Date   

Re: CeC Firmware

Evan Hand
 

Rajesh,
Are you using the stock 16x2 display?  Did it work before you loaded the CEC software?

I would check connections.  You may have disturbed something when connecting the USB cable to the Nano.  If it were a software problem, the screen would light up, but be blank or show gray squares.

As to your question of which screen to use, that would depend on what size you would like and if you want the graphical interface.  There are versions of the Nextion tft files for most all of the screen sizes available.  For a graphic screen, the software will only work with a Nextion screen, as it relies on the processor in the display to do some of the GUI functions.  My favorite choice is the 3.5" Enhanced display  NX4832K035.  I have not tried the larger (above 2.8") size Basic version, as they do not have as much memory, and the larger the screen size the more memory is required (the screens are bit maps, so larger display means more memory to store a single screen).  I have not tried the very large versions (5" and larger), as they require a significant amount of 5votl power, and probably a separate 5volt source or a better 5volt regulator with dropping resistor and heatsink.

I do not have experience with the non-graphic screens other than the stock 16x2 parallel screen.  For an original stock screen to work, you do need to use the file:
UBITX_CEC_V1.200_16P.hex

Here is the file FileNameInfo.txt printed from the uBITXV234 part of the zip archive.:

Start Print =======================================================================================================
http://www.hamskey.com/2018/04/various-lcd-support-in-ubitx-with.html
 
prefix   : UBITX_CEC_
Version  : Vxxxx (ex: V1.097)
LCD Type : _XXX  (ex: 16x02 Parallel = 16P, 20x04 Parallel = 20P, 20x04 I2C = 20I, Nextion LCD = NX)
Signal Meter Type (Option) : none : Analaog Meter using A7 PIN
                             _S   : I2C Signal Meter using I2C Port
 
UBITX_CEC_Vxxxxx_16P.hex    : It is the LCD equipped with uBITX. Default LCD, 16x02 Parallel LCD
UBITX_CEC_Vxxxxx_16P_S.hex  : _16P with I2C Meter
 
 
UBITX_CEC_Vxxxxx_16I.hex    : 16x02 I2C LCD
UBITX_CEC_Vxxxxx_16I_S.hex  : _16I with I2C Meter
 
 
UBITX_CEC_Vxxxxx_20P.hex    : 20x04 Parallel LCD
UBITX_CEC_Vxxxxx_20P_S.hex  : _20P with I2C Meter
 
 
UBITX_CEC_Vxxxxx_20I.hex    : 20x04 I2C LCD
UBITX_CEC_Vxxxxx_20I_S.hex  : _20I with I2C Meter
 
UBITX_CEC_Vxxxxx_16D.hex    : 16x02 I2C Dual LCD
UBITX_CEC_Vxxxxx_16D_S.hex  : _16D with I2C Meter
 
UBITX_CEC_Vxxxxx_NX.hex     : Nextion LCD
UBITX_CEC_Vxxxxx_NX_S.hex   : _NX with I2C Meter
End Print =======================================================================================================

The above is the best information that I have.
73
Evan
AC9TU


CeC Firmware

rajesh huddar
 

Hi,

Have installed the cec 1.20 firmware on ubitx ver 3. Display does not.light up. 
What could be the problem?

There are multiple LCD displays mentioned,  which one is to be selected.

Inputs will be of great help.

Thanks

Rajesh
VU3RHU




Re: UBITX use with 144 MHz transverter

Michel Dupuy
 

Yes, that's exactly what I would like to do, if it's possible, it's just for fun, because already it works very well. We have to find a new challenge.


Re: UBITX use with 144 MHz transverter

MVS Sarma
 

Good effort.
 I an not a coding personat all
I suppose that we  can do this way. before the line which displays the frequency add a clause, using a  spare pin..
 if the pin is high
  add a fixed value to the display value and then display. otherwise normal
perhaps the length of the characters on display line may have to be increased.
I wonder whether it is possible that this check can be restricted to only 10m and not every band.


