In menu: Manage Snapshots:
When daylight mode is selected and viewing a snapshot, the background of the right side of the
menu stay becomes black when it should have been white.
how to reproduce:

set "daylight" background (white)
main menu -> Configuration -> Colours/Beep -> daylight -> exit

create a snapshot
main menu -> frequency Sweep -> save snapshot -> exit

view a snapshot
main menu -> manage shapshots -> select the last snapshot -> show -> exit

Result:

the background is black on the right side of the screen, the left side background is white

Expected result: the complete background is white

Describe the bug
In function Frequency Sweep: the Graphics is not resizing / scaling when zooming in or out the frequency range after single scan.
This applies for all diagram types where the frequency is shown (= not in smith chart).

To Reproduce
Steps to reproduce the behavior:

1. attach an antenna
2. go to Frequency Sweep
3. select a frequency where the antenna is resonant to get a good dip in the VSWR graph
4. make a single scan to get a VSWR graph, note the frequency for e.g. the lowest VSWR
5. zoom in or out: by pressing the Z- or Z+ buttons
6. the shown frequency scale is changing, but the VSWR graph not, it stays the same.
   As a result the lowest VSWR dip is shown to be at another frequency than before.

Expected behavior
Expected behevior is, that the graph shrinks or enlarges with the shrinking or enlarging frequency scale.

Screenshots
If applicable, add screenshots to help explain your problem.

Version (please complete the following information):

• main Version (see upper right corner): [e.g. 1.04]
• build Version and ~ date (see lower left corner): [e.g. 3.0d 2012-07-22 6:00 UT]

Hardware (please complete the following information):

• Device: Mini1300

Additional context
Add any other context about the problem here.

Affected function:
Find frequency

Short description:
The spectrum view does not adapt to new frequency after changing the frequency

How to reproduce:
find frequency -> spectrum
-> frequency -> change to a different frequency/band -> ok

Result:
spectrum view is not updated to new frequency

Expected results:
spcetrum view adapts to the chaned frequency

Is your feature request related to a problem? Please describe.
the Audio DSP feature was implemented in CEC version 1.01A but was not taken over into later releases.

Describe the solution you'd like
It still seems to be included in the source code but is just not accessible via the main menu.
Please add a link to the Audio DSP function to the "DSP" button on the main menu column 5 row 2.
That original DSP function is anyways only used for HW calibration and is accessible via
the menu: Configuration -> DSP.

Describe alternatives you've considered

Additional context

1. the audio DSP function is here: Analyzer_EU1KY_CEC_AKF/Src/analyzer/window/audiodsp.c Line 857 void AudioDSP_Proc(void)
2. change this line:

   Analyzer_EU1KY_CEC_AKF/Src/analyzer/window/mainwnd.c

   Line 602 in 389810f

   case BTN_DSP:

   
   from:

                case BTN_DSP:
                    FFTWND_Proc();

to

                case BTN_DSP:
                    AudioDSP_Proc();

Describe the bug
When entering the S21-Gain without a prior calibration, the system halts with an error message and needs to be restarted.

To Reproduce
Steps to reproduce the behavior:

1. start with a clean SD card or make sure to delete the S21 calibration file (probably S21TX )
2. click on 'S21-Gain' menu item
3. System halts with error message: No S21TX file, System halted

Expected behavior
a warning message that the user should calibrate first and the option to exit or start calibration

Screenshots

Version (please complete the following information):

• main Version (see upper right corner): 1.04
• build Version and ~ date (see lower left corner): 3.0d 2021...

Hardware (please complete the following information):

• Device: Mini1300

Additional context
the crash is initiated here: Src/analyzer/window/trackspectr.c#L1155

if (!OSL_IsTXCorrLoaded())
    CRASH("No S21TX file");