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A suggestion I had made a bit ago was to use a lead acid or AGM battery in between the AC supply and the radios.

I worked with a ham in Alaska, who manages several repeaters and remote tower sites and this is how he does it, for simplicity and reliability.

The AC is on a timer, to be able to charge the battery within a few hours.

All the radio and compute runs off fused DC taps, (and voltage converters) so that if AC dies, the DC is still there and he's got 100+ AH batteries to carry it for days. He's got a bit of compute to make an announcement / send a message if AC is lost. There's diodes on the leads to the batteries to prevent any backflow form the battery to the AC power supply.

The DC can directly power multiple radios / compute at the same time as opposed to needing multiple AC adapters.

It's also cheaper than a similarly sized UPS solution that converts the DC battery back to AC that is then converted back to DC for the radios and compute.

Just an idea to consider if we're re-jiggering the power solution for a rack of radios and compute.