Date   
Re: S Meter Nextion 3.2

Vic WA4THR
 

The S-meter requires an external circuit to supply the signal level information. There are several choices ranging from a simple diode detector all the way up to a more complicated second Arduino chip. Take a look at the KD8CEC website as he describes several easily wired circuits. I started with an LM386 amp and detector that connects between the volume pot and a spare Raduino input, and that worked very well. I later replaced that with the second Arduino to get some additional features.

=Vic=

Re: LM324 AGC Issue

Murray Wills (ZL2IQ)
 

Thanks Joel. I have replaced the LM324 just in case but still no luck.

Murray ZL2IQ


From: BITX20@groups.io <BITX20@groups.io> on behalf of Joel Caulkins/N6ALT via Groups.Io <caulktel@...>
Sent: Sunday, October 20, 2019 10:18:56 AM
To: BITX20@groups.io <BITX20@groups.io>
Subject: Re: [BITX20] LM324 AGC Issue
 
Hi Murry,

I built it and am currently using it without trouble. When setting it up, all voltages were able to attained without problem. Perhaps the LM324 is bad or you have it plugged in backwards.

Joel
N6ALT

Re: Gordon Gibby Digital Interface

Gordon Gibby
 

Since you aren’t getting transmit power, I would change that 47K to 4.7 K. 

The other one I would leave alone. 

If the rig goes in the transmission, and the only thing you have to do is provide enough audio to get the output that you want.  BitX’s need a bit more audio, as does the line input of icoms.   It all depends on what the transceiver requires.  

If you still don’t have enough output, change the 4.7 K in the audio path to 1K!!!




On Oct 19, 2019, at 18:48, Sascha Bohnet | DL5SMB via Groups.Io <saschabohnet@...> wrote:

[External Email]
Still fighting to get the interface working.

I did make direct solder connections to the usb sound card - but the problem was something else. I did not pick the hot end of the poti but the wiper. So the RX path is pobably okay now.
But if i try to go to TX mode, the radio switches to transmission (vox) but I do not get any output out.

Comparing Davids schematics with Gordons original circuit, I noticed a change of resistors, probably  a confusion:

R3 which connects the sound cards left left output channel to the 500 Ohm Poti before the tranformer is a 47k resistor in Davids kit,
in Gordons documentation this resistor is 4,7k oder 10k (depending on the signal level) and is referenced to as R12.

In the vox circuit of Gordons documention the signal of the right audio channel is led through a 47k resistor to the base of the transistor Q1 -
in Davis kit this is a 4,7k resistor.

I will check tomorrow if changing both resistors helps in my case. And then I will give some feedback to Rob about the C60 tapping :-)

Re: Gordon Gibby Digital Interface

Sascha Bohnet | DL5SMB
 

Still fighting to get the interface working.

I did make direct solder connections to the usb sound card - but the problem was something else. I did not pick the hot end of the poti but the wiper. So the RX path is pobably okay now.
But if i try to go to TX mode, the radio switches to transmission (vox) but I do not get any output out.

Comparing Davids schematics with Gordons original circuit, I noticed a change of resistors, probably  a confusion:

R3 which connects the sound cards left left output channel to the 500 Ohm Poti before the tranformer is a 47k resistor in Davids kit,
in Gordons documentation this resistor is 4,7k oder 10k (depending on the signal level) and is referenced to as R12.

In the vox circuit of Gordons documention the signal of the right audio channel is led through a 47k resistor to the base of the transistor Q1 -
in Davis kit this is a 4,7k resistor.

I will check tomorrow if changing both resistors helps in my case. And then I will give some feedback to Rob about the C60 tapping :-)

Re: LM324 AGC Issue

 

Hi Murry,

I built it and am currently using it without trouble. When setting it up, all voltages were able to attained without problem. Perhaps the LM324 is bad or you have it plugged in backwards.

Joel
N6ALT

Re: LM324 AGC Issue

Murray Wills (ZL2IQ)
 

Thank you Raj I will try those today


From: BITX20@groups.io <BITX20@groups.io> on behalf of Raj vu2zap via Groups.Io <rajendrakumargg@...>
Sent: Sunday, October 20, 2019 1:42:51 AM
To: BITX20@groups.io <BITX20@groups.io>
Subject: Re: [BITX20] LM324 AGC Issue
 
Check R2, probably a wrong value.

