Date   
Re: KD8CEC - Nextion Display - IAN questions

Ian Lee
 

Michael

Thanks for your suggestion.
i will implement them before the beta version is over.

Ian KD8CEC


2018-06-25 11:04 GMT+09:00 Michael Babineau <mbabineau.ve3wmb@...>:

Ian : 

I am very impressed with KB8CEC v1.094, this plus the Nextion Display is a real game changer for the uBITX ! 
It feels like I am now using a new radio ;-) 

Can I make a suggestion for some future enhancements ?

1) Make the Tuning Step an on-screen button so that tapping on it will allow the selection of the tuning step.
 
   This is something that anyone using both CW and SSB will want to change all the time and it is difficult to get at currently.

2) Provide an on-screen button to access the CW settings.
   Things like offset and break-in delay don't get changed very often but  CW operators who are using Iambic keying
   need to be able to quickly change code speed . Also many of us use both paddles and straight keys so it would also be nice to
   able to quickly access selection that from the display. This also makes adjusting an antenna tuner simpler if you can switch
  from Iambic to Straight Key and push the DIT paddle to generate a carrier. 

One thought is that you might be able to make it context sensitive so that buttons specific to CW operation only appear when the mode is CWU or CWL ? 
Just a thought. 

Thanks for all of the great work on this !

Cheers

Michael VE3WMB 



--
Best 73
KD8CEC / Ph.D ian lee
kd8cec@...
www.hamskey.com (my blog)

Re: uBTIX Nextion Display and microSD card woes #ubitx

Mark M
 

Another thing to watch out for, at least it's something that has caused me some grief at times when loading the tft files on various displays...

You may get a message on the display that the load failed because there is more than one .tft file on the SD card but when you look you see only one. You need to be sure to enable viewing hidden files in file explorer (Windows) or finder (on a Mac)...there's probably one with the .tft suffix that you need to delete. I don't think either one of them will show hidden files by default. Not sure about Linux.

The 1G SD card I had was plenty big for the tft file.

Anyway, HTH Mark... AA7TA

On 6/24/18 7:32 PM, Michael Babineau wrote:
I just want to pass on some discoveries I made today while upgrading my uBTIX to run KD8CEC V1.094 with a 2.8' Nextion Display.
...

Re: uBTIX Nextion Display and microSD card woes #ubitx

Keven Pittsinger
 

Linux doesn't show hidden files by default.  But you can see them by typing:

ls -al

in a terminal window when you're in the directory you want to examine.  To hide a file, rename it with a dot ('.') as the first character.

On Sun, Jun 24, 2018 at 8:49 PM, Mark M <junquemaile@...> wrote:
Another thing to watch out for, at least it's something that has caused me some grief at times when loading the tft files on various displays...

You may get a message on the display that the load failed because there is more than one .tft file on the SD card but when you look you see only one. You need to be sure to enable viewing hidden files in file explorer (Windows) or finder (on a Mac)...there's probably one with the .tft suffix that you need to delete. I don't think either one of them will show hidden files by default. Not sure about Linux.

The 1G SD card I had was plenty big for the tft file.

Anyway, HTH      Mark...     AA7TA

On 6/24/18 7:32 PM, Michael Babineau wrote:
I just want to pass on some discoveries I made today while upgrading my uBTIX to run KD8CEC V1.094 with a 2.8' Nextion Display.

 ...




Re: Rx Radio #ubitx-help

Mike aka KC2WVB <rb5363@...>
 

Yes, the UBitx is a nice piece of engineering. Hats off to the developers.

For myself, I don't listen to AM broadcasts for their music content rather I listen to the BBC and other foreign stations to hear views from abroad. 

A long time ago an EE friend of mine introduced me to reel to reel half speed masters and I was a convert the moment I heard the difference. I still remember how startled I was by what I had been missing. The tapes of course are pretty much a thing of the past so I had to make a choice between vinyl or a digital format such as the Sony/Phillips Super Audio CD. I chose the later and it offers some nice advantages over vinyl in that you can turn compression off and experience the full dynamic range of the music being played. Of course no format will sound good if the sound engineering is lackluster so buyer beware is always a consideration prior to spending upwards to $30 on a purchase.

It's too bad in my opinion that quality in music reproduction has seemed to take a back seat to other interests and it is certainly an area where newer is not equivalent to acoustically better. I am just thankful that there are enough audiophiles to allow quality to still be available.

