Standard Ka-Band Circular-Polarized Rx/Tx Feed Assembly. Standard TX=29.5Ghz – 30.0Ghz RX=19.2Ghz – 20.2Ghz has been specifically designed for our line of offset reflectors. Electrically tested and matched, these feed assemblies provide maximum performance for demanding commercial applications. Standard Ka-Band components have standard WR28 and WR42 flange for Tx and Rx respectively. The dual-mode style feed horn offers enhanced performance for Circular polarized Ka-Band applications.