Date   

Re: Now transmit power. All tx testings ok but finals

Gary Anderson
 

Cesar, Glad you have it working!
Please take the stupid and unnecessary comments with a grain of salt. Any English speaker who cared knew exactly what you were conveying.
As an almost native English speaker, I was a little upset when I saw the smart ass, non helpful comments.
Best Wishes,
Gary


Re: uBitx v6 board failure--suggestions? #ubitxv6 #v6

John Terrell
 

Here are the screenshots. Again there is signal on the first, TP2. This is at 50 mV per division. There is no signal on 2nd and 3rd (TP4 and TP5), again signal appears at the next two (TP5 and TP6) and the last two are TP7 (off scale on the first (50 mV per division) and again the very last at 500 mV per division. Any suggestion would be greatly appreciated!


Re: uBitx v6 board failure--suggestions? #ubitxv6 #v6

John Terrell
 

As suggested I measured the signal on an oscilloscope at various test points. Here are screenshots. TP2 through TP6 are at 50 mV per division. The last two screenshots are TP7, the first which is off scale and the last is at 500 mV per division. This was CW with a 50 ohm dummy load. Output did not even budge the needle on my 20 watt meter, although switching to my 80 meter dipole I could hear a weak signal on another receiver. By suggestions would be appreciated!


Re: Nextion 5" files

Richard DeMartini
 

Nevermind..... I just found them under the files folder. I guess I couldn't see the folder until I joined the group.


Nextion 5" files

Richard DeMartini
 

I found the Nextion basic 5" display file (ubitx_5_B_11_jA.tft) is there a different file for the enhanced display 5"? What file (NX) should I use for the V6?


Re: New Arduino CAT Control Library for Homebrew SSB transceiver #arduino #cat #homebrew

SP Bhatnagar
 

On similar lines I had written Arduino programs to control using Yaesu FT2000 protocol which is used by all modern Yaesu rigs. The library was announced in this forum in May 2020 and is available from


Hope someone finds good use for this.

I am using this code for CAT control of my uBitx with TFT VFO/BFO also available from


Enjoy radio and keep safe,

VU2SPF/ S Prakash Bhatnagar


Re: Wireless CAT Control (And audio?)

Owen Vinall
 

Definitely interested. 

Regards
Owen

On Fri, 29 Jan 2021, 10:11 am gector, <gector@...> wrote:
Alright, so this is my first post here besides replies to other people.

I've made this little device to do WiFi CAT control for the UbitX v6.1, if anyone is interested I'll link the source code and post the schematic.
https://youtu.be/qx-zSLfK-3o

It currently only replaces the need for the USB cable to a computer, for audio you still need to run audio cables. If there is interest in this project, I can probably put together the programs required to do wifi audio as well. I work primarily on Linux, but this could work on windows later down the road.


Re: Disable screen for energy saving

Jerry Gaffke
 

You could measure the voltage across the resistor with your DVM.
Current in Amps through the resistor is Volts/Ohms.
Power dissipated by the resistor is Volts*Amps = Volts * (Volts/Ohms).


On Thu, Jan 28, 2021 at 04:16 PM, Will B wrote:
Hi Raj,

Do you know the wattage of the 22 ohm resistor, or better yet, do you know if a standard potentiometer can be put in series after the 22 ohm resistor to change the brightness?  Otherwise I'd have to come up with some transistor circuit to control the brightness...  The brightness is great for outdoor work, but because I'm in a dimly-lit environment most of the time, the brightness of the display is very uncomfortable.

Thank you! :-)

Will B
AF7EC


Re: Disable screen for energy saving

Will B
 

Hi Raj,

Do you know the wattage of the 22 ohm resistor, or better yet, do you know if a standard potentiometer can be put in series after the 22 ohm resistor to change the brightness?  Otherwise I'd have to come up with some transistor circuit to control the brightness...  The brightness is great for outdoor work, but because I'm in a dimly-lit environment most of the time, the brightness of the display is very uncomfortable.

Thank you! :-)

Will B
AF7EC


Wireless CAT Control (And audio?)

gector
 

Alright, so this is my first post here besides replies to other people.

