Question about the tuning algorithm

[davidhay45]

In the software version 3.2 in the routine sub_tune() there is a line

if(SWR<200 & SWR<swr_mem & (swr_mem-SWR)>100) return;

this appears to say that if the SWR is less than 2 and the tuning so far has reduced the SWR by more than 1 then do not try the "other side".

Could you possibly explain what this is doing?

Thanks

[Dfinitski]

Hi. It means If SWR after tuning less than 2.0 and less than previous trying(with other side C connection) and SWR less than previous trying for 1.0, this trying is successful.

[davidhay45]

Thanks for the reply.

So if the SWR was 2.9 before this tune and 1.85 afterwards then the tune would stop? Or is some other logic having an effect?

[Dfinitski]

This logic determines wich C position is better in case if both 2 tryings where not perfectly successful.

[almost-everyone]

Hi there, I'm new here and was looking at the sources but got lost looking at the tuning code in "main.h", there's a variable named "L_invert" which if I'm not wrong, controls the L/C or C/L configuration, but apparently such a variable is never toggled, even if the function "set_ind" uses it; am I missing something ?

[Dfinitski]

Hi L_invert is the cell value flag, using for inverting of L relays control in case used 2 normally closed contacts .

[almost-everyone]

Hi L_invert is the cell value flag, using for inverting of L relays control in case used 2 normally closed contacts .

Ok, see it now, thanks !!