If you wish to replace the switch......
First you need to know what kind, Mostlikely spdt or dpdt, possibly center off
(on-off-on type, not (on)-off-(On) type) (The on in prens means momentary)
Most Electronics suppliers will have this type of switch but be careful. I have seen switches rated at "20 amps" in places like Radio Shack where .. Well, 2 amps might be closer to what I'd trust 'em at.
On the other hand the ones I got at the kind of store Joe's TV shops at or Phil's Electronics or .. Well I have a friend who is an electronics Manufacturer and he likely shops there.
They can do 20 amps all day and not sweat.
(They also cost like 20 bucks a pop).
THey have an assortment of styles and so on as well. Mine are basic toggles.
WIth a basic toggle you can get a wall plate at Lowes, Home Depot, Joe's hardware (Any hardware) et-al which is designed for an antenna connector (But does not have the connector already installed) You may need to slightly enlarge the hole (or not) and you can use it.
Home was where I park it. but alas the.
2005 Damon Intruder 377 Alas declared a total loss
after a semi "nicked" it. Still have the radios
Kenwood TS-2000, ICOM ID-5100, ID-51A+2, ID-880 REF030C most times