On Sat, Jun 23, 2018, 5:15 AM iz oos <and2oosiz2@...> wrote:

The frequency response of the second IF filters of the Ubitx vary from unit to unit depending also where the BFO is set. My unit for example is about 2khz wide filtering out frequencies below 700hz. This it is very good for speech either ssb or AM/CW. In general the less selective/worse the receiver is the better and the less fatiguing is the listening to AM broadcasts. For AM those large ugly portables with HF shine. The Ubitx sounds more a communication or military receiver, at least my unit. In general a 6khz wide filter allow just 3khz frequency response, which is not much more than the usual Ubitx. If the receiver has a passband offset control (PBT) you can possibly recover all the 6khz. In any case most large portable that have no PBT, the filter is so wide you have a more pleasant audio. To have that wide filters in the Ubitx maybe one could remove most of the crystals in the second IF.


Il 23/giu/2018 00:09, "Ralph Mowery" <rmowery42@...> ha scritto:
I did not really do much in the way of calculating.  I do have the equipment to check it our.  One way was to feed in a 1000 Hz audio tone into the mic input.  Then measure the output power.  Then go up and down in frequency to where the power makes a big drop off.  

I know that by lowering the value of the capacitors the filter gets wider and going up in value the filter gets narrower.  The first attempt was around 68 pf (or whatever the standard value is near that).  That made the filter way too wide,so I put in the 80 some and that put it close enough for me.

Even going into a hifi amp it will be difficult to make the music sound very good.  If the filter cuts out the highs and lows before it gets to the demodulation part, about all you can do is use an  equalizer and run the audio from less than 500 hz way up and the audio above 1800 way up as there is almost no audio outside 500 hz to 1800 hz.

As the ubitx is, it is a great piece of engineering, but it is also easy to make changes to for anyone that has a bit of equipment and know how.  Many have published their modifications so that people like me only need to do them.

de ku4pt


On Fri, Jun 22, 2018 at 5:41 PM, Mike aka KC2WVB <rb5363@...> wrote:
Ralph, 
Thanks, you did the calculations so a change is now simply swap out. I knew the filter was narrow but not that narrow. I guess they aimed at between ideal for CW and SSB by selecting as is. 
I don't have the stuff required for guaranteeing success when swapping out surface mounted capacitors. If I did I might make the change. 
I run my audio into the line in on a hi-fi system and can make the AM sound well enough to listen to by making audio adjustments, but I can see where it would be a pain in the arse to listen to the AM off a tiny 8 ohm speaker especially when it's frequency range is limited like it is.

On Jun 22, 2018 4:16 PM, "Ralph Mowery" <rmowery42@...> wrote:
While most AM is set up for a 6 KHz of audio, a side band filter of slightly over 2 KHz will usually allow voice through well enough to be understood.  The music will sound clipped or somewhat distorted as it often has higher audio frequencies than  most taking voices.

The filter in most of the ubitx is really too narrow to suit me as I only operate ssb with it.  I changed out the 5  100pf capacitors in the crystal filter to 82 pf ( I think that is the standard value).  That broadened the filter in my ubitx from about 1700 hz to about 2300 hz.  Makes the audio sound much better for me.

One thing not discussed is that while AM often has the 6 khz filter, it only needs to be about half that when using a ssb filter as you are only using one sideband instead of both .  So around 3 khz would be good for AM.

de ku4pt


Re: IRF510

Skip Davis
 

Howard do you need some 510’s , I’ll trade a few for some more of those caps and inductors for the driver mod. I got another board that needs them. 

Skip Davis, NC9O

On Jun 24, 2018, at 22:53, Howard Fidel <sonic1@...> wrote:

They are obsolete. Just had them lying around like you do.

Howard



On 6/24/2018 10:12 PM, ajparent1/KB1GMX wrote:
Early Dmos parts.  They are good, I still have some in the collection along with
VN66ak and a few VMP4s.  Whos selling them now?

Allison


Re: Programming Issues and Questions

Peter Aiea
 

For what its worth, I had a similar error (function does not return a value) on the macbook. The same code compiled on the win10 system. Updating the arduino ide for the mac to the latest version resolved the compile error.


On Sun, Jun 24, 2018, 20:02 Howard Fidel <sonic1@...> wrote:
Jack:
That helps, but now I get other errors. There are also lots of warnings.

invalid conversion from 'const byte* {aka const unsigned char*}' to 'uint8_t* {aka unsigned char*}' [-fpermissive]

Howard



On 6/24/2018 10:14 PM, Jack Purdum via Groups.Io wrote:
I don't think Farhan meant to return anything from the function. As a test, change the function's signature from:

   int menuBand(int btn){

to

   void menuBand(int btn){

and see what happens. I didn't see any statements in any of the files where a return value from menuBand() is used in an assignment statement, so it should be OK using void.

