In my case I use the following for 144mhz & 432mhz, but because I run higher than 25 watts, I have the 160 watt units. 25 watt units are available. I use a Advanced Receiver Research mast mounted preamps at my station.

144mhz MSP144VDG-160432mhz MSP432VDG-160 Both units can be powered over coax if you order them with the optional bias choke. They are both capable of handling 160 watts and switch when they see arriving tx power. They make 25 watt units, also: msp-25 amateur

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MSP28VDG-160 amateur

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On 1,296 (23cm) I am now using a SHF MVV-1296 SP23 23cm Masthead Preamplifier which does the same as the ARR units above and comes standard with the ability to go power over coax. It can handle 100 watts. https://www.thedxshop.com/sp23-23cm-masthead-preamplifier.html

Steve NS3L