[Milsurplus] OT: Coaxial Relay ratings

[W2HX]

Hello all,

I am looking to switch full legal limit coax feed to 3 antennas remotely. I am looking at some surplus coax relays to do this. One that I am looking at uses "N" connectors and the spec sheet says it is rated for "300W cw @ 3000 MHz & Sea Level).  Well, I am not too far from near sea level, but my question is, can anyone hazard a guess about how the power rating might change from 3 GHz to 30 MHz? I know that UHF/PL-259 are better connectors for higher power than "N." There is no information on power rating vs frequency on the data sheet (this is a Transco product).

thanks

73 Eugene W2HX