Jack, W8TEE

On Sunday, June 24, 2018, 5:45:04 PM EDT, Howard Fidel <sonic1@...> wrote:


I am integrating my uBitx into an old HA 350 receiver  chassis. It has a band switch on it, so I want to program A7 to read the switch. I downloaded several different versions of code to find a good starting point. When I use any of Farhan's versions, I get a compile error: 
return-statement with no value, in function returning 'int' [-fpermissive]
 
It is a return in ubitx_menu in the if(!btn) statement that causes this.

I tried Ron, W2CTX's ubitx_V2_00R and i see what looks like coding errors, although it compiles. The error is that A7 is not declared, and digital dash is declared as A3. A3 is PTT
KD8CEC's uBitx_20 compiles. 

Any input on which code is best would be appreciated. I would also like to know how to fix the compiling error so I can reinstall the factory code if I need to.

Thanks,

Howard


Bitx40 75KHz Spurious, How to solve it. #bitx40

jj1epe@...
 

Hi!

I built Bitx40 about 2 weeks ago.
 
I measured the spurious of Bitx40 by using the spectrum analyzer.
The level of spurious of harmonics were under 50db. So this is fine.
But the spurious at 75KHz was observed.
The spurious might be the multiple of 25KHz.
It would be much appreciated if you could advise  me the cause and solution of this spurious of Bitx40.

In Japan, we must prove to the authority that the spurious of the transceiver meets the criteria to obtain the certification of the transceiver from the authority.
So if i could not resolve this spurious, I will not be able to use Bitx40 in Japan.

Thanks in advance,
Akira
JJ1EPE

Re: Bitx40 75KHz Spurious, How to solve it. #bitx40

MVS Sarma
 

how did you power it - by smps wall wart mor linear  or just a battery?

regards
sarma
 vu3zmv

Regards
MVS Sarma
 

On Mon, Jun 25, 2018 at 12:39 PM, <jj1epe@...> wrote:
Hi!

I built Bitx40 about 2 weeks ago.
 
I measured the spurious of Bitx40 by using the spectrum analyzer.
The level of spurious of harmonics were under 50db. So this is fine.
But the spurious at 75KHz was observed.
The spurious might be the multiple of 25KHz.
It would be much appreciated if you could advise  me the cause and solution of this spurious of Bitx40.

In Japan, we must prove to the authority that the spurious of the transceiver meets the criteria to obtain the certification of the transceiver from the authority.
So if i could not resolve this spurious, I will not be able to use Bitx40 in Japan.

Thanks in advance,
Akira
JJ1EPE


Re: RFI from uBitx TX after AGC and other mods installed

MVS Sarma
 

IMHO, small interconnections, you need both sides ground.
Earlier in telecom we used balance twin wire cable with shield.
 There we used to ground at one  end and  if some one grounds at both ends, the shielding was lost and some longitudinal current were said to be flowing through shield . In such cases, only one side Gnd was recommended.
  But here the shield is a return conductor also.


Regards
MVS Sarma
 

On Mon, Jun 25, 2018 at 6:49 AM, RowlandA <rarcher@...> wrote:
Thanks Don, I'll try some RG-174 then.  I might not have time until Wednesday, flying out tomorrow for a two day trip, but will report back when I try it.

I assume one coax with shield to ground at both ends - unlike the RF gain control coax, which is two coax cables, grounded at the pot end but shields not connected at the AGC board.  Let me know if that's not right.

73,
Rowland K4XD


Re: Keypad for Raduino...?

GM4CID
 

The 16 key TTP229 capacitive touch keypad might be worth considering as an easy low cost external keyboard solution for the uBitx,
it worked well for me on another Arduino project

See http://hobbycomponents.com/sensors/585-ttp229-16-key-capacitive-keypad

Another interesting possibility is using an Android phone or tablet as a touch screen controller
communicating bluetooth to a module at the uBitx.

73 Bob GM4CID

Re: Keypad for Raduino...?

Mike Woods
 

I have one of these keypads (which includes a resistor matrix  built in for connecting to an analogue pin)

https://robotdyn.com/button-keypad-4x4-module.html

I have yet to deploy it ... a future project.

Robotdyn also has an i2c controller for capacitive keys and the associated keypad

https://www.aliexpress.com/item/16-Keys-Capacitive-touch-TTP229-module-I2C-bus/32672496161.html
https://www.aliexpress.com/item/Capacitive-Touch-keypad-for-Capacitive-module-16-keys/32673211969.html

Mike ZL1AXG

On 25/06/18 9:11 PM, Robert McClements wrote:
The 16 key TTP229 capacitive touch keypad might be worth considering as an easy low cost external keyboard solution for the uBitx,
it worked well for me on another Arduino project

See http://hobbycomponents.com/sensors/585-ttp229-16-key-capacitive-keypad

Another interesting possibility is using an Android phone or tablet as a touch screen controller
communicating bluetooth to a module at the uBitx.

