Date   
Re: ubitx BFO Calibration issue

Maurice Bersan
 

Raffaello, sorry about the name mix-up before.

The only way I could get my bfo settings to stick was to do the calibration and bfo settings one after the other at the same time. Then when complete turn radio off and back on.
I tuned into a local QSO and set both calibration and bfo so QSO sounded normal. Easy and worked for me, hope this helps.

Maurice

On 20 Nov 2019 4:57 a.m., hardrain@... wrote:

Hi, thanks everybody to begin with, since this group is a source of information and inspiration for my adventures with the little ubitx. Now, I suspect this is a vexata quaestio but as hard as I've searched I haven't found the answer.

I'm trying to calibrate the bfo on my v5.1 with stock firmware. When I find a setting I like I press the knob and the display reads "carrier set". But  the setting was not actually saved, if I re-enter the BFO setting menu I find the original value (and I can hear that the BFO frequency is the old one). What's the correct procedure to save my value?

Thanks and 73,
IZ1HNY Raffaello


Re: ubitx BFO Calibration issue

Maurice Bersan
 

Hardrain, sounds like you probably need to do a factory reset.
Turn the radio off
Then while pressing in and holding the tuning knob turn the power back on.
Follow the on screen instructions.
Sometimes if you get the calibration and bfo to far off its best to just start again.
Good luck

Maurice

On 21 Nov 2019 6:12 a.m., hardrain <hardrain@...> wrote:
Thanks to all those who answered.

Yes, I've now realized that the software reverts back to default value each time BFO cal is reentered, and this makes hard (and a bit frustrating) to proceed by trials and errors since each  time you loose the improvements you have just made. You can't fine tune, unless you take note on paper.
I did so, and after spending a couple of hours hearing noise, whistles and distorted signals in my headphones, I have obtained a setting that allows me to listen to HAM SSB comms, barely readable, quite metallic and ringing but understandable.
Then, I got an idea. I tuned in Shannon Volmet, thinking, now I'll have a stable and continuous signal to adjust my BFO.
No joy. After one hour I could not make it understandable. The signal itself is very strong and clean, but the voice remains totally 'scrambled' and distorted, over the whole BFO adjusting range.
Maybe my ubitx has some other problem, not BFO related. Tomorrow I'll check. Now my eyes are closing ;)

73

Raffaello

PS
I've considered consider the risk of switching to tx, but if I use a dummy load (I've built one) I can't receive the SSB signal I got to use for calibration.

On 19/11/19 22:13, Jim Willis wrote:

Hi Raffaello,

 

I had a similar experience.

 

I think the “set BFO” software starts with the default value. So every time you repeat the BFO calibration, the SW starts with the default. It seems like the previous calibration didn’t “take”.

 

As for clicking the knob vs. the transmit button, the tuner knob seems to work for me.

 

So, try the BFO calibrate procedure and use the tuner knob then listen to a SSB signal. If the SSB signal is still good then all is OK. If this doesn’t work then try the transmit button.

 

Good luck! Love my uBITx – I’ve learned a lot about radio from it!

 

73,

 

Jim KX4TD

 

From: BITX20@groups.io <BITX20@groups.io> On Behalf Of hardrain@...
Sent: Tuesday, November 19, 2019 3:58 PM
To: BITX20@groups.io
Subject: [BITX20] ubitx BFO Calibration issue

 

Hi, thanks everybody to begin with, since this group is a source of information and inspiration for my adventures with the little ubitx. Now, I suspect this is a vexata quaestio but as hard as I've searched I haven't found the answer.

I'm trying to calibrate the bfo on my v5.1 with stock firmware. When I find a setting I like I press the knob and the display reads "carrier set". But  the setting was not actually saved, if I re-enter the BFO setting menu I find the original value (and I can hear that the BFO frequency is the old one). What's the correct procedure to save my value?

Thanks and 73,
IZ1HNY Raffaello



Re: ubitx BFO Calibration issue

hardrain
 

Thanks to all those who answered.