See if you have an PCB hair line short, hot the board up to a strong back light and see if you spot anything!

Raj

At 19/10/2019, you wrote:
>Hi I have built up one of the LM324 AGC kits from India and used all the usual sources for circuits and photos to make sure it is installed correctly. The instructions say that there should be 4 volts at PIN 3 on the LM324 but I only have .75 volts maximum.
>
>Has anyone else had success with this kit?
>if not is there a recommended kit
>I have replaced the LM324 and the BC547 and found no difference.
>
>Cheers
>Murray ZL2IQ




Bitx 40 For Sale

Scot McMath
 

For sale novice built Bitx 40 in AmateurRadioKits grey metal case. Amunter's 
1.28.1 firmware with 10 turn 10k pot and function button, all working. 
Baofeng speaker mic that I was unable to get wired up. I have uBitx 4 thats 
working well so I have lost interest in this one.
$100 shipped USA
Scot WB7AVU... good in QRZ.com

Re: S Meter Nextion 3.2

Herman Scheper
 

Have the same problem with S meter not working on my 5” Nextion.


Herman vanaf z'n IPad.

Op 19 okt. 2019 om 17:25 heeft Steven <wera106@...> het volgende geschreven:

Hi all,
Thanks for all the help so far. My V5 uBitX now has the cec firmware, a nice case, working cw, a Nextion 3.2, and memory manager! This rig is great fun. There are several issues to fix but I'd first like to get the S meter working on the Nextion. I have checked the box in the memory manager, but still get a flat red line and a static S meter bar. What am I missing?

  Also, any chance there is a users guide out there?

Thanks!
Steven KM4WIP

S Meter Nextion 3.2

Steven
 

Hi all,
Thanks for all the help so far. My V5 uBitX now has the cec firmware, a nice case, working cw, a Nextion 3.2, and memory manager! This rig is great fun. There are several issues to fix but I'd first like to get the S meter working on the Nextion. I have checked the box in the memory manager, but still get a flat red line and a static S meter bar. What am I missing?

  Also, any chance there is a users guide out there?

Thanks!
Steven KM4WIP

Re: sotabeams filter

Jack, W8TEE
 

I have a SOTA Beams DSP Filter unit and it works very well.

Jack, W8TEE

On Saturday, October 19, 2019, 7:23:11 AM EDT, HB9FIH <erich.rieder@...> wrote:


Hi Dave

not now finished with my uBITX but planned all the additional stuff....(for CW)

So I would build in like on schematic (I also have an AGC)

73 Erich

 


--
Jack, W8TEE

Re: LM324 AGC Issue

 

Check R2, probably a wrong value.

See if you have an PCB hair line short, hot the board up to a strong back light and see if you spot anything!

Raj

At 19/10/2019, you wrote:
Hi I have built up one of the LM324 AGC kits from India and used all the usual sources for circuits and photos to make sure it is installed correctly. The instructions say that there should be 4 volts at PIN 3 on the LM324 but I only have .75 volts maximum.

Has anyone else had success with this kit?
if not is there a recommended kit
I have replaced the LM324 and the BC547 and found no difference.

Cheers
Murray ZL2IQ

Re: sotabeams filter

Curt
 

Well his point is that its better to filter out potentially big signals sooner in the chain. Also if the filter board does not provide an amplifier,  more so.

You can always try an audio filter in a few spots,  to see what works. Since its easier at the very end, try it out.

Curt

Re: LM324 AGC Issue

MVS Sarma
 

Raj, 
It is there in files section og bitx20 groups site as pdf from vu3sua.
Regards 
Sarma vu3zmv

On Sat, 19 Oct 2019, 5:08 pm Raj vu2zap, <rajendrakumargg@...> wrote:
Could not find the circuit, could you share so we can look at it and see what may be the issue!

Raj

At 19/10/2019, you wrote:
>Hi I have built up one of the LM324 AGC kits from India and used all the usual sources for circuits and photos to make sure it is installed correctly. The instructions say that there should be 4 volts at PIN 3 on the LM324 but I only have .75 volts maximum.
>
>Has anyone else had success with this kit?
>if not is there a recommended kit
>I have replaced the LM324 and the BC547 and found no difference.
>
>Cheers
>Murray ZL2IQ




Re: LM324 AGC Issue

 

Could not find the circuit, could you share so we can look at it and see what may be the issue!