73 Bob GM4CID


--
Mike Woods
mhwoods@...

Re: ubitx code version 4.3 for review, testing

Martin FKK
 

Thanks for answering Craig Jack - I've been wondering about that for a few days :)  You learn something new every day.

Martin - G4FKK

Re: IRF510

Howard Fidel
 

Skip:
Thanks for the offer. I just ordered them from Mouser, but I probably won't change them. Just send me another SASE I will send you more parts.

Howard


On 6/25/2018 1:58 AM, Skip Davis via Groups.Io wrote:
Howard do you need some 510’s , I’ll trade a few for some more of those caps and inductors for the driver mod. I got another board that needs them. 

Skip Davis, NC9O

On Jun 24, 2018, at 22:53, Howard Fidel <sonic1@...> wrote:

They are obsolete. Just had them lying around like you do.

Howard



On 6/24/2018 10:12 PM, ajparent1/KB1GMX wrote:
Early Dmos parts.  They are good, I still have some in the collection along with
VN66ak and a few VMP4s.  Whos selling them now?

Allison



Re: ubitx code version 4.3 for review, testing

Craig Wadsworth <cwadsworth@...>
 

Jack:
Many thanks! I have a few days off work this week and plan to spend some time on your Beginning C for Arduino 2nd ed.
Regards,
Craig
w9ctw

Re: Programming Issues and Questions

Howard Fidel
 

Peter:
That did it, thanks. I should have remembered that myself, not the first time I experienced it.

Howard

On 6/25/2018 1:59 AM, Peter Aiea wrote:
For what its worth, I had a similar error (function does not return a value) on the macbook. The same code compiled on the win10 system. Updating the arduino ide for the mac to the latest version resolved the compile error.

On Sun, Jun 24, 2018, 20:02 Howard Fidel <sonic1@...> wrote:
Jack:
That helps, but now I get other errors. There are also lots of warnings.

invalid conversion from 'const byte* {aka const unsigned char*}' to 'uint8_t* {aka unsigned char*}' [-fpermissive]

Howard



On 6/24/2018 10:14 PM, Jack Purdum via Groups.Io wrote:
I don't think Farhan meant to return anything from the function. As a test, change the function's signature from:

   int menuBand(int btn){

to

   void menuBand(int btn){

and see what happens. I didn't see any statements in any of the files where a return value from menuBand() is used in an assignment statement, so it should be OK using void.

Jack, W8TEE

On Sunday, June 24, 2018, 5:45:04 PM EDT, Howard Fidel <sonic1@...> wrote:


I am integrating my uBitx into an old HA 350 receiver  chassis. It has a band switch on it, so I want to program A7 to read the switch. I downloaded several different versions of code to find a good starting point. When I use any of Farhan's versions, I get a compile error: 
return-statement with no value, in function returning 'int' [-fpermissive]
 
It is a return in ubitx_menu in the if(!btn) statement that causes this.

I tried Ron, W2CTX's ubitx_V2_00R and i see what looks like coding errors, although it compiles. The error is that A7 is not declared, and digital dash is declared as A3. A3 is PTT
KD8CEC's uBitx_20 compiles. 

Any input on which code is best would be appreciated. I would also like to know how to fix the compiling error so I can reinstall the factory code if I need to.

Thanks,

Howard



Re: Programming Issues and Questions

Howard Fidel
 

Okay, now it compiles, but it doesn't recognize the Arduino. I installed the CH340 driver, but it didn't help. Anything else I am missing?

Howard


On 6/25/2018 8:12 AM, Howard Fidel wrote:
Peter:
That did it, thanks. I should have remembered that myself, not the first time I experienced it.

Howard

On 6/25/2018 1:59 AM, Peter Aiea wrote:
For what its worth, I had a similar error (function does not return a value) on the macbook. The same code compiled on the win10 system. Updating the arduino ide for the mac to the latest version resolved the compile error.

On Sun, Jun 24, 2018, 20:02 Howard Fidel <sonic1@...> wrote:
Jack:
That helps, but now I get other errors. There are also lots of warnings.

invalid conversion from 'const byte* {aka const unsigned char*}' to 'uint8_t* {aka unsigned char*}' [-fpermissive]

Howard



On 6/24/2018 10:14 PM, Jack Purdum via Groups.Io wrote:
I don't think Farhan meant to return anything from the function. As a test, change the function's signature from:

   int menuBand(int btn){

to

   void menuBand(int btn){

and see what happens. I didn't see any statements in any of the files where a return value from menuBand() is used in an assignment statement, so it should be OK using void.

