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Setting BFO

 

Hello everybody,

I build the UBITX by scratch. The second IF is 11.979300 Mhz because of the crystals in the ladder filter. In Arduino I use the kd8cec software v1.1 with nextion display. In the ubitx manager I can upload and save the lower BFO frequency, but after rebooting the BFO frequency is always at 11.997 Mhz. I've found that the lowest storable BFO frequency is 11.990 Mhz. Values below that are saved in the config but are not accepted after a restart. With the Drehcoder I can adjust the lower BFO frequency and also on the SI5351 measure but? after reboot Clk01 has always the default value from 11,997 Mhz. Do i something wrong or is it a problem of the software?

73 de Chris DF1EA!
 

Chris,

There is code in the uBitx software, both from the original and KD8CEC code.? I found the following:

//original code with modified by kd8cec
? if (usbCarrier > 12010000l || usbCarrier < 11990000l)
? ? usbCarrier = 11997000l;
?
? if (cwmCarrier > 12010000l || cwmCarrier < 11990000l)
? ? cwmCarrier = 11997000l;

My suggestion is to find these lines in the ubitx_20.ino source file and modify to allow for the range that your rig will need. (note, you will need to download the entire ubitx-1.1.zip from KD8CEC repository)? You can find a link to the files on the Hamskey.com web page.? Also on Github:??in the??(zip) folder


Hope that helps

73
Evan
AC9TU
 

Hi Evan,
thank you for the crucial hint. I found the entry in Ians Code from line 1156 and edited it. See there, all the settings that I have previously made in memory manager were taken.
Thank you very much.

73
Chris
DF1EA
 

You are welcome.

Merry Christmas and Happy New Year!

Evan
AC9TU

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