Motorola PTP 800 ODU Coupler
Motorola supplies coupler mounting kits for 11 GHz, 18 GHz, 23 GHz and 26 GHz bands in 3 dB and 6 dB variants. The 3 dB coupler mounting kit allows two ODUs to share the same antenna, the main purpose being to support two parallel and simultaneously transmitting links, each operating on a different frequency pair. Each coupler increases the system loss by 3 dB to each ODU. The 6dB coupler mounting kit allows two ODUs to share the same antenna. The main purpose of this coupler is to support a redundant 1+1 system. Each coupler introduces only 1 dB of additional loss to the main ODU but 7 dB of additional loss to the standby ODU. This arrangement allows the the primary link to operate with optimum link budget with the redundant link operating with reduced margin. Automatic switching in the standby configuration will be supported in a future system release. The coupler mounting kit allows two ODUs to mount directly. The coupler mounting kit provides an interface that is mechanically identical to that of a single ODU. It can therefore be mounted either to an RMK or directly to a Motorola direct mount interface antenna.