Yes, I've now realized that the software reverts back to default value each time BFO cal is reentered, and this makes hard (and a bit frustrating) to proceed by trials and errors since each  time you loose the improvements you have just made. You can't fine tune, unless you take note on paper.
I did so, and after spending a couple of hours hearing noise, whistles and distorted signals in my headphones, I have obtained a setting that allows me to listen to HAM SSB comms, barely readable, quite metallic and ringing but understandable.
Then, I got an idea. I tuned in Shannon Volmet, thinking, now I'll have a stable and continuous signal to adjust my BFO.
No joy. After one hour I could not make it understandable. The signal itself is very strong and clean, but the voice remains totally 'scrambled' and distorted, over the whole BFO adjusting range.
Maybe my ubitx has some other problem, not BFO related. Tomorrow I'll check. Now my eyes are closing ;)

73

Raffaello

PS
I've considered consider the risk of switching to tx, but if I use a dummy load (I've built one) I can't receive the SSB signal I got to use for calibration.

On 19/11/19 22:13, Jim Willis wrote:

Hi Raffaello,

 

I had a similar experience.

 

I think the “set BFO” software starts with the default value. So every time you repeat the BFO calibration, the SW starts with the default. It seems like the previous calibration didn’t “take”.

 

As for clicking the knob vs. the transmit button, the tuner knob seems to work for me.

 

So, try the BFO calibrate procedure and use the tuner knob then listen to a SSB signal. If the SSB signal is still good then all is OK. If this doesn’t work then try the transmit button.

 

Good luck! Love my uBITx – I’ve learned a lot about radio from it!

 

73,

 

Jim KX4TD

 

From: BITX20@groups.io <BITX20@groups.io> On Behalf Of hardrain@...
Sent: Tuesday, November 19, 2019 3:58 PM
To: BITX20@groups.io
Subject: [BITX20] ubitx BFO Calibration issue

 

Hi, thanks everybody to begin with, since this group is a source of information and inspiration for my adventures with the little ubitx. Now, I suspect this is a vexata quaestio but as hard as I've searched I haven't found the answer.

I'm trying to calibrate the bfo on my v5.1 with stock firmware. When I find a setting I like I press the knob and the display reads "carrier set". But  the setting was not actually saved, if I re-enter the BFO setting menu I find the original value (and I can hear that the BFO frequency is the old one). What's the correct procedure to save my value?

Thanks and 73,
IZ1HNY Raffaello


Re: Ubitx 5.1 software compile errors

Jack, W8TEE
 

You'd be amazed how many times this has been a problem for users.

Jack, W8TEE

On Tuesday, November 19, 2019, 7:27:11 PM EST, paul wegwert <chico.wegwert@...> wrote:


Thank-You, Armin !!!
You were totally right. I changed the second "master" folder to "ubitx_v5.1_code" and opened the same file in that dir. NO ERRORS. There was also another folder inside the second master called "ubitx_v5.1_code" but it only had one file in it called "ubitx_v5.1_code".  I believe this was the one I was using and that's why the errors.

Thanks again. 

,73's

Paul
KD9JYV

--
Jack, W8TEE

Re: Wattmeter kit on eBay

Viktors Miske
 

He has a site on Tinder also. Maybe check rates from there...
https://www.tindie.com/products/NM0S_qrp/qrpometer/

Bitx40

YO8UFO
 

Hello! I was surprised these days to see that Bitx40 is no longer available for sale. I was almost crying... I had a very good experience with uBitx in past and Bitx40 supose to be my new project for New Year. I do admit that uBitx is overwhelming me. I like Bitx40 much more because of the simplicity of the board. My level of understanding electronics is minimal but somehow I feel like Bitx40 is something I can fully understand if I try hard enough. Is there ANY chances to find one in this community? I do appreciate all the answers, guys! YO8UFO.

