[wa2ise]

I have a number of Australian and New Zealand radios, all operate on 230VAC. You can always use a step up transformer, but I have access to 240V@60Hz (American houses are usually fed a pair of 120VAC lines, basically 240VAC with a grounded centertap). Your radio's power transformer will be quite happy with 60Hz.

[Image: http://www.wa2ise.com/radios/240vout.jpg]

If you have an outlet that looks like this above (240V@15A) you could plug your radio into it via an adapter extension cord (the female end connector that would match the radio's power plug).
[Image: http://www.wa2ise.com/radios/eupwr.jpg]

Oddly enough, America once used the Aussie pattern power outlet, which I used to provide power to my Aussie radios. It has the UL stamp of approval.

[Image: http://www.wa2ise.com/radios/americanaussieoutlet.jpg]

If you own your house, you could install a new 240V@15A circuit and place the outlet near where you want the radio to be presented. Don't use the clothes dryer or electric stove outlets, those would provide way too much current if the radio develops a short.