board is connected. From the https://dl...
by DL2MAN
29 Aug 2022, 09:31
Forum: General Information
Topic: Shorter Knob, PCB revision
Replies: 5
Views: 324

Re: Shorter Knob, PCB revision

Ohwenzelph wrote: 29 Aug 2022, 05:02 Wouldn't it be easier to Dremel off part of the shaft?
What he said.... even buying an encoder with shorter shaft would be an option in case you don´t want to dremel your existing one....
by DL2MAN
26 Aug 2022, 08:07
Forum: General Information
Topic: Classical and High Bands Boards now Available for sale !
Replies: 16
Views: 1250

Re: Classical and High Bands Boards now Available for sale !

They are only available as KIT, not as built PCB´s or Rigs. Kit includes the PCB with all the right capacitors mounted, but you still need to solder relays, wind the toroids etc. Anyway: Even in case of Rig, Tuning needs to be done by end customer. They cannot do that for every rig. 73 Manuel, DL2MAN
by DL2MAN
26 Aug 2022, 06:35
Forum: General Information
Topic: Classical and High Bands Boards now Available for sale !
Replies: 16
Views: 1250

Classical and High Bands Boards now Available for sale !

https://de.aliexpress.com/item/1005004682173730.html But I need to add some info on the Classical and High Band Boards: I was not able to get 80% Efficiency with them ON THE HIGHER BANDS !!! More in the 70-75% region. Probably because of the FDT86256 FET in combination with higher frequencies. Howev...
by DL2MAN
22 Aug 2022, 20:44
Forum: Troubleshooting
Topic: RX CW/LSB on 20m-band with 12V/5V
Replies: 9
Views: 584

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

Thanks for the feedback Egon and glad I could help !

Enjoy your rig and hpe to cu on bands !

73 Manuel; DL2MAN
by DL2MAN
22 Aug 2022, 11:22
Forum: General Information
Topic: Max TX PA time?
Replies: 4
Views: 390

Re: Max TX PA time?

So YWU is telling ALL that 100% duty cycle (FM/CW) at ~10W TX (max DC in 13.8V) output (into 1:1 load) will NOT cause the PA any thermal over-heating life-degradation and NO adjacent PCA part degradation? YWU has actually tested this at >5 minutes continuous TX into a 50ohm dummy-load on each band?...