RPK90 BOGON. Rack Mount Kit for a Double Receiver Unit Setup z@® INCLUDED REMS 1. Remove TABS on both outer sides of the RECEIVER UNITS by pushing DOWN and OUT of the Units. 2. Insert appropriate LEFT & RIGHT RPK90 RACK MOUNT EARS INSERT CENTER by pushing them UP into the SLOTS on each side of the Receiver Unit. CONNECTOR TAS (LEFT {3 and RIGHT {® designations are marked on the rear of the ears) 3. To connect two Receiver Units together, remove TABS from the inner sides of the units. 4.