I've made this little device to do WiFi CAT control for the UbitX v6.1, if anyone is interested I'll link the source code and post the schematic.
https://youtu.be/qx-zSLfK-3o

It currently only replaces the need for the USB cable to a computer, for audio you still need to run audio cables. If there is interest in this project, I can probably put together the programs required to do wifi audio as well. I work primarily on Linux, but this could work on windows later down the road.


Re: PCB prototype boards

gector
 

Has anyone mentioned Oshpark? Minimum order of 3 boards, and I think their cost for a 2 layer board in 5 days is $10 per square inch. I've used them several times.

I'd also like to state that in-house prototyping is a lot easier these days, although has yet to be perfected. I've been experimenting with various methods for about a year now and if you have a 3d printer, it's relatively easy to get 0.2mm or better precision on 1 or two layer boards, although vias and thru-hole is actually more annoying than SMD components. So far our most successful methods are scratch-&-etch and film-expose-&-etch. Most of our equipment is still homemade, I'm hoping to eventually perfect and possibly equip other people with the methods we've been working on. I've even got a way of doing multi-layer boards after figuring out how to source thin copper-clad pieces.


Re: Now transmit power. All tx testings ok but finals

Curt
 

Cesar

You communicate well, and its many of us in USA that can only use one language (like me). I hope indeed things are working with your ubitx, if not communicate with Evan who is an excellent troubleshooter (Raj in India is another). Glad to have you in global ubitx community. 

Curt wb8yyy


Re: Now transmit power. All tx testings ok but finals

César EA3IAV
 

I meant a blown fuse... sorry, my English is not so good. 
But I did use a dummy load during the whole process as well as a regulated power supply. 

After replacing the irf510 from a local electronic shop everything works

Anyway thank you for your help. 


Re: ubitx v6 - issues with new radio

Curt
 

Adrian

I wish we would have evaluating it before the mods, but these should not impact RF. See if you have dc continuity from the coax center conductor back to the first series blocking capacitor. As for receive, start at lower frequencies like 7 MHz where there are many signals, 10 or 20 feet of wire should receive something if its working and bfo is reasonably aligned. Noise should increase when you plug in a decent length anrenna.

Curt wb8yyy


ubitx v6 - issues with new radio

Adrian.smith1@...
 

Good morning. Please bear with me as I'm extremely new to the ham world - got my Technician license eight weeks ago. I'm not new to computing and hardware assembly (I'm a software engineer by training and a hobbyist hardware tinkerer) , although I'm a VERY long way from the skills many of you have from your posts.

I'm a new ubitx v6 owner. Bought the full kit, assembled it to verify it powered up correctly, then replaced the stock screen with a Nextion 2.8" screen and installed the latest version of KD8CEC's firmware. A local Elmer gifted me with a dipole antenna with 16' legs, and I've installed it as best I can in my current living situation. It's 10' off the ground and strung between two rain gutters on the house. I believe it's isolated from the gutters - the dipole ends are hooked into two hooks that are drilled into wooden boards that rest inside the gutters.

As the moment I can hear AM radio stations within 30 miles, but very faintly. I've heard a CW broadcast once but no phone. I'm using the electret PTT handset and the TX light comes on when I press the button but there's no indication anything is being broadcast. I've had no QSO's whatsoever.

The documentation for the radio said it was preconfigured, but thinking it may not be correct I calibrated the BFO using Farhan's online tool. Then I set zero-beat using a local AM station. The result was no changes in audio reception and no contacts.

I'm at the end of my limited knowledge. My thinking is that perhaps it's antenna location that's causing the lack of signals. My knowledge of antenna design is non-existent and there are no QRP hams in my area so I'm a bit out of my depth at this point. I don't have a signal analyzer, oscilloscope, or SWR meter. I do have a multimeter. I apologize if this is too newb of a situation for many of you - I'm hunting my way through this world in the dark.

Anyone have any thoughts as to why my reception is so poor? I haven't done anything to the radio hardware since it arrived from the factory except install the Nextion screen. All the functionality seems to be there - I'm just not hearing anything.

Thank you in advance!