Jack, W8TEE

On Sunday, June 24, 2018, 5:45:04 PM EDT, Howard Fidel <sonic1@...> wrote:


I am integrating my uBitx into an old HA 350 receiver  chassis. It has a band switch on it, so I want to program A7 to read the switch. I downloaded several different versions of code to find a good starting point. When I use any of Farhan's versions, I get a compile error: 
return-statement with no value, in function returning 'int' [-fpermissive]
 
It is a return in ubitx_menu in the if(!btn) statement that causes this.

I tried Ron, W2CTX's ubitx_V2_00R and i see what looks like coding errors, although it compiles. The error is that A7 is not declared, and digital dash is declared as A3. A3 is PTT
KD8CEC's uBitx_20 compiles. 

Any input on which code is best would be appreciated. I would also like to know how to fix the compiling error so I can reinstall the factory code if I need to.

Thanks,

Howard




Re: Programming Issues and Questions

Howard Fidel
 

Got it working! Seems like a bad connection on the mini USB connector.

On 6/25/2018 8:48 AM, Howard Fidel wrote:
Okay, now it compiles, but it doesn't recognize the Arduino. I installed the CH340 driver, but it didn't help. Anything else I am missing?

Howard


On 6/25/2018 8:12 AM, Howard Fidel wrote:
Peter:
That did it, thanks. I should have remembered that myself, not the first time I experienced it.

Howard

On 6/25/2018 1:59 AM, Peter Aiea wrote:
For what its worth, I had a similar error (function does not return a value) on the macbook. The same code compiled on the win10 system. Updating the arduino ide for the mac to the latest version resolved the compile error.

On Sun, Jun 24, 2018, 20:02 Howard Fidel <sonic1@...> wrote:
Jack:
That helps, but now I get other errors. There are also lots of warnings.

invalid conversion from 'const byte* {aka const unsigned char*}' to 'uint8_t* {aka unsigned char*}' [-fpermissive]

Howard



On 6/24/2018 10:14 PM, Jack Purdum via Groups.Io wrote:
I don't think Farhan meant to return anything from the function. As a test, change the function's signature from:

   int menuBand(int btn){

to

   void menuBand(int btn){

and see what happens. I didn't see any statements in any of the files where a return value from menuBand() is used in an assignment statement, so it should be OK using void.

Jack, W8TEE

On Sunday, June 24, 2018, 5:45:04 PM EDT, Howard Fidel <sonic1@...> wrote:


I am integrating my uBitx into an old HA 350 receiver  chassis. It has a band switch on it, so I want to program A7 to read the switch. I downloaded several different versions of code to find a good starting point. When I use any of Farhan's versions, I get a compile error: 
return-statement with no value, in function returning 'int' [-fpermissive]
 
It is a return in ubitx_menu in the if(!btn) statement that causes this.

I tried Ron, W2CTX's ubitx_V2_00R and i see what looks like coding errors, although it compiles. The error is that A7 is not declared, and digital dash is declared as A3. A3 is PTT
KD8CEC's uBitx_20 compiles. 

Any input on which code is best would be appreciated. I would also like to know how to fix the compiling error so I can reinstall the factory code if I need to.

Thanks,

Howard





Re: RFI from uBitx TX after AGC and other mods installed

Don, ND6T
 

Yes, you are both quite correct. Ground both ends of this connection. -Don

Re: RFI from uBitx TX after AGC and other mods installed

RowlandA
 

Hi Don - I tried a small RG174 cable and unfortunately it didn't solve the RFI problem.  Still getting a very strong garbled RFI when I transmit SSB and the audio cable is connected.  Grounded at both the pot end and the AGC board, with the center of the coax going to the hot side of the pot (not the wiper).  

Same problem with TX into a dummy load or antenna.  

Not sure what to try next unless I move the AGC board towards the front of the enclosure and redo the cabling.  I guess it's hard to know where the RF is coming from so I know the best way to route the cables to avoid it?

Any other thoughts?  Is anyone successfully using the AGC kit mounted at the tap point of the RF trace and Sunil's enclosure?  Maybe a photo showing cabling for a successful install would help.

73,
Rowland K4XD

Re: uBTIX Nextion Display and microSD card woes #ubitx

Bill Cromwell <wrcromwell@...>
 

Or <ctl>h

73,

Bill

On 06/25/2018 12:07 AM, Keven Pittsinger wrote:
Linux doesn't show hidden files by default. But you can see them by typing:

ls -al
--
bark less - wag more