FMP24 frequency offset

[Ham_France]

Hello,
On top of FMP24 is the frequency like 438.500-2844 Hz. So FMP24 seems to explore frequencies near the tuned frequency, like an AFC. It can go 2844 here or 4000 Hz from tuned frequency. Is it usefull and is it possible to stop this fonctionality, by command line if the signal is exactly at good frequency ?

Cheers

 

[Ham_France]

I reply to myself, it is -a0 in the manual.
Sorry

 

[dave3825]

That means it is not dead on the freq. Adjust your ppm either plus or minus until you achieve the lowest possible value. Or click on Fmp24 window and hit a for A toggle auto center tuning

Or add this to your start up

-a<num> Enable/disable auto center tuning (0-1) [-a1]

 

[Ham_France]

Thanks for your reply.
Yes, it is on frequency, but when there was no signal, FMP24 was shifting frequency around tuned frequency to find signal.
It is ok with -a0