Okay have fun but no corona there, every evenement is canceled overhere??

How did you calibrate the BFO?? Did you use this page?


It will work with just about any uBiTx, as all are set up for approximately a 2.7 KHz audio bandwidth between 300 Hz and 3 KHz.? The difference is the BFO frequency.? For the v5 it is around 11.0555 MHz.??You set it up by tuning to a "clear" frequency and adjust the plateau peaks to be between the red lines.??

A simple test to see if the receiver is working, in general, is to verify the change in signal level (static) between an antenna connected and one not connected.? Without an antenna connected it should be very quiet, and get significantly louder when connected.

Most of the receiver signal issues listed on this board are ultimately solved with the BFO and then the frequency calibration process and then back to the BFO, in that order?

NOTE: for the stock v5 uBiTx, the frequency calibration process (non-BFO) will put the rig into transmit mode at 10 MHz.? You need either a frequency counter or another receiver and a dummy load.? You need the dummy load as 10 MHz is not in a legal ham band.? You do not want to send the signal out over the air.

My first dummy load was 4, 2 watt 47 ohm, resistors with 2 sets of 2 parallel resistors connected in series.? Gives you a 47 ohm,? 8 watt capable, load.? Good for short transactions with the uBiTx.? You can mix and match whatever you have in your junk box.

My experience with both the v4 and v5 uBiTx is that when calibrated (and an audio amp for the v4) they are very close to my Icom 7300 in receive sensitivity and selectivity for SSB.? Just does not have all of the filter and other features of the "big" rig.

Good luck, learn,? and have fun!?
73
Evan
AC9TU

The com port changing is pretty normal. Windows will re-number the same device depending on what specific USB port you plug it into, which is a bit silly, but that's how it works.

A few follow up questions:
1) Can you please copy the text or screenshot the errors you're getting?
2) You get a white screen, but can you tune around and/or hear anything using the tuner knob? I know I saw white screens using some of the stock software, but could also be that it got corrupted while trying to program.
3) When you're trying to program the radio, do you have the radio turned on? If not, your computer will try and back-power stuff, which, depending on your computer's USB port, may cause stuff to brown out.


Reed

Hi,

I just received a knockoff programmer and some SMD adaptor boards from eBay.

So was able to solder one of my 24 cent processor chips to a 25 cent adaptor board and program it to run a blink test.

The Nuvoprog programming utility, I modified to program the MS51FB9AE chip, recognized the eBay programmer and successfully programmed the chip. So the programming utility works with both the NuTiny development board and bare chips.

So, you don't need to buy a development board to make things with the chip.

The programmer is completely undocumented, but the wiring pinout was the same as the official NuvoTon programmer. Just test for the vcc and ground pins to be sure you start in the correct orientation. I have another cheaper $8 programmer coming from Bangood. Will see how that one works.

Tom, wb6b

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Check to see if you have a cw sidetone. If you don't have a key, at least carefully put a wire across the key interface. I suggest this as a way to verify receive audio is okay.

Gently tap on your TR relay, mine was stuck once.

One can carefully signal trace a receive chain with your finger, to see where you can couple a signal in. Maybe sounds strange but I have fixed a few receivers this way, except I used a stick on my tube receiver.

Ed
Thanks for your suggestions. I just did the calibration and BFO again. No change. The problem there is that I can not receive any stations
to hear. I heard a tone around 10 mhz. very weakly. Could have been WWV... Not sure.
I'm starting to think I have a defective board....
Again thanks.... If you think of anything else please let me know...
Doug

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Try and free up as much memory as you can in the editor. ?Maybe compress the images a little.?

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Doug

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Hi
I have a question I hope someone can help me with. I assembled a Ubitx V.5, and everything seems to work
except no receive.
It transmits cw and? mic. If I hook another transceiver to another antenna, it hears it with 1 watt being transmitted.
When I hook the Ubitx to a receive antenna, it sounds like a receiver with the antenna disconnected.
I can hear some birdies, and some are loud. But, no signals even on 20 meters FT8 frequency.
I checked with an ohm meter from the coax center connector to TP1 and have continuity
I do not have a scope, or RF signal generator or a frequency counter right now.
I know that limits my troubleshooting ability greatly. I used to have all that equipment, but sold it years ago.
I could possibly borrow the equipment.... Any help would be appreciated.... Maybe something simple.
Thanks in advance
Doug.

Thank you evan. That did it. I downloaded the LTS version and everything is working like a charm.?

Many thanks ? ?? Tried your suggestion,? alignment screen comes up but still no response to conrtols other than volume. ???? Dave c?????? GW0NVF

Everything is fixable Ralph.

The first thing I would check the tools menu.? You have nano selected under the tools/board tab and when you click on tools/board info you get a window come back that shows that you have pinged a board. Mine always comes back and says something like unknown board at such and such address

If you get errors it is possible that it is the cable. Have found some usb cables which carry power but won't work to load data or not without errors. I doubt if anything is damaged. .?

If worse comes to worse program a second nano and swap it in. Is your nano socketed?


--
73
Dave

I got curious and checked on the Nextion web page.? Seems there is a new version and an LTS version.? You might want to try the LTS version to see if that one can compile the 2.8 files.



73
Evan
AC9TU

Is there a way to get older versions of the nextion manager? I did noticed that it said that the file was created under an older version.?

After building the uBITX 5 I needed something to house the little electret mic cartridge that came with the kit. I had an old D-104 with a dead element hanging around, so I decided to use that. I get great audio reports from that 10 cent element. The microphone is now bigger than the radio, but it's fun to use. The uBITX drives a Ten Tec Titan II to about 500 watts p.e.p. on 20 meters - more lower and less higher. A lot of fun.? See the picture:

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If you go to Ashhar's git hub site and see from the filename that it is an updated version for a version 6 transceiver just download it to you desktop as an example. Then open the Arduino IDE GUI development environment and use File --> Load the filename and when you get it into the arduino IDE screen it will allow you to view the source code and text etc but when you have the usb connected to the transceiver nano comm port it compiles it and uploads it to the nano then transfers control to the nano if the bootloader is there. Just one note you have to puth the original downloaded file prepared into a folder with the same name as the fielname for it to work. maybe look back in the groups.io messages archives to find the instructions for doing that.

It doesnt work with drag and drop directly you download the github offered file then ensure it is set up in the properly named folder and then point the arduino IDE GUI interface to load or open it. If say you are troubleshooting something and say Reed sends you a hex file with the fix incorporated in it you would save that email attachment to your deskto say, and use the Xloader program gui to send it up to the nano directly without having to go through the arduino ide wui.

no drag and drop isn't part of procedure. Just tell arduino to open/load the file as if you were going to custom code it but don't just then jump to compile/upload to the nano directly. If cable hooked up status message should say upload successful? then disconnect laptop usb cable and do power off reset of the uBITx if all goes well the colored screen should pop up with labelled buttons. do the calibrate and BFO zero beat procedures and it should be off and running. Beware the tuning know is also a momentary push button switch that acts as an ENTER key as it were. If you hold it in on power up it usually will enter the setup screen. If it came up OK to the colored menu and you want to enter the set up menus press the tuning knob to engage the switch and hold it maybe 15 or 20 secs possibly and the display will change to the setup calibrate menu then just follow the prompts.? remember if you want to measure power out levels it has to have a tone audio input of some sort or be in CW mode and you should have it connected to a decent dummy load so you don't interfere with others or cause damage to the finals because of a mismatch.

The USB on the nano board doesn't normall talk to the internet out of the box you have to download and prepare the file then upload it into the nano via the USB port using the Arduino IDE you have installed in your laptop or dektop PC to do it.