[Amps] Circuit Board Question

[Matt]

Could someone help me out with some advice.

 

How much separation between circuit board traces in an antenna switch box
would be recommended to reliably handle the voltage associated with legal
limit at 2:1 SWR?

Just tinned or conformal coating?

How wide would you recommend the trace to handle the same signal using 3oz
board stock - longest trace is about 2", most less than 1"?

 

Thanks in advance

Matt

KM5VI