Re: Wattmeter kit on eBay

Michael Walker
 

$25 sounds fair for shipping.

I have paid more shipping for smaller items, and I also have the same meter by the way.  

Do not forget the shipping  includes more than just the postage on the box there’s time, materials, the packing and whatever the rush shipping cost but it’s charged.  

The test go online and calculate how much it would be to send a similar size box to someone in the US from your QTH. Just pull an address from QRZ and see what it comes up as.

I often use W1AW as a test.  

His shipping costs are certainly cheaper than you grabbing a plane ticket renting a car driving over to his place and then picking it up. :-)

Mike va3mw

On Nov 20, 2019, at 8:55 AM, Gerry Kavanagh via Groups.Io <gerrykav@...> wrote:

Nice, but holy crap $25 shipping to Ireland!

Re: Wattmeter kit on eBay

 

Hi Gerry,

He has his own store too (look him up on QRZ) so it might be cheaper for shipping than eBay because he uses their stupid "Global Shipping Program" which charges handling and over-charges for customs duties and adds extra time for shipping because the package has to go through their depot where they are all opened and inspected.

73,


Mark.

Re: Help needed with KD8CEC memory manager

Evan Hand
 

Niels,

Great idea!  Wish I would have thought of this before I went through my upgrade.  You will still need to update the calibrations, as I believe that the factory defaults are what would be supplied.  

Steps would be to build stock, Calibrate (be sure to have a dummy load), replace Nano, load stock firmware, calibrate with same process, then download the CEC firmware.

That is the good thing about this site, you can always pick up tricks and improvements from the host of people on it.

Thanks, Niels!

73
Evan
AC9TU

Re: Help needed with KD8CEC memory manager

Niels Jalling
 

If you first load the nano with the original ubitx v5 software (from github) and then load the CEC software the frequencies are not way off as they are after just loading the CEC.
PS I compile allways from source.
73
Niels
OZ9NY

Re: Wattmeter kit on eBay

Gerry Kavanagh
 

Nice, but holy crap $25 shipping to Ireland!

Re: Help needed with KD8CEC memory manager

Evan Hand
 

Mike,

The short answer is yes you can.  The long answer is two fold; 
1 - Be sure to get a Nano with the header pins supplied separately and solder them in on what is usually the back side of the Nano.  Check with orientation of the one supplied.
2 - When you program the Nano with the CEC software, the calibration parameters will not be saved.  These are stored in the EEprom, not the flash memory.  You will need to go through the CEC calibration procedure, which is different that the stock procedure. The CEC procedure goes back to the original way of using receive and zero beating a know signal.  The BFO is the same, just remember that the value will be different due to the change in crystal filter. 

Because of point 2, most get frustrated that the Nano reprogramming did not work.  The significant thing is that the BFO is most likely off, and the receiver has very little sensitivity (it is aligned outside of the 11.0555 pass band - check for the exact frequency, I do not have it handy at the moment and the grey matter is getting old).

You can then swap between the two as long as you also change out the display.

73
Evan
AC9TU    

Re: Help needed with KD8CEC memory manager

paul_hvidston
 

For exhibiting the USB serial issue, can't get much simpler than my setup. I'm running a brand-new V5, completely stock, no mods, CEC 1.2 F/W, USB cable direct from Nano to a Windows notebook. The voltage concerns with the uBITX V5 board appear to be primarily the LM386 version (some cannot tolerate >12V), and the dissipation of the Raduino 5-volt regulator. I run 13.8 Volts, and since the LM386 is socketed, if it smokes I'll replace it with a a known higher voltage version (LM386N-4).

Since I have a bunch of Nano's on hand, I plan on loading up the W0EB/W2CTX ubitx_V2_00R F/W in one and playing with it.

72 de Paul/N6MGN

Re: Help needed with KD8CEC memory manager

paul wegwert
 

Mike,

Did just that today. I obtained 3 Nanos as spares, programed one to CEC's ver. 1.20 . Removed the original Nano and replaced it with no problems. I put the 'stock' Nano in a protective container and marked it as ubitx 5.1 just in case.

