Allison,

Thanks for your succinct review and history of the microbitx (ubitx) evolution. ?The question is often asked here in one form or another as individuals like me try to find info on the older versions. ?I'm still trying to find time to finish my V4. ?The one thing that has happened during my delay is the resolution of many of the issues (harmonics, AGC, etc) that I can now take advantage of. ?Fortunately, the history is all here if one is willing to make the effort to do the research. ?I'll also say that considerable basic history on the ubitx can be found by searching the ARRL on line archives.

And thanks again Allison, not just for the history provided here, but also for the considerable guidance you have provided to all of us in resolving many of the problems with our radios. ?For many of us, the fun is in the building/creation of these little bitty electronic miracles that allow us to communicate around the world on 10 watts or less. ?Having built my first 1 tube (1T4) reciever nearly 70 years back I'm still at it and still learning from elmers ?like yourself. ?
--
Sodypop?
KJ6VGB

Vic,
I downloaded the zip file from:?? extracted the files and tried to open the hmi with both the current and LTS Nextion editor.? In both cases I get a "Wrong resource file or resource file has been damaged" error.? Do you have a suggestion to correct the error?

73
Evan
AC9TU

The update to the Nextion was concurrent with the additions for a second Arduino on the KD8CEC site:


?
You'll see the links down the page.

=Vic=

Matt,
Congratulations on the successful build!? Now the fun continues with upgrades and modifications to make it just the way you want it.

Since you are talking about case options, I will assume that you did not buy the full kit.? If this is incorrect, let us know.

What is it you do not like with the speaker options?? There are mods to the audio section to either reduce hiss, gain, or other changes.? I would suggest searching this message board for the symptom that you want to correct.

Yes, you do need a TRS plug to connect to the headphone jack.? The tip and ring are connected together to the output of the LM386.? Using a mono plug will short out the output of the audio amp.? NOTE: there is a speaker jack on the mainboard per the schematic.? I attached a picture of the mainboard with labels of the connections. The speaker connection is the P4 two-pin connector next to the volume control.? ?I must apologize to the contributor, as I do not have the contributor that provided the picture and labels.

I do not have a v6, so I cannot be sure if there is a memory function.? When I checked the HFSignals.com page, I did find under the circuit description an explanation of the controls.? A memory function was not listed there.? The controls description is far down the page under "Operating the Radio."


As to what to do next, the short answer would be to operate!? Get on the air and make contact.? The longer answer is to search the web for upgrades or mods that you would like.? A good source other than this board is ubitx.net.? There a lot of modifications listed there.?

Have fun!
73
Evan
AC9TU

Hi all. Absolute noob at the ubitx here. More or less a first time radio builder also.
Got home Saturday afternoon to a package on the doorstep. Checked in to my favorite net on 80m with it this morning!
My first case option isn't working out so that's already on the list to be redone.
My speaker options aren't working so I'm using an audio jumper to my computer and basically making the computer think it's a mic.
"listen to this device" and I hear it on my computer!
I assume I need a TRS plug for the speaker? All I have is a mono.
Does the V6 have frequency memories?
Is there one website where I can find a complete list of the controls?
Now that it's working what do I need to do next?

Thanks!? Matt, KF4ZGZ?

Adam,

I went back a searched the board messages and found this one:
/g/BITX20/message/67572

It has a different HMI and TFT files for the Enhanced version of the 3.5" Nextion.? It does have a different configuration screen, so you could try it.? I will be trying this version myself.

Vic,
Do you have a download location for the hmi and tft files that you are referencing?

73
Evan
AC9TU

Adam,

The missing CW Keyer menu button was not implemented in the Nextion 3.5" display code by KN4UD if you got your files from ubitx.net.? I do not remember the reason for not including the menu item.? It could have been that there was not enough room left in the Nextion memory to include that screen.? It could also have been that he did not see a need, as the function to change the keyer can be done through the supported "yellow box" legacy menu function.? It was not a function that I use often, so I did not dig into how to add it back.

Though ubitx.net lists version 1.097 for the Nano code, I would suggest using the latest 1.2.? The Nano code is mostly the same between the versions, though there are some errors that have been fided in the 1.2 version for SDR connections on the v5.? The issue again is in the Nextion coding, not the Nano coding.? Here is the GitHub link:


The only way to get back the CW Keyer menu would be to modify the Nextion hmi file, compile and then download it to the Nextion.? If you do get an out of memory error on the compile, then you will need to cut out another screen to free up memory.? For some installs you will need to remove the Nextion to get to the microSD card.? The "standard" orientation puts the microSD card on the bottom of the Nextion and requires it to be removed from the rig.? There is an orientation choice in the configuration of the Nextion editor that allows you to flip the display so that it can be mounted with the card on the top of the display.??If you do decide to try modifying the Nextion code, I would suggest that you change the mounting and orientation so that you can insert the card without unmounting.

You can also search the internet to see if there is another tft file that more closely meets your needs, though I have not found one.

