[Xastir] Adding station identifiers

[Nikita Bogdanov]

I have been trying to add a station identifier to my call sign (KF5EFR-0), 
however Xastir does not register it. This only happens when putting KF5EFR-0, in 
which case upon re-opening the configuration screen, the identifier disappears. 
Putting numbers other than zero however does work. Are there any ways to get 
around this?

Thanks,
Nikita