Have fun,

Paul 
KD9JYV

Re: Help needed with KD8CEC memory manager

Mike WA0YCN
 

Evan,

I have a Nextion waiting to be installed, but I’m working on finishing with the stock 2 line display and software from HF Signals first.  Watching all these discussions, I’m fearful I will make a mistake programming and not be operable for a while.  I purchased a spare Nano, wondering if I could pull the one that came with the ubitx, put the new one in, then be able to put the original Nano back in if there’s a problem. Am I oversimplifying things?  :)

Thanks,

Mike

Re: THANK YOU FOR HELP

KG5YUO
 


--
"A positive attitude may not solve all your problems, but it will annoy enough people to make it worth the effort."

Re: ubitx BFO Calibration issue

Evan Hand
 

One other ting to try is power cycling the uBITX between calibrations.  The BFO setting is read from EEprom on startup.  I follow the seting, then immediately power cycle and then test (not going back into calibration, as that will reset to the factory default as was said prior).

Be sure to be careful when going into calibration mode with stock v5 software, as if you mistakenly go into the master clock calibration you will trigger the transmitter and can blow your finals if not connected to a dummy load or 10MHz resonant antenna (not common from my experience).  Would strongly suggest investment in a 10 watt or greater dummy load.  QRPLabs makes a 20 watt kit that is reasonable.

http://shop.qrp-labs.com/dummy?search=dummy%20load

73
Evan
AC9TU

Re: Help needed with KD8CEC memory manager

Evan Hand
 

I have a v5 with a 3.2 " Nextion and CEC version 1.2.  I do not have the Memory Manager version as I am on the road for business right now.  With the above I have been able to directly connect to the Nano with the MicroUSB cable direct to the Nano port.  When I read about running cables to the rear panel, I wander if there is another factor in the mix, like a case with rear connectors and/or aux boards for ease of wiring.  To really know where the issue is,  we need to list all of the non-HFSignals mods in addition to the CEC mod so that the problem can be clearly defined.  I have read of multiple threads where the issue was traced to a case mod that gets between the uBitx board and the rest of the world.

With the above understanding, PLEASE be sure to list ALL non-stock mods so that we can compare apples to apples.  It may be that there is a know issue with something as simple as a wiring error on a case kit that has come up in the recent topics.  This type of problem can only be solved if all of the information about the rig is known. 

Now to better articulate my setup, It is all stock EXCEPT for the CEC/Nextion display AND a power drop resistor on the 12 volt line feeding the 5volt regulator on the Raduino board.  There is a know power issue with running the stock Raduino board with more than a 2.8" Nextion display.  The total power required is more than the regulator can handle with more than 12 volts suppiled to the the main board (the PA can be higher with out this issue).  I also added two 1n4xxx diodes between the 13.8 volts supplied by my power supply and the RED wire on the uBITX board.  This was done to keep the voltage supplied to the main board close to 12 volts (i have since measured 11.9 volts under power).

I have gone to this level of detail to explain my setup to give you an example of the level of detail that is needed for us to help.  We have not all used the same setup when building our rigs.

Apologize on being long winded on the need for details, however it is for your best interest.  Wrong information can lead to wrong diagnosis and ultimate board failures.

73
Evan
AC9TU

Re: Ubitx 5.1 software compile errors

paul wegwert
 

BTY I am using the same software as Matt.

Paul

Re: Ubitx 5.1 software compile errors

paul wegwert
 

Thank-You, Armin !!!
You were totally right. I changed the second "master" folder to "ubitx_v5.1_code" and opened the same file in that dir. NO ERRORS. There was also another folder inside the second master called "ubitx_v5.1_code" but it only had one file in it called "ubitx_v5.1_code".  I believe this was the one I was using and that's why the errors.

Thanks again. 

,73's

Paul
KD9JYV