Raj

At 19/10/2019, you wrote:
Hi I have built up one of the LM324 AGC kits from India and used all the usual sources for circuits and photos to make sure it is installed correctly. The instructions say that there should be 4 volts at PIN 3 on the LM324 but I only have .75 volts maximum.

Has anyone else had success with this kit?
if not is there a recommended kit
I have replaced the LM324 and the BC547 and found no difference.

Cheers
Murray ZL2IQ

Re: sotabeams filter

HB9FIH
 

Hi Dave

not now finished with my uBITX but planned all the additional stuff....(for CW)

So I would build in like on schematic (I also have an AGC)

73 Erich

 

sotabeams filter

dgclifford@...
 

Hi men I am contemplating fitting the Sotabeams filter to my ubtix  v5, Richard Newstead the owner of Sotabeams   recommends fitting the filter "further back  down the audio chain", any one fitted one of these and if so what do you recommend .  Many thanks   Dave C

Re: uBITX Code Compilation Problem

Adrian Rees
 

Mark, Jack
Thank you for the emails. I'll try a few things this weekend and see how I get along.

Thanks again.

Adrian M1LCR

On 18/10/2019 16:34, Jack, W8TEE via Groups.Io wrote:
Mark:

It is possible to still get errors even if you have all of the proper source code files in the right project directory. My experience is that some people don't install the proper library files in the right directories or they use the "<>" and double-quoted header file directives incorrectly. Unfortunately, the actual error message displayed varies according to the exact nature of the error, so it's difficult to summarize.

While this is a simplification, it may help some understand the process. When you use a standard library function (e.g., Serial.print(), delay(), pinMode(), etc.), the source code for those functions is not in your project directory. Because the compiler doesn't see the code for these standard functions, it leaves question marks after the function name at the point where those functions' code should be placed. When the compiler is done, it automatically loads another program called a Linker. It's the Linker's responsibility to plug those holes in the program where the question marks are. If you surround the library name in double quotes:

    #include "MyLibrary.h"

the Linker looks in the current project directory for the missing library code (i.e., probably MyLibrary.cpp). If the Linker still can't find the library code, it will search the default library path (e.g., C:\Arduino1.8.10\libraries) for the missing code. If you use angle brackets on the library file:

   #include <MyLibrary.h>

the Linker only looks in the default library path. So, double-quotes searches the project directory for the missing code and, if not found, it searches the default library path. If you use angle brackets, it only searches the default library path, not the project directory.

Anyway, you need to have both your project's code and any called libraries in their expected places or you will get an error message.


Jack, W8TEE

On Friday, October 18, 2019, 10:38:51 AM EDT, Mark - N7EKU <n7eku@...> wrote:


Hi Adrian,

When you unzip the original files, there will be an .ino file named for the code version.  You need to make a folder with the exact same name (except the .ino part) and put all the files into that folder.  Then it should compile fine.  The IDE only looks for the needed files in a folder with the same name as the code.

73,


Mark.

--
Jack, W8TEE


Re: uBITX Code Compilation Problem

MVS Sarma
 

I use older version ide  1.8.5.
 it does compile without issues.
 latest versions , i have issues  with my laptop working win7 64bit.


On Sat, Oct 19, 2019 at 8:30 AM Mark - N7EKU <n7eku@...> wrote:
Yeah for sure,

However it sounds like he is just trying to compile the orginal code, so all that is required should be in Farhan's zipped package on github.  Also, the error message is the exact same that I got when I didn't have these files placed correctly.

73,


Mark.

Re: Using FT8 with Bitx40 (and microphonic problem). #bitx40 #ft8

Werner de Vos
 

JS8CALL will do the job.

LM324 AGC Issue

Murray Wills (ZL2IQ)
 

Hi I have built up one of the LM324 AGC kits from India and used all the usual sources for circuits and photos to make sure it is installed correctly. The instructions say that there should be 4 volts at PIN 3 on the LM324 but I only have .75 volts maximum.

Has anyone else had success with this kit?
if not is there a recommended kit
I have replaced the LM324 and the BC547 and found no difference.

Cheers
Murray ZL2IQ