def save(self, *args, **kwargs):
if not self.pk and self.model.polarization:<EOL><INDENT>self.polarization = self.model.polarization<EOL><DEDENT>super(Antenna, self).save(*args, **kwargs)<EOL>
1. set polarization according to AntennaModel (self.model.polarization) when creating a new antenna
2. inherit latitude and longitude from node