On Sun, Jul 5, 2020 at 10:21 AM Michel Dupuy <82f1gtx@...> wrote:
Hello, OK for the UT5JCW tranverter, no problem the frequency is good to within 200 hertz. for the output power I lowered it from 10W to 3W because I have behind an amplifier of 100W. as for the modification no problems if I found on which line is the display of the frequency that I want to modify to make it write 144000 when I am on 28000 only and not modify for the other bands. Thank you for everything.


Re: UBITX use with 144 MHz transverter

Michel Dupuy
 

Hello, OK for the UT5JCW tranverter, no problem the frequency is good to within 200 hertz. for the output power I lowered it from 10W to 3W because I have behind an amplifier of 100W. as for the modification no problems if I found on which line is the display of the frequency that I want to modify to make it write 144000 when I am on 28000 only and not modify for the other bands. Thank you for everything.


Re: Delivery Report

Bob Lunsford
 

I sent something from Kentucky to Michigan by USPS on a Thursday/Friday and was promised it would arrive the following Tuesday. Then the USPS tracking tool advised that because of the Corinavirus confusion, it would be delayed. It arrived the following Friday/Saturday. All things considered, delivery times may be bad but not unreasonable.

My uncle was a USPS mail sorter on a train between Knoxville and Cincinnati for many years. He once commented: "I don't know why people complain about the mail, where else in the world can you get a letter delivered for a penny a day?" Then he laughed.

Bob — KK5R

On Saturday, July 4, 2020, 7:46:10 PM EDT, John KG9DK <jab3739@...> wrote:


Greetings all, I thought I would share my delivery time.  I ordered the uBtix V6 w/ case on 6/21/20 and received it on 7/3/20, that is about twelve days, not to bad considering the world status at the moment.  
John kg9dk


Delivery Report

John KG9DK
 

Greetings all, I thought I would share my delivery time.  I ordered the uBtix V6 w/ case on 6/21/20 and received it on 7/3/20, that is about twelve days, not to bad considering the world status at the moment.  
John kg9dk


Re: Last effort before it is scrapped.....

Bob Lunsford
 

Changing antennas making it perform OK may indicate that you had high SWR on the other antenna/s. The RF could have caused feedback and received distortion. You may want to recheck the SWR on the other antenna/s.

Bob — KK5R

On Saturday, July 4, 2020, 9:12:20 AM EDT, McRuss via groups.io <wtrrtw@...> wrote:


OK, I'm frustrated with the V6.  I'm not very technical but I've followed along for a while.  My issue NOW is that I can't get the audio 'clean.'  I've done the BFO tune twice and on 20m it was fair.  But I had a problem with the TX sticking (stock kit mike).  I switched my antenna to 40 and now I don't seem to have the TX problem but I can not get a clean audio (voice) signal.  Reminds me of the old CB days where we used a 'clarifier' to tune the SSB rigs.  Except I can't tune this thing!
--
Russ
K5FJR


Re: Trustworthy 2N2222A?

Ted
 

Hi, Peter.

I'm sorry for the delayed response. Please don't take it as a lack of interest in helping. 

I added a 22-ohm resistor to the bias resistors recommended in the case of other transistor swaps, i.e. R87 in the pre-driver, etc. Without the schematic handy, I'm hesitant to name all three instances where this is done but it's essentially the same bias change as if 2N2222's had been swapped for the 3904's. 

Another user a while back suggested simply going parallel with the similar, now disused resistor next to it i.e.R88 for the same objective.  That is, shunting across the non-grounded side of R87 & R88 is the same as nailing a second resistor on top of R87 - and it's easier.  So, that's one way you can do the bias adjustment when replacing two 3904's with one 5109.