-Adrian Smith
KJ7SOY


Re: Raduino Prototype Help

Mark Erbaugh
 

I modified my prototype to be powered from the USB port on the Nano Every. I run both the display and the DDS off the 3.3v output. I have 5v / 3v level converters for the signals controlling the display and DDS. Those are powered by both the 3.3v and 5v outputs. The LED backlight for the display is also powered by 3.3v. Everything seems to be working fine and the supply voltage issues when I measure the clock outputs of the DDS have gone.

73,
Mark, N8ME


Re: Spectral analyser

Gerard
 

Re,

If after my tests, my analyzer works, do you think I can negotiate with this seller to turn it into an oscillo?
HP 1801A Dual Channel Vertical Amplifier(50MHz)/1821A Time Base Delay Generator | eBay
I could offer her 30$ (25€). To try?
First be sure that it is compatible with an HP182T base, I
thinks so.
cdt


Re: Spectral analyser

Gerard
 

Hello,
I received my analyzer this afternoon. Everything is fine, no breakage and abnormal noise inside.
First observations: The screen is relatively large, all buttons and switches are running well. The rear connector of the analyzer is in good condition. For the one inside the oscilloscope, it looks a bit oxidized. 
We may have to clean it up.
I still have to find an input adapter. For the probes(s), I have seen several videos about it.
Remains in these times to "disinfect" it a little. Lol
 


New Arduino CAT Control Library for Homebrew SSB transceiver #arduino #cat #homebrew

Dean Souleles
 

(Also posted to SoftwareControlledHamRadio group - sorry if a duplicate for some)

Hi all -


I got frustrated with the  inconsistent behavior of the Yaesu FT-8x7 CAT emulation library that many were using to add CAT control to homebrew SSB transceivers (including the uBitx).  It was particularly a problem with the most recent release of WSJTX that has still not been corrected.   So I decided to to move away from Yaesu emulation and implement the ICOM CI-V CAT protocol emulating an IC-746 transceiver.  I chose the CI-V protocol because, unlike the Yaesu protocol it implements a complete handshake between the CAT controller and the rig with a well defined communications protocol. 

I am pleased to make version 1 of the KK4DAS IC746 CAT Library available on Github - kk4das/IC746CAT

I have tested on a homebrew transceiver of my creation. I tested on an Arduino Nano and Arduino Nano Every although it should work with any MCU with a serial port. It works with WSJTX in all modes as well as the fldigi suite, Ham Radio Deluxe, the hamlib rigclt command line, and the CatBkt universal rig CAT control tool. It should work with any hamlib enabled software.

The following CAT functions are implemented:

  • PTT (SET ON/OFF) or GET PTT state
  • VFO A/B Selection
  • VFO Swap
  • VFO Set A=B
  • Split (On/Off)
  • Frequency GET/SET
  • Mode GET/SET (USB, LSB only)
  • S-meter level GET

All other functions are coded to give correct reasonable responses to other CAT commands.

The library methods are fully documented in the header file and a fully working example sketch is supplied.  The example sketch is not a complete radio controller, but it has enough functionality to test CAT control commands from any CAT software - I used it to test with all of the above before integrating in to my rig.

The library takes care of all the protocol handling and communication between your sketch and the CAT controller. Your sketch must provide callback functions to "do the work" of controlling your rig.  An example callback function you need to write is:

#include <IC746.h>
IC746 radio = IC746();

void catSetFreq(long freq) {
 // your code goes here to set your rig freq
}

You register your callback with the library in  your setup() function like this...

radio.addCATFset(catSetFreq);
rado.begin();

and then in your loop you call:
radio.check();

Whenever a CAT command is received your callback function(s) will get invoked.  As I said - it works well with WSJTX, fldigi, Ham Radio Deluxe and anything else I have tried it with.   But then I am only an army of 1! 

I haven't looked at porting to any of the uBitx sketches but I wouldn't think it would be too difficult.

If you download it please let me know.  And if you try it out and find any bugs, please really let me know.

73 and cheers all,

Dean
KK4DAS


uBitx v6 linear amp #ubitx

TD
 

I have the uBitx v6 and would like to add a linear amplifier for voice/phone operation.  Can you guys recommend either a kit or assembled amplifier?

Thanks
TD

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