The only 2 domes that would work with that system are the following. Please note that these are no longer manufactured but were very popular models, especially the 4kW version. There are a number of dealers who have these in stock that might have been removed for a retrofit or you can search the internet. Be very careful though as you need the exact part numbers (and the appropriate signal cable) that I listed. We had the same size domes that were used for the 7” vx2, but would not work with the 10.4” or black box versions.
RRSB0094-075 18 Inch Radome with 2.2kW Transceiver
RSB0071-057 24 Inch Radome with 4.0 kW Transceiver