About those finals: Note that the motherboard has been Dremmeled out a little behind the finals, to make room for a heat sink arrangement inside a steel hard drive case. I messed up and also let out the magic smoke from the original finals besides. My de-soldering skills are terrible and I also have nerve damage affecting my hands, and so you're looking at a poor repair, there. It is not pretty.... the radio works, though. 😊


Best of luck, Peter, and do feel free to write again if I can help.



-Ted




Re: UBITX use with 144 MHz transverter

Robert D. Bowers
 

No problem... and I'm going to (when I get the chance) convert an old BitX20 I built to 10m for use with one of those transverters.

I might mention that I've got one of those 144 boards and a 440 (pre-assembled) unit.  I found that the Transverter conversion was slightly off - I'd suggest using a frequency counter and put a known frequency CW signal into the transverter - and measure the output frequency.  That way you know what the offset really is.  Then whatever you get on the dial, will be what you transmit on 2.  If you learn how to mod the programming - you can always go back and make the display accurate to what is transmitted!

28.1 = 50.1, 144.1, and 432.1 on the transverters, plus or minus a tiny bit.  The big thing is not to overpower the front end - if you get a transverter with the power divider board (reduces the signal to an appropriate level for the actual transverter board), make sure you NEVER go more than 10w PEP, and if you run 5 (even 1), that's great.  IMO, a BitX would be the ideal radio for one of those (Ukrainian) transverters!

(You don't need or even want to get every milliwatt out of the finals anyway.)

Bob
N4FBZ

On 7/4/20 4:54 AM, Michel Dupuy wrote:
Hello, is it possible when I use the uBITX with a 28/144 Mhz transverter to display instead of 28.300 the frequency of 144.300 for example. Thank you for my question which may be impossible. Thank you so much.


Re: UBITX use with 144 MHz transverter

Arv Evans
 

Michel

Changing the frequency display to accommodate a transverter should 
be rather easy.  Frequency display is already a calculated offset to 
accommodate the IF frequency.  You would need another calculation 
to multiple the HF frequency display according to the transverter offset.
Probably just one line of code.

Arv
_._

On Sat, Jul 4, 2020 at 2:55 AM Michel Dupuy <82f1gtx@...> wrote:
Hello, is it possible when I use the uBITX with a 28/144 Mhz transverter to display instead of 28.300 the frequency of 144.300 for example. Thank you for my question which may be impossible. Thank you so much.


Re: UBITX use with 144 MHz transverter

MadRadioModder
 

Well that’s why we all buy kits like the uBITx … to gain knowledge.  Good time maybe to learn a little bit about the Arduino.  Remember you can always reload the original code if you really mess it up.

 

 

From: BITX20@groups.io [mailto:BITX20@groups.io] On Behalf Of Michel Dupuy
Sent: Saturday, July 4, 2020 7:13 AM
To: BITX20@groups.io
Subject: Re: [BITX20] UBITX use with 144 MHz transverter

 

Yes but I am not knowledgeable enough to modify the code of KD8CEC version 1.2. I would like if it is possible that when I am on 28MHz the display shows 144MHz. It's just for fun, the transverter works very well, it's a UT5JCW assembly. Thank you.


Virus-free. www.avg.com

--

…_. _._


Re: Last effort before it is scrapped.....

Evan Hand
 

McRuss,
Is the audio problem on receive or transmit?

If on transmit, then the suggestions by Gordon are the first step.  Then go to the final BFO calibration in the 3 step process of Ashhar Farhan's video (see link below)

If on Recieve, then be sure to follow all three steps in the video.
https://www.youtube.com/watch?v=t6LGXhS4_O8

Note: The reason for the three steps in the calibration process is that the first BFO setting is being set to allow for optimum zero beating.  You need the low-frequency response to hear the zero beat as you get closer to the correct frequency.  You then need to change that setting to optimize for normal audio.

Good luck!
73
Evan
AC9TU


Re: Last effort before it is scrapped.....

Gordon Gibby
 

Add .001 Uf capacitor from the Mike lead to ground?

