[AMRadio] RCA Transmitter...

[W3CRR]

 "...a lot (if not all) of the 5KW rigs want 220/440 3 phase - and ...ya 
just can't "rewire" them...."

No.  But you can buy an expensive phase converter 
(http://www.phaseconverter.com/) - yet another odd acquisition that will 
demand explanation to your XYL.  ("But , honey, it'll allow me to 
install a four-ton 24 foot wide transmitter in our guest bedroom...").

73 --and good luck with that,

Craig
W3CRR