The above are based on what I have read or done.? There may be better options that I do not know of.? AS always any suggestions or corrections are welcome.
Good Luck and 73
Evan
AC9TU?
?

You may need to update the GUI loaded into the Nextion. I originally had V2 and it did not have the CW key menu, but found a V3 had been posted which swapped the ATT and IFS and also added the CW menu.

=Vic=

Congrats on the trouble shooting!

So I’m still totally new at the Ubitx. ?I received my version 6 last week. I’ve upgraded to a 3.5 Nexion and CEC version 1.2. ?I’m enjoying the firmware but mine doesn’t show a CW Keyer option in the screen menu. Does this need populated somehow? I can still access the CW settings using the encoder but from everything I’ve seen there is a CW menu in the screen menu. ?

I’ve tried installing v1.097. No luck.?
anyone else have this issue?

开云体育

It all started with the minima in 2014.

HF1? from about april 2014 was the base design that was later called microbitx.? It did not
appear as a production?board/design/kit until it was V3 level.? Prior to that is was all self
made and maybe one or two?off (likely 3 or 5 boards, proto shop)? builds.

If there is a V2.2 for sale its a random one off or may be actually a Bitx
(similar bot the same) which goes back another 10+ years.? BItx (band 40 or 20
and 17 are common) were kitted but is a single conversion compared to
HF1/uBitx?being a dual conversion.

Hardware wise the difference from V3 though V5 are small if any biggest being
the audio amp, output low pass relay arrangement, then later the 45mhz IF and
a few parts changes.

Allison
---------------------------------
No direct email, it goes to bit bucket due address harvesting

I use the v6 process to calibrate my radios:? set BFO using the Ashhar Farhan video and the BFO tuning page.

1 - Set the BFO using the bfo-tuning-aid.
2 - Calibrate the rig
3 - Reset the BFO using the aid






Note: This is only with the KD8CEC software on the v5.? The stock software of the v5 puts the rig into TX mode at 10MHz.? You are then to adjust the calibration until the signal is zero beat on another receiver set to 10 MHz.? Also, you can use any AM station that you know the frequency is correct.? You just set the dial to the correct frequency before you go into the calibrate mode.

Example:

6.07

Radio Channel 292

?Rohrbach Waal

German, Dutch, English

05:25-19:00

?From?

Assuming the frequency is correct (6.07 MHz), and you can verify that it is the correct stations, then you set the radio for 6.070000 MHz, go into calibrate mode and adjust the calibration to zero beat the station.? Press the PTT button on the mic to save the value, and then wait 10 seconds to power down.? Go back and then readjust the BFO.

When using Memory Manager:
Always start by reading the current data from the uBiTx.? I then save to a temporary file so I can go back to the starting point.
Make the adjustments
Write the values to the uBiTx.
- Close the connection in Memory Manage. IF you do not do this the then you will need to restart? Memory Manager as the commlink gets corrupted.
- Disconnect the USB cable
- Power cycle the uBiTx.
- Test the new settings.
If all is good, reconnect Memory Manager, read the values and save the file to a known location in case you need to replace the Nano in the future. (The calibration parameters are mainboard specific and can be transferred to another Nano with the same results.

I hope this helps.
73
Evan
AC9TU

开云体育

Hi everyone,

Greetings Jack,

I am interested in the keyboard CW keyboard/keyer chapter you offered. The CTS has returned after three operations, and over two years of recovery time. Still enjoy CW, but spend most times listening on the sidelines, and not getting in on the fun. The various keys are on the desk, but used rarely. Thank you.

73,

Wes
KH2EE

Good find on your part!? Glad that you found the issue.

It seems like there are more manufacturing issues cropping up recently than I have seen in the past.? The problems do not seem to me to be from shipping or miss handling on the part of the customer? As stated before, I hope that Ashhar Farhan is reading these posts as there may be some systemic problems that need to be addressed.? Cracked parts and poor solder joints should not get through testing, let alone be there in the first place.

73
Evan
AC9TU

Hello Evan

As told, my radio (v5) did work, but intermittand. The sensitivity was very, very low. I've been aligning during days, and days, and days...
Today I once more checked the receiver. Audio part: ok. 11 MHz to test points 16 and 17: nothing happens. Than checked TP18 with a 50 MHz oscilloscope: a poor 11 MHz signal, some 50 mVpp, very distorted. Same on pin9 of the Raduino board, and the right hand side of C4. Beautiful 11 MHz (600-700 mV sine) on the left hand side of C4 (oscillator chip side). Removed Raduino from the chassis, checking C4 with?magnifying glass: is was broken (see pic). Replaced it with a (wired) cap, and yessssss: it was clear by hearing the noise already, the miracle happened. Could receive FT8-sigs on 7074 USB with my finger as antenna...

And now finally for the alignment !
Thanks once again Evan !

73's from Belgium - ON6NT
?

Hi guys,

Go to the ubitx.net website download section and click on VU3SUA case construction link. This will get you to a page with many pictures you can download to guide you.?

73