[Boatanchors] Tube radio and power outages

[theron]

 Hello,

 Just wanted to get an overall opinion of the best way to protect my tube
radio gear from power flickers and outages. We have power outages several
times a year during the winter months, and I was concerned that this may
cause damage to my tube radio gear (Johnson Ranger II & Hammarlund HQ-150).
Usually before the power goes out it will cycle on and off for an hour or
so, and it seems that this rapid on and off would not be good for the radio
gear.

Thanks es 73 W7DTG Don