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Hi Art,

They are just wire designators. The other end is on K3. During transmission, it disconnects the audio preamp from the audio amp.



73
Evan
AC9TU

On Fri, Mar 22, 2024 at 10:13 PM, Robert AG6LK wrote:

Gyula, Rafael,

Thank you for taking the time to answer my question about GridTracker. I truly appreciate it.

Thank You. 73,

Robert, AG6LK

I just realized that I sent the wrong link to GT. I apologize - been working extra hours at my job the past couple weeks and it was stressful.

Here is the proper link to GridTracker???

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Hi Andi,

The Scale=value for 20 meters is set for 0.005.? Try increasing it to 0.006 and restarting the sbitx program.? You can edit it with vi or nano.

Each band has its own scale factor.? You can tweak these to get values that are more to your liking.? Be careful not to go too high: 25 watts for bands less than 20 meters, 20 watts up to 15, 15 watts for 15 meters, and 10 watts for 10.

Make minor adjustments; the drive is maxed out if you find little or no change.

73
Evan
AC9TU

I received my sBitx v3 last week and liking it a lot so far.

I have a related question, so I just add it here

The values in my unit are:

80m: 16W

40m: 24W

30m: 17W

20m: 13W

17m: 19W

15m: 15W

12m: 9W

10m: 8W

Actually, I find these quite OK for IRF510s at 13.8V. My only question is - why is the 20m value so low? It should easily be around 20W like on 30 or 17m.

Attached the hw_settings file!

Thanks and vy 73 Andi, OE4DNS

On Sat, Mar 23, 2024 at 03:37 AM, HA3HZ wrote:

Very good... works correctly! Thanks to both of you.
Now I'm only interested in the fact that there is a built-in RTC and it is not visible with the timedatectl command.
--
Gyula HA3HZ

Hi Gyula.

All the credit goes to Jerry for this one. I did not get to the point of identifying the issue, however he did and kindly shared it with us.

Now I can focus on other improvements and updates to the toolbox :)




-JJ

sBitx v 3.02 and FT8 mode?

It might be easier to tap into the 12-volt transmit level on Q9.? ?I assume the transistor TR1 can take 12 volts through the 2.2k resistor without issue.

73
Evan
AC9TU

Hi Evan,

Thanks for the explanation. I tried to do calibration again and this time I tried to keep the plateau slightly closer to 3000Hz. now no LSB is leaking. This was the issue.
Now waiting for on-air report. I heard on a local WEBSDR and it was nice to hear my own transmission.

73
Ashok
VU3KFK

I meant how to add to the code to sbitx control the amplifier via USB RTS

----------------------------------------------------------------------------------------------------------------

#include <stdio.h>
#include <termios.h>
#include <sys/ioctl.h>
#include <fcntl.h>

int PTTport,level = 0;


// set RTS level, return -1 if error
// termios.h
int set_RTS(int level, int *fd)
{
	int serline;
    ioctl (*fd, TIOCMGET, &serline);
	if (level == 1) 
	{ 
 	  serline |= TIOCM_RTS;
	  return ioctl (*fd, TIOCMSET, &serline);
	}
	if (level == 0) 
	{ 
 	  serline &= ~TIOCM_RTS;
	  return ioctl (*fd, TIOCMSET, &serline);
	}
	return -1;
}

int openserial(char *serial)
{
 PTTport = open(serial, O_RDWR | O_NOCTTY | O_NONBLOCK | O_NDELAY);
 if (PTTport <0) 
	{
	 perror(serial); 
     printf("error open device [%s]\n\n",serial);
	 return -1;	
	}
  return 1;
}


int main(int argc, char *argv[])
{
		if (argc == 1)
	{
		printf("\nuse like ttyptt /dev/ttyPTT X (X=0 - set PTT-RTS off, X=1 - PTT-RTS ON)\n\n");
		return(0);
	} 

	if (openserial(argv[1]) < 1) return -1;		 

	if (*argv[2]=='1') level=1;
				  else level=0;
	set_RTS(level,&PTTport);

	return (0);
}

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Could you not simply use a USB-to-9pin serial adapter/cable??????

Something like:

?- de AI4AI

--
Jack, W8TEE

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The log file is in database format (sbitx.db) in the /sbitx/data folder. The LOG program of v3.02 is able to save data from the LOG database in adif format by setting it from date to date. This adif format can be uploaded to any server or other log program.
--
Gyula HA3HZ

Yvonne,
which hardware version are you using? I use v2 with the original FET output stage (IRFZ24N) from 12.5V and my current limit is 6.00A.
--
Gyula HA3HZ

Very good... works correctly! Thanks to both of you.
Now I'm only interested in the fact that there is a built-in RTC and it is not visible with the timedatectl command.
--
Gyula HA3HZ

On Fri, Mar 22, 2024 at 01:06 PM, JerryP wrote:

in sbitx_gtk,c is the function,

?

time_t time_sbitx(){

????? if (time_delta)
????? ? ?? return ?(millis()/1000l) + time_delta;
?????? else
??????????? return time(NULL);
}

?

If you just return(NULL);? instead of return (millis()/1000l) + time_delta; the problem should go away. I don't know why time_delta is used if there's a RTC and the RTC is synced with internet time servers.?

--

?

Jerry, AC9NM

手中的鸟在灌木丛中值两个

--
Jerry Ponko, AC9NM

Hi Jerry.

You are a genius! This was the fix or Band-Aid for the time dilemma. We are pulling time from NTPsec more efficiently using the system method so I believe there is no use for this part of code. I changed my file to this and it works every time regardless of the call/grid field. I can't express how grateful I am for your assistance!



I also updated my repo with the change. Those running my build can do this to update your version with the fix.


pi@sbitx:~/sbitx $ git reset --hard
-JJ