Great chance for learning, frustrating as all get out .....been there myself many times... I have an older ICOM radio with the same problem. About to tear into it this week.  


On Jul 4, 2020, at 09:13, Gordon Gibby <docvacuumtubes@...> wrote:

Maybe radio frequency interference?  try the ferrites, check it out lower power to rule it out?


On Jul 4, 2020, at 09:12, McRuss via groups.io <wtrrtw@...> wrote:

OK, I'm frustrated with the V6.  I'm not very technical but I've followed along for a while.  My issue NOW is that I can't get the audio 'clean.'  I've done the BFO tune twice and on 20m it was fair.  But I had a problem with the TX sticking (stock kit mike).  I switched my antenna to 40 and now I don't seem to have the TX problem but I can not get a clean audio (voice) signal.  Reminds me of the old CB days where we used a 'clarifier' to tune the SSB rigs.  Except I can't tune this thing!
--
Russ
K5FJR


Re: Last effort before it is scrapped.....

Gordon Gibby
 

Maybe radio frequency interference?  try the ferrites, check it out lower power to rule it out?


On Jul 4, 2020, at 09:12, McRuss via groups.io <wtrrtw@...> wrote:

OK, I'm frustrated with the V6.  I'm not very technical but I've followed along for a while.  My issue NOW is that I can't get the audio 'clean.'  I've done the BFO tune twice and on 20m it was fair.  But I had a problem with the TX sticking (stock kit mike).  I switched my antenna to 40 and now I don't seem to have the TX problem but I can not get a clean audio (voice) signal.  Reminds me of the old CB days where we used a 'clarifier' to tune the SSB rigs.  Except I can't tune this thing!
--
Russ
K5FJR


Last effort before it is scrapped.....

McRuss
 

OK, I'm frustrated with the V6.  I'm not very technical but I've followed along for a while.  My issue NOW is that I can't get the audio 'clean.'  I've done the BFO tune twice and on 20m it was fair.  But I had a problem with the TX sticking (stock kit mike).  I switched my antenna to 40 and now I don't seem to have the TX problem but I can not get a clean audio (voice) signal.  Reminds me of the old CB days where we used a 'clarifier' to tune the SSB rigs.  Except I can't tune this thing!
--
Russ
K5FJR


Re: UBITX use with 144 MHz transverter

Gordon Gibby
 

Don’t give up! It’s a hobby! Intended for learning.   Plenty of books and monographs out there to teach.  The development environment is free

Probably requires only editing one or two lines of code.  Might take five minutes, might take five hours, but you will learn from doing it. 

Gordon 


On Jul 4, 2020, at 08:13, Michel Dupuy <82f1gtx@...> wrote:

Yes but I am not knowledgeable enough to modify the code of KD8CEC version 1.2. I would like if it is possible that when I am on 28MHz the display shows 144MHz. It's just for fun, the transverter works very well, it's a UT5JCW assembly. Thank you.


Re: UBITX use with 144 MHz transverter

Michel Dupuy
 

Yes but I am not knowledgeable enough to modify the code of KD8CEC version 1.2. I would like if it is possible that when I am on 28MHz the display shows 144MHz. It's just for fun, the transverter works very well, it's a UT5JCW assembly. Thank you.


Re: UBITX use with 144 MHz transverter

Gordon Gibby
 

Yes, a simple bit of recoding will accomplish what you wish.   Give it a whirl!!!
Gordon


On Sat, Jul 4, 2020 at 4:55 AM Michel Dupuy <82f1gtx@...> wrote:
Hello, is it possible when I use the uBITX with a 28/144 Mhz transverter to display instead of 28.300 the frequency of 144.300 for example. Thank you for my question which may be impossible. Thank you so much.


UBITX use with 144 MHz transverter

Michel Dupuy
 

Hello, is it possible when I use the uBITX with a 28/144 Mhz transverter to display instead of 28.300 the frequency of 144.300 for example. Thank you for my question which may be impossible. Thank you so much.