Why do we insist on such a large and comprehensive radar for the Hunter's with so few VLS. 6x large-aperture L-band arrays + 6x medium-aperture S-band arrays + 12+ small-aperture X-band arrays seems disproportionately excessive compared to say the JMSDF's massive forthcoming 128-cell ASEV cruisers with 4x SPY-7(V)1 arrays or the more similarly sized Constellation class frigates with only 3x SPY-6(V)3 arrays. Presuming a field of view of 120+ degrees per array, why not redesign the mast and cut back the number of arrays of each by 1/3 or even 1/2 to reduce the top weight, may even permit the S2087 to be retained on a 96 cell variant.
It is a beast of a radar.
I'm not aware of any other integrated tripple banded AESA radar on the water. Most (including the venerable spy series) run an s band single frequency ASEA/PESA panel with a more traditional single point x band fire control. Few ships have much L band capacity at all outside of basic navigation.
The advantage of the wide spectrum is that it is more effective at picking up low obervable objects (which tend to be low obervable only in limited ranges) and more resistant to jamming (it is very difficult to interfere with the frequencies across all three bands simultaneously). The system energy (which is gigantic) also enables it to burn through smaller enemy jamming systems (typically aircraft based) more easily. This means it always has eyes and is unlikely to be blinded even in the most difficult environments.
The radar package also has substantial EW capabilities of its own (i.e it can jam others), while simultaneously continuing to track. Most other ships rely on stand alone systems for this, and they can't put out the sheer energy the ceafar system can (jamming is in large part all about the energy sent out).
I should also note that a common radar concealment technique is to rapidly frequency hop, such that emmissions mimic background noise. The broader the frequency range, the better this capability.
To the point on panel numbers, AESA systems are weaker at the more oblique angles. The more panels in a 360 deg radius, the less this exposure. A four panel is more effective than a three panel, and a six even better. You fit three panels if you are cost conscious. Additionally it provides redundancy. The other panels can cover the gaps from a damaged panel more easily.
The Americans have been impressed with the capability of the ANZAC ceafar system, and the Hunter package is a level above this. There is a reason the government is prepared to build a ship around the radar system, and pay a small fortune to achieve this outcome. It is world beating.
Its limitation is top weight. It integrates a lot of the equipment into the panels rather than having a separate control box that can be placed lower in the ship. This is something that other competing systems do that is better than CEA, but recognise there are disadvantages to this, including reduced power output. Hopefully they will find a solution to this in time. It's also very electricity and cooling hungry, but this relates to its sheer power. The Hunter design also allows the radar to sit very high up, increasing its range. The Burke and Constellation radar configurations by comparison are much lower. This helps them with top weight but costs capability.
I would suggest that the Hunter radar package is an example of what is achievable if you take an uncompromised approach. It is better than any other system on the market and that includes the American spy 6 and 7s.
I am personally less concerned about the missile holdings, as the Hunter will be able to call on the weapons from other platforms, be that another ship, land battery or an aircraft. It is the quarterback.