I do not see why it is either or.
Run the transmitter from another power supply and put a dummy load on the troublesome one. Get it immune to RF.
Put a crowbar inside it with very little slugging capacitance so that it is quick. A fat SCR which will blow the fuse before expiring will be needed.
Use screened cable between the power supply and the radio.
Run the transmitter from another power supply and put a dummy load on the troublesome one. Get it immune to RF.
Put a crowbar inside it with very little slugging capacitance so that it is quick. A fat SCR which will blow the fuse before expiring will be needed.
Use screened cable between the power supply and the radio.