[amsat-bb] AO-51 S-Band antenna polarization

Does anyone know the polarization of the 2.4 GHz transmissions from AO-51. Are they circular? If so which polarity, RHCP or LHCP? Are they linear? If so is there a preferred receiving polarization? I have examined the AMSAT web site and many references on the Internet, but cannot seem to find the answer.

Thanks,

John WA4WDL